Papers - OHE Kaoru
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Adsorption Equilibrium of Selenium Oxyanions Using FeY Mixed Oxides Reviewed
Ohe Kaoru, Wakamatsu Amu, Oshima Tatsuya
人工生命とロボットに関する国際会議予稿集 30 645 - 648 2025.2
Authorship：Lead author Language：English Publishing type：Research paper (scientific journal) Publisher：株式会社ALife Robotics
Selenium oxyanions (Se(IV) and Se(VI)) in wastewater are of concern as serious pollutants due to their easy bioaccumulation and toxicity to living organisms. In this study, mixed oxides with various Y/Fe molar composition ratios (x=0.5, 1, 2) were investigated in the adsorption properties of selenium oxyanions, and were studied their adsorption mechanism. The experimental data best fits the Langmuir adsorption model, which is characteristic of monolayer adsorption (r2 >0.991). The maximum adsorption capacity (qmax) of Se(IV) and Se(VI) increased in the order of FeY2 > FeY1 > FeY0.5 and of Fe2 > FeY1, respectively. It was suggested that FeY2 adsorbed Se(IV) by formation of inner-sphere complexes and outer-sphere complexes, and adsorbed Se(VI) by outer-sphere complexes.
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Oshima T., Kadogawa Y., Shiraishi K., Ohe K., Nishihama S., Yoshizuka K.
Solvent Extraction and Ion Exchange 43 ( 1 ) 79 - 93 2024.12
Language：English Publishing type：Research paper (scientific journal) Publisher：Solvent Extraction and Ion Exchange
Lithium is essential for the production of lithium-ion batteries, and the demand is expected to further increase. λ-MnO2 adsorbent exhibits superior selectivity of Li(I) adsorption against other alkali and alkali earth ions. In this study, the Li(I) adsorption on λ-MnO2 adsorbent granulated with alumina binder in batch and column operations, in particular, effect of acid treatment on the adsorbent was investigated. From the analysis of the adsorption isotherm by Langmuir’s model, and the maximum adsorption was calculated to be 1.64 mmol/g. The granulated adsorbent before and after excessive acid treatment was analyzed by XPS. Based on the change at the narrow spectrum attributed to the 2p orbital, decrease of Mn(II) due to the dissolution of adsorption body was suggested. The adsorption and desorption kinetics of Li(I) on the sieved granulated adsorbents were compared. The kinetics of both adsorption and desorption were explained by intraparticle diffusion equations, and the adsorbent with smaller particle size showed faster adsorption. As the rate of disproportionation reaction for the adsorbent resulting in the elution of small amount of manganese is competitive with desorption rate of Li(I) based on ion exchange, kinetic control of manganese elution in the desorption process seems to be difficult. These results should be informative for the operation of Li(I) recovery using the granulated λ-MnO2 adsorbent.
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Ohe Kaoru, Tabuchi Ryosuke, Oshima Tatsuya
Journal of Robotics, Networking and Artificial Life 10 ( 4 ) 294 - 298 2024.9
Authorship：Lead author, Corresponding author Language：English Publishing type：Research paper (scientific journal) Publisher：ALife Robotics Corporation Ltd.
Development of adsorbents for selenium and arsenic, which are particularly toxic, is urgently needed. arsenic was prepared for adsorption and removal. The experimental data of adsorption isotherms of As and Se oxyanions by NiZn adsorbents were well fitted to the Langmuir adsorption model, which is characteristic of monolayer adsorption, with a coefficient of determination of R2>0.94. The maximum adsorption (qmax) of Se(IV) by NiZn-Cl and NiZn-NO3 was similar to that of NiZn-AcO, and no difference in adsorption due to interlayer ions was indicated. On the other hand, NiZn-Cl had the highest qmax for Se(VI) and As(V). qmax for As(V) by NiZn-Cl was about twice that of NiZn-AcO, As(V) and Se(VI) adsorption performance was greatly improved.
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OSHIMA Tatsuya, HASHIZUME Mai, MATSUO Naoki, KAWAGUCHI Yuki, OHE Kaoru, INADA Asuka
Solvent Extraction Research and Development, Japan 31 ( 2 ) 41 - 48 2024.4
Language：English Publishing type：Research paper (scientific journal) Publisher：Japan Association of Solvent Extraction
To date, suitable organic solvents for the extraction of tetravalent selenium (Se(IV)) in highly concentrated hydrochloric acid have not been clarified systematically. In this study, the extraction of Se(IV) using various organic solvents was compared. Se(IV) was extracted from 8.0 mol/dm<sup>3</sup> hydrochloric acid using various ketones. Se(IV) extraction using ethers was lower, while that using hydrocarbons was negligible. The correlation between the extraction and log<i>P</i> value of solvents was small, however, the extraction using a hydrophobic dicyclohexyl ketone was lower. The extractability of Se(IV) by most solvents can be classified with the Hansen solubility parameters of the solvents. However, Se(IV) extracted by 2-nonanone was not stripped by contact with fresh aqueous solutions containing HCl, HNO<sub>3</sub>, NaOH, or EDTA.
DOI： 10.15261/serdj.31.41
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ヒ素吸着除去のためのY(III)添加マグネタイトの開発と吸着機構の解析 Reviewed
大榮 薫、若松あむ、大島 達也
化学工学論文集 45 ( 5 ) 168 - 176 2019.9
Language：Japanese Publishing type：Research paper (scientific journal)
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Ichikawa Daiki, Shiomori Koichiro, Ohe Kaoru
Studies in Science and Technology 8 ( 1 ) 23 - 29 2019.8
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Union Press
Polyacrylamide(PAA) cryogels containing iron hydroxide oxide(FeOOH) nanoparticles were prepared and used for the fixed bed continuous adsorption of As(V) from water. The effect of inlet As(V) concentration and feed flow rate on the breakthrough characteristics of the fixed bed continuous adsorption were investigated. The cryogels have a large number of pores with µm order and FeOOH nanoparticles are observed on the surface and inside of the wall of the cryogels. Hence it was found that As element was observed and overlapped with Fe element by EDX mapping analysis, As(V) was adsorbed on FeOOH from aqueous phase. The breakthrough curves of the fixed bed adsorption were analyzed using the well-established column models which are Yoon-Nelson and Thomas models. The calculated results were well fitted with both models at high inlet concentrations and slow feed rate rather than that at low one and fast one. The maximum adsorption amount of As(V) on the FeOOH particles in the cryogels, which was obtained from the fixed bed adsorption at the inlet concentration of As(V), showed Langmuir type adsorption isotherm. The FeOOH particles prepared and the FeOOH particles entrapped in PAA cryogels were determined to be α-FeOOH by FT-IR spectrum. The XPS analysis of FeOOH-PAA cryogel after adsorption of As(V) detected As-3d peak and the shape change of O-1s peak.
DOI： 10.11425/sst.8.23
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Ni-Zn層状塩基性塩による水溶液からのAs(III)およびAs(V)の吸着除去 Reviewed
大榮 薫、田渕亮丞、大島 達也、原孝佳、島津省吾
化学工学論文集 45 ( 2 ) 80 - 85 2019.3
Language：Japanese Publishing type：Research paper (scientific journal)
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Automated Classification of High-Grade Dried Shiitake Mushrooms Using Machine Learning Reviewed
Kimura Leona, Hamasuna Ota, Ohe Kaoru, Ikeda Satoshi, Aoki Kenji, Takei Amane, Kudo Akihiro, Sugimoto Kazuhide, Sakamoto Makoto
人工生命とロボットに関する国際会議予稿集 30 613 - 617 2025.2
Language：English Publishing type：Research paper (scientific journal) Publisher：株式会社ALife Robotics
This study aims to automate shiitake mushroom sorting using an anomaly detection system with Autoencoders (AE) trained on acceptable product data. Initial experiments using CNN approaches highlighted challenges in achieving high accuracy for acceptable product classification, necessitating improvement. The AE-based approach showed progress in detecting defective products via data cleansing, augmentation, and training optimization. However, misclassification of acceptable products with features like darker areas or complex textures remains an issue. This presentation outlines current findings and strategies, including data expansion and model improvements, to address these challenges.
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Simplification of Rip Current Detection by Image Averaging Based on the Number of Wave Breaks Reviewed
Hamasuna Ota, Kimura Leona, Ikeda Satoshi, Ohe Kaoru, Aoki Kenji, Takei Amane, Kudo Akihiro, Sakamoto Makoto
人工生命とロボットに関する国際会議予稿集 30 609 - 612 2025.2
Language：English Publishing type：Research paper (scientific journal) Publisher：株式会社ALife Robotics
According to a National Police Agency report, there were 1,392 water accidents in 2023, with 368 victims (dead or missing) in the sea, mainly due to rip currents. Detecting rip currents is crucial, and past studies have used image averaging, often relying on fixed-point cameras or lengthy videos, making it difficult for individuals to apply. This study proposes using smartphone videos, with durations adjusted by the number of wave breaks, to enable easier rip current detection. To test this, smartphone footage was recorded at Hitotsuba Surf Point in Miyazaki Prefecture for analysis.
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Development of a Shrine Festival Support Application with Non-Technical Management Features: Functional Evaluation and Sustainability for Future Generations Reviewed
Ide Masatomo, Beppu Masatoshi, Ikeda Satoshi, Ohe Kaoru, Aoki Kenji, Takei Amane, Kudo Akihiro, Sakamoto Makoto
人工生命とロボットに関する国際会議予稿集 30 628 - 631 2025.2
Language：English Publishing type：Research paper (scientific journal) Publisher：株式会社ALife Robotics
This study developed a web application and video content to help raise awareness and interest in the myths surrounding the local shrine, Yakudo Shrine, and the annual festival, Chibikko Sumo Tournament, as well as to help participants establish memories of the event, and evaluate its usefulness. The application is designed to be used not only this year but also over the long term, and incorporates features that will allow easy maintenance and updating by non-technical personnel and the next generation of management members. The main functions are as follows: (1) accurate and convenient provision of detailed event information, (2) AR photo function utilizing original character illustrations to capture memorable photos, and (3) administrator-only functions to update and edit necessary information. web application can be used from publication to The web application delivered accurate and detailed information to a large number of people from the day of the festival to the day of the festival, helping to increase the number of festival participants by 2.5 times compared to the previous year. The video content, in particular, increased awareness of and interest in shrine-related myths.
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Development of a plant growing experience application for physically challenged children using VR Reviewed
Beppu Masatoshi, Ide Masatomo, Ohe Kaoru, Ikeda Satoshi, Aoki Kenji, Takei Amane, Kudo Akihiro, Sakamoto Makoto
人工生命とロボットに関する国際会議予稿集 30 618 - 622 2025.2
Language：English Publishing type：Research paper (scientific journal) Publisher：株式会社ALife Robotics
In 2016, the "first year of VR," many VR platforms emerged, making VR technology more accessible. Currently, technology is expected to be applied and utilized in various fields. Application to the education sector is being promoted as part of the educational use of ICT. However, it is difficult to get the benefits of implementing VR due to lack of technology and equipment for teachers. Therefore, it is necessary to limit the scope of coverage. This research will focus on limb-challenged children and develop a VR application that allows them to experience plant growing. We believe that this will solve the problems that have been a concern for children with physical disabilities, such as the inability to perform exercises using soil and the lack of opportunities for trial-and-error. In this study, we also asked men and women in their teens to 40s to experience the apps we developed and obtained their evaluations through questionnaires. Within the survey, we received certain evaluations in areas such as trial and error. As for future issues, the application will be improved based on the feedback received from the survey. In addition, we believe it is necessary to evaluate the long-term effects of the application by having children with physical disabilities use it.
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Depiction of 3DCG Hula Dancers for Hula Costume Design CAD Development Reviewed
Kimura L., Beppu M., Ikeda S., Ohe K., Sakamoto M.
Lecture Notes in Electrical Engineering 1321 LNEE 233 - 242 2025.2
Language：English Publishing type：Research paper (international conference proceedings) Publisher：Lecture Notes in Electrical Engineering
Hula costumes are often handmade and expensive, so this study aims to develop a computer-aided design (CAD) system using 3DCG to visualize the final costume. The tool includes four functions: 1) generating a 3DCG body model based on 11 body measurements, 2) intuitively changing paw skirt (hereinafter referred to as skirt) colors, 3) changing skirt patterns with a button click, and 4) recommending and simulating skirt lengths based on body measurements. This helps users find their preferred skirt. Additionally, it allows selecting the color and pattern of practice T-shirts and the background.
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Ohe K., Furukawa M., Oshima T.
Lecture Notes in Electrical Engineering 1321 LNEE 34 - 43 2025.2
Authorship：Lead author Language：English Publishing type：Research paper (international conference proceedings) Publisher：Lecture Notes in Electrical Engineering
Arsenic and selenium are toxic semimetals, and removal of these semimetals from environmental water is a global problem to be solved. This study modified chitosan nanofiber using xylose (XY), which has multiple hydroxyl groups with high affinity to semimetals as ligands to enhance semimetals adsorption. Adsorption properties of semimetals by cross-linked chitosan nanofiber derivative (CNF-XY) were compared with cross-linked chitosan nanofiber (CNF) and commercially synthesized and commercially available N-methylglucamine-type chelating resins (CRB05, GRY-HW). Se(IV) and Se(VI) adsorption by CNF-XY and CNF was 2.8 to 8.8 times faster than that by commercial resins, and the maximum adsorption capacity was 2.3 to 10 times larger than that by commercial resins. The adsorption kinetics of arsenic and selenium were analyzed using pseudo-first-order, pseudo-second-order, and Weber-Morris intraparticle diffusion models. The adsorption of As(III) and As(V) by CNF-XY was faster than those by commercial resins. The adsorption of As(III) and As(V) by CNF-XY fit the pseudo-second-order kinetic model but did not pass the origin, suggesting that intraparticle diffusion is responsible for As(III), As(V) adsorption was not the only rate-limiting step controlling As(III), As(V) adsorption, indicating some control by boundary membrane diffusion, suggesting that multiple processes were affected by adsorption. Se(IV) and Se(VI) adsorption onto CNF-XY and CNF are predominant by the pseudo-first-order adsorption mechanism.
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A Study on Improvement of Operation Accuracy by Viewpoint Switching in VR Reviewed
Beppu M., Kimura L., Ohe K., Ikeda S., Sakamoto M.
Lecture Notes in Electrical Engineering 1321 LNEE 243 - 253 2025.2
Language：English Publishing type：Research paper (scientific journal) Publisher：Lecture Notes in Electrical Engineering
In recent years, VR technology is expected to be utilized in various situations such as disaster relief. Drones operated from a VR perspective are expected to play an active role in disaster relief and disaster damage assessment. However, among them, there are only a few examples of studies that focused on the user’s viewpoint during the VR experience and studied the effects of the change in viewpoint. Therefore, in this study we focus on the user’s viewpoint during the VR experience. Three VR games with the same content but different viewpoints (first-person, third person, and viewpoint switching) were created, and the effects of the different viewpoints on the VR experience were examined by comparing their completion times and responses to a questionnaire after the VR experience.
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Simplification of Rip Current Detection by Image Averaging Based on the Number of Wave Breaks Reviewed
Hamasuna O., Kimura L., Ikeda S., Ohe K., Aoki K., Takei A., Kudo A., Sakamoto M.
Proceedings of The 2025 International Conference on Artificial Life and Robotics (ICAROB2025), J:COM HorutoHall, Oita, Japan. 609 - 612 2025.2
Language：English Publishing type：Research paper (international conference proceedings) Publisher：Proceedings of International Conference on Artificial Life and Robotics
According to a National Police Agency report, there were 1,392 water accidents in 2023, with 368 victims (dead or missing) in the sea, mainly due to rip currents. Detecting rip currents is crucial, and past studies have used image averaging, often relying on fixed-point cameras or lengthy videos, making it difficult for individuals to apply. This study proposes using smartphone videos, with durations adjusted by the number of wave breaks, to enable easier rip current detection. To test this, smartphone footage was recorded at Hitotsuba Surf Point in Miyazaki Prefecture for analysis.
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Ide M., Beppu M., Ikeda S., Ohe K., Aoki K., Takei A., Kudo A., Sakamoto M.
Proceeding of The 2025 International Conference on Artificial Life and Robotics (ICAROB2025), J:COM HorutoHall, Oita, Japan 628 - 631 2025.2
Language：English Publishing type：Research paper (scientific journal) Publisher：Proceedings of International Conference on Artificial Life and Robotics
This study developed a web application and video content to help raise awareness and interest in the myths surrounding the local shrine, Yakudo Shrine, and the annual festival, Chibikko Sumo Tournament, as well as to help participants establish memories of the event, and evaluate its usefulness. The application is designed to be used not only this year but also over the long term, and incorporates features that will allow easy maintenance and updating by non-technical personnel and the next generation of management members. The main functions are as follows: (1) accurate and convenient provision of detailed event information, (2) AR photo function utilizing original character illustrations to capture memorable photos, and (3) administrator-only functions to update and edit necessary information. web application can be used from publication to The web application delivered accurate and detailed information to a large number of people from the day of the festival to the day of the festival, helping to increase the number of festival participants by 2.5 times compared to the previous year. The video content, in particular, increased awareness of and interest in shrine-related myths.
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Development of a plant growing experience application for physically challenged children using VR Reviewed
Beppu M., Ide M., Ohe K., Ikeda S., Aoki K., Takei A., Kudo A., Sakamoto M.
Proceeding of The 2025 International Conference on Artificial Life and Robotics (ICAROB2025), J:COM HorutoHall, Oita, Japan 618 - 622 2025.2
Language：English Publishing type：Research paper (scientific journal) Publisher：Proceedings of International Conference on Artificial Life and Robotics
In 2016, the “first year of VR,” many VR platforms emerged, making VR technology more accessible. Currently, technology is expected to be applied and utilized in various fields. Application to the education sector is being promoted as part of the educational use of ICT. However, it is difficult to get the benefits of implementing VR due to lack of technology and equipment for teachers. Therefore, it is necessary to limit the scope of coverage. This research will focus on limb-challenged children and develop a VR application that allows them to experience plant growing. We believe that this will solve the problems that have been a concern for children with physical disabilities, such as the inability to perform exercises using soil and the lack of opportunities for trial-and-error. In this study, we also asked men and women in their teens to 40s to experience the apps we developed and obtained their evaluations through questionnaires. Within the survey, we received certain evaluations in areas such as trial and error. As for future issues, the application will be improved based on the feedback received from the survey. In addition, we believe it is necessary to evaluate the long-term effects of the application by having children with physical disabilities use it.
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Automated Classification of High-Grade Dried Shiitake Mushrooms Using Machine Learning Reviewed
Kimura L., Hamasuna O., Ohe K., Ikeda S., Aoki K., Takei A., Kudo A., Sugimoto K., Sakamoto M.
Proceeding of The 2025 International Conference on Artificial Life and Robotics (ICAROB2025), J:COM HorutoHall, Oita, Japan 613 - 617 2025.2
Language：English Publishing type：Research paper (international conference proceedings) Publisher：Proceedings of International Conference on Artificial Life and Robotics
This study aims to automate shiitake mushroom sorting using an anomaly detection system with Autoencoders (AE) trained on acceptable product data. Initial experiments using CNN approaches highlighted challenges in achieving high accuracy for acceptable product classification, necessitating improvement. The AE-based approach showed progress in detecting defective products via data cleansing, augmentation, and training optimization. However, misclassification of acceptable products with features like darker areas or complex textures remains an issue. This presentation outlines current findings and strategies, including data expansion and model improvements, to address these challenges.
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Adsorption Equilibrium of Selenium Oxyanions Using FeY Mixed Oxides Reviewed
Ohe K., Wakamatsu A., Oshima T.
Proceeding of The 2025 International Conference on Artificial Life and Robotics (ICAROB2025), J:COM HorutoHall, Oita, Japan 645 - 648 2025.2
Authorship：Lead author Language：English Publishing type：Research paper (international conference proceedings) Publisher：Proceedings of International Conference on Artificial Life and Robotics
Selenium oxyanions (Se(IV) and Se(VI)) in wastewater are of concern as serious pollutants due to their easy bioaccumulation and toxicity to living organisms. In this study, mixed oxides with various Y/Fe molar composition ratios (x=0.5, 1, 2) were investigated in the adsorption properties of selenium oxyanions, and were studied their adsorption mechanism. The experimental data best fits the Langmuir adsorption model, which is characteristic of monolayer adsorption (r2 >0.991). The maximum adsorption capacity (qmax) of Se(IV) and Se(VI) increased in the order of FeY2 > FeY1 > FeY0.5 and of Fe2 > FeY1, respectively. It was suggested that FeY2 adsorbed Se(IV) by formation of inner-sphere complexes and outer-sphere complexes, and adsorbed Se(VI) by outer-sphere complexes.
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Automatic Selection of High-Quality Dried Shiitake Mushrooms using Machine Learning Reviewed
Ohe Kaoru, Hamasuna Ota, Takemura Kakeru, Hasebe Kodai, Hamakawa Fumito, Biki Bidesh Biswas, Ikeda Satoshi, Takei Amane, Sakamoto Makoto, Sugimoto Kazuhide
Journal of Robotics, Networking and Artificial Life 10 ( 3 ) 257 - 260 2024.9
Authorship：Lead author Language：English Publishing type：Research paper (scientific journal) Publisher：ALife Robotics Corporation Ltd.
Miyazaki Prefecture is blessed with a rich natural environment, where many mushrooms have grown wild since ancient times, and the production of dried shiitake mushrooms ranks second in Japan after Oita Prefecture. Our partner, Sugimoto Co., Ltd., is a long-established company founded in 1970, and sometimes it is necessary to sort over 1 ton. Sorting is still done manually, making it very difficult for employees to sort. The purpose of this study is to determine the quality of shiitake mushrooms using deep learning and video image processing.
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CAD Development of Moving Hula Costumes Reviewed
Ikeda Satoshi, Kamasaka Taketo, Ohe Kaoru, Sakamoto Makoto, Takei Amane, Yokomichi Masahiro, Aoki Kenji, Ito Tsutomu, Ito Takao
Journal of Robotics, Networking and Artificial Life 10 ( 4 ) 308 - 312 2024.9
Language：English Publishing type：Research paper (scientific journal) Publisher：ALife Robotics Corporation Ltd.
In recent years, three-dimensional computer graphics (3DCG) technology has been applied in various fields. One problem with this technique is the problem of contact between clothing and other objects (such as the body). In this paper, we verified simple animations concerning of hula costumes using three calculation methods, and found that we were able to create simple and stable animations using the FB Euler method. This paper reports that we were able to create a simple animation.
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Basic Research on Virtual Technology for Educational Support Video Production Reviewed
Satoshi Ikeda, Kodai Miyamoto, Kaoru Ohe, Makoto Samamoto, Amane Takei, Masahiro Yokomichi, Kenji Aoki, Tsutomu Ito, Takao Ito
Journal of Robotics, Networking and Artificial Life 10 ( 3 ) 270 - 274 2024.6
Language：English Publishing type：Research paper (scientific journal) Publisher：Sugisaka Masanori at ALife Robotics Corporation Ltd.
In 2016, we conducted a survey of high school students regarding science classes, and found that the percentage of high school students who answered that they "like science" or "science is important" was lower than for other subjects. However, more than 80% of elementary and junior high school students answered that they ``like experiments and observations.'' Additionally, a 2019 smartphone penetration rate survey found that approximately 90% of students use smartphones. Additionally, recent advances in VR technology have been remarkable. Based on the above, I thought that creating a simulation app using VR technology using smartphones could change the way high school students think about science classes. In this paper, we developed a new simulation application for science experiments. The subjects were asked to experience the newly created app and answer a questionnaire. The average score was 4 out of 5, which was poor. However, a problem was also discovered at the same time. The problem is that this app is a simulation app, so the user experience is not very good, so I would like to develop an app that is a little more user-friendly in the future. I would like to create apps for other fields while improving the problem.
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Support for Museum Exhibition of Small Fungi using AR Technology Reviewed
Takemura Kakeru, Hamasuna Ota, Hamakawa Fumito, Ikeda Satoshi, Ohe Kaoru, Takei Amane, Sakamoto Makoto, Kurogi Shuichi
Proceeding of The 2024 International Conference on Artificial Life and Robotics (ICAROB2024), J:COM HorutoHall, Oita, Japan 29 683 - 686 2024.2
Language：English Publishing type：Research paper (international conference proceedings) Publisher：株式会社ALife Robotics
There are 25 species of bioluminescent fungi that have been confirmed in Japan, and 12 species have been confirmed in Miyazaki Prefecture. Those fungi are very small. Therefore, it is difficult to observe the structure of fungi exhibited in museums with the naked eye. The purpose of this research is to display 3DCG models of mushrooms using AR (Augmented Reality) technology in order to facilitate observation of these small mushrooms exhibited in museums. Two hundred visitors to the museum were asked to use the application and complete a survey. In order to measure the ease of observation of different app functions and mobile devices used in the survey, we divided the respondents into four groups.
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Adsorption Behavior of Arsenic and Selenium using NiZn Hydroxy Double Salts with Acetate, Chloride, Nitrate and Sulfate Anions Reviewed
Ohe Kaoru, Tabuchi Ryosuke, Oshima Tatsuya
Proceeding of The 2024 International Conference on Artificial Life and Robotics (ICAROB2024), J:COM HorutoHall, Oita, Japan 29 666 - 669 2024.2
Authorship：Lead author, Corresponding author Language：English Publishing type：Research paper (international conference proceedings) Publisher：株式会社ALife Robotics
Arsenic(As) and selenium(Se) has become an increasingly serious water contamination worldwide, so the development of adsorbents to improve the adsorption performance of As and Se oxyanions is desired. In this study, NiZn adsorbents intercalated acetate, chloride, nitrate, and sulfate anions to interlayers of NiZn hydroxy double salts were prepared and their adsorption behavior of As and Se oxyanions was investigated. The Langmuir isotherm model, characteristic of monolayer adsorption, fit the experimental data well with R2 >0.94. The adsorption capacity(qmax) of Se(IV) was the other NiZn-AcO ≈ NiZn-Cl > NiZn-NO3 > NiZn-SO4 and that of Se(VI) was the order of NiZn-Cl > NiZn-AcO > NiZn-NO3 > NiZn-SO4. The qmax of as(V) on NiZn-Cl was about twice as large as that on NiZn-AcO, NiZn-NO3 and NiZn-SO4. NiZn-Cl was found to adsorb As(V) and Se(VI) oxyanions more efficient than NiZn-AcO.
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Automatic Selection of High-Grade Dried Shiitake Mushrooms using Machine Learning Reviewed
Hamasuna Ota, Takemura Kakeru, Hasebe Kodai, Hamakawa Fumito, Biki Bidesh Biswas, Ikeda Satoshi, Ohe Kaoru, Takei Amane, Sakamoto Makoto, Sugimoto Kazuhide
Proceeding of The 2024 International Conference on Artificial Life and Robotics (ICAROB2024), J:COM HorutoHall, Oita, Japan 29 687 - 690 2024.2
Language：English Publishing type：Research paper (international conference proceedings) Publisher：株式会社ALife Robotics
Miyazaki Prefecture is blessed with the rich nature of the Kyushu Mountains, where many mushrooms have grown wild since ancient times, and the production of dried shiitake mushrooms ranks second in Japan after Oita Prefecture. SUGIMOTO Co., Ltd., which will be cooperating with us this time, is a long-established company established in 1970, and at times it is necessary to sort over 1 ton. However, since selection is still done manually, it is very difficult for employees to do the selection. The goal of this research is to determine the quality of shiitake mushrooms using deep learning and video image processing.
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Relationship Between Extraction of Arsenic via Ion Solvation and Hansen Solubility Parameters of Extractants Reviewed International coauthorship
Matsuo N., Ohe K., Oshima T., Yoshizuka K.
Solvent Extraction and Ion Exchange 41 ( 7 ) 940 - 957 2023.9
Publishing type：Research paper (scientific journal) Publisher：Solvent Extraction and Ion Exchange
Extraction of As(III) from hydrochloric acid solution using various solvents on the basis of ion solvation has been reported, but a theoretical framework to describe the suitability of solvents for extraction has not been systematized. In this study, comprehensive extraction tests for As(III) using a variety of organic solvents were conducted to clarify the requirements for solvents to extract As(III). From the results of initial screening tests, various aromatics, ethers, and ketones were rated as candidates for the extraction of As(III) at high HCl concentrations, whereas aliphatic hydrocarbons were excluded. Many solvents showed high extraction capacity for As(III) to give organic fraction concentrations of 150 mM or higher. The logP value (P = partitioning coefficient between n-octanol and water) within a solvent class showed some correlation with extractability of As(III) but the correlation was invalid across solvent types. High correlation was shown between the Hansen solubility parameters of the solvents and As(III) extractability: Twenty of 22 solvents (90.9%) were appropriately classified as valid or invalid for the extraction of As(III) based on the Hansen sphere. 2-Nonanone was recommended as an ideal solvent for As(III) extraction because of its good balance between high extractability and its desirable physical properties for industrial operations. As(III) was quantitatively stripped from 2-nonanone into water with a concentration factor of 22.6.
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Extraction of Metal Ions Using a Calix[4]arene Carboxylic Acid Derivative in Aromatic Ethers Reviewed
OSHIMA Tatsuya, ASANO Tokiya, ISHIBASHI Tatsuya, OHE Kaoru, OHTO Keisuke, JUMINA
Solvent Extraction Research and Development, Japan 30 ( 1 ) 59 - 69 2023.3
Language：English Publishing type：Research paper (scientific journal) Publisher：Japan Association of Solvent Extraction
If calixarenes can be dissolved in a relatively safe non-halogen solvent, they can be used in a liquid-liquid extraction process suitable for mass processing. In the present study, extraction behavior of metal ions using a calix[4]arene carboxylic acid derivative (<sup>t</sup>Oct[4]CH<sub>2</sub>COOH) dissolved in aromatic ethers was investigated. The solubility of <sup>t</sup>Oct[4]CH<sub>2</sub>COOH in aromatic ethers decreases with increase of the length of aliphatic side chain of the ethers. The solubility of <sup>t</sup>Oct[4]CH<sub>2</sub>COOH in 1-butoxybenzene (BB) was 28.0 mmol/L, which is smaller than that in chloroform but is higher than those in hexane and toluene. Divalent metal ions Mn(II), Co(II), Ni(II), Cu(II), Zn(II), and Pb(II) were extracted using <sup>t</sup>Oct[4]CH<sub>2</sub>COOH in BB through proton exchange reaction at similar pH range in toluene, which is higher than that in chloroform. The extraction reaction of Cu(II) using <sup>t</sup>Oct[4]CH<sub>2</sub>COOH in BB was determined by slope analysis and loading test. The stoichiometry between <sup>t</sup>Oct[4]CH<sub>2</sub>COOH and Cu(II) was 2:1.
DOI： 10.15261/serdj.30.59
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Fluro-Protein C-Phycocyanin Docked Silver Nanocomposite Accelerates Cell Migration through NFK Signaling Pathway Reviewed International coauthorship
H.Madhyastha, R.Madhyyastha, E. Chakrabory, K.Banerjee, K. Shah, Y. Nakajima, N. S. Chauhan, S. L. Sudhakaran, K. Ohe, G.K. Muthukaliannan, A. V. Gopaakrishnan, M. Maruyama, N. Watanabe
International Journal of Molecular Sciences 24 ( 4 ) 3184 2023.2
Language：English Publishing type：Research paper (scientific journal)
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Madhyastha H., Madhyastha R., Chakraborty E., Banerjee K., Shah K., Nakajima Y., Chauhan N.S., Sudhakaran S.L., Ohe K., Muthukaliannan G.K., Gopalakrishnan A.V., Maruyama M., Watanabe N.
International Journal of Molecular Sciences 24 ( 4 ) 2023.2
Language：English Publishing type：Research paper (scientific journal) Publisher：International Journal of Molecular Sciences
Currently, there is a great demand for the development of nanomedicine aided wound tissue regeneration via silver doped nanoceuticals. Unfortunately, very little research is being carried out on antioxidants-doped silver nanometals and their interaction on the signaling axis during the bio-interface mechanism. In this study, c-phycocyanin primed silver nano hybrids (AgcPCNP) were prepared and analyzed for properties such as cytotoxicity, metal decay, nanoconjugate stability, size expansion, and antioxidant features. Fluctuations in the expression of marker genes during cell migration phenomena in in vitro wound healing scenarios were also validated. Studies revealed that physiologically relevant ionic solutions did not exhibit any adverse effects on the nanoconjugate stability. However, acidic, alkali, and ethanol solutions completely denatured the AgcPCNP conjugates. Signal transduction RT<sup>2</sup>PCR array demonstrated that genes associated with NFĸB- and PI3K-pathways were significantly (p < 0.5%) altered between AgcPCNP and AgNP groups. Specific inhibitors of NFĸB (Nfi) and PI3K (LY294002) pathways confirmed the involvement of NFĸB signaling axes. In vitro wound healing assay demonstrated that NFĸB pathway plays a prime role in the fibroblast cell migration. In conclusion, the present investigation revealed that surface functionalized AgcPCNP accelerated the fibroblast cell migration and can be further explored for wound healing biomedical applications.
DOI： 10.3390/ijms24043184
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Basic Research on Virtual Technology for Educational Support Video Production Reviewed
Ikeda Satoshi, Miyamoto Kodai, Ohe Kaoru, Sakamoto Makoto, Takei Amane, Yokomichi Masahiro, Aoki Kenji, Ito Tsutomu, Ito Takao
Journal of Robotics, Networking and Artificial Life 10 ( 3 ) 270 - 274 2023
Language：English Publishing type：Research paper (scientific journal) Publisher：ALife Robotics Corporation Ltd.
In 2016, we conducted a survey of high school students regarding science classes, and found that the percentage of high school students who answered that they "like science" or "science is important" was lower than for other subjects. However, more than 80% of elementary and junior high school students answered that they ``like experiments and observations.'' Additionally, a 2019 smartphone penetration rate survey found that approximately 90% of students use smartphones. Additionally, recent advances in VR technology have been remarkable. Based on the above, I thought that creating a simulation app using VR technology using smartphones could change the way high school students think about science classes. In this paper, we developed a new simulation application for science experiments. The subjects were asked to experience the newly created app and answer a questionnaire. The average score was 4 out of 5, which was poor. However, a problem was also discovered at the same time. The problem is that this app is a simulation app, so the user experience is not very good, so I would like to develop an app that is a little more user-friendly in the future. I would like to create apps for other fields while improving the problem.
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Designer Exosomes: Smart Nano-Communication Tools for Translational Medicine Reviewed
Madhyastha Harishkumar, Madhyastha Radha, Nakajima Yuichi, Gothandam Kodiveri Muthukalianan, Ohe Kaoru,Koichiro Shiomori, Kentaro Sakai, Watanabe Nozom
8 ( 11 ) 158 - 172 2021.11
Language：English Publishing type：Research paper (scientific journal)
DOI： 10.3390/bioengineering8110158
Other Link： https://www.mdpi.com/2306-5354/8/11/158
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Adsorption Behavior of Precious Metals and Hazardous Elements on a Crosslinked Polyvinylamine Resin Reviewed
Ohe Kaoru, Tamaoka Katsuki, Tsuchimochi Keigo, Oshima Tatsuya, Honda Go, Nozomi Mamoru
KAGAKU KOGAKU RONBUNSHU 47 ( 4 ) 111 - 117 2021.7
Authorship：Lead author Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Society of Chemical Engineers, Japan
<p>Adsorption behaviors of metal ions were studied on a crosslinked polyvinylamine resin, which was prepared by suspension polymerization of crosslinked polyvinylamide resin followed by hydrolysis. Precious metal ions present as anionic chloride complexes in hydrochloric acid were selectively adsorbed from among many base metals. As a synthetic resin, the adsorbent has a large number of functional groups (primary amino groups) per unit mass and can be obtained at relatively low cost. Maximum adsorption capacity of Hym-A for Pd(II) calculated by the Langmuir equation was 1.68 mmol g-1, which was 1.87 times that of a polyamine-based chelate resin. For comparison, the adsorption of the hazardous elements arsenic and selenium was also investigated. Hym-A adsorbed As(V) over a wider pH range than the chelating resin bearing secondary amines as functional groups. The maximum adsorption capacities of Hym-A for As(V), Se(IV) and Se(VI) were respectively 3.97, 2.42 and 2.31 times larger than those of a commercial resin. The adsorbent can thus be used for recovery of precious metals and removal of harmful elements with a larger throughput.</p>
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Oshima T., Matsuzaki K., Inada A., Ohe K.
Separation and Purification Technology 258 118008 2021.3
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Separation and Purification Technology
© 2020 Elsevier B.V. Ethereal compounds, such as the commercially available extractant dibutyl carbitol (DBC), can extract Au(III) from acidic chloride media by ion solvation. Herein, various aromatic ether compounds comprising an aromatic ring and aliphatic chains were prepared to compare the extraction affinity toward Au(III) without dilution. Aromatic monoethers are not useful for the extraction of Au(III). Conversely, the extraction of Au(III) using aromatic 1,2-diethers increases as a function of hydrochloric acid concentration. For aromatic 1,2-diethers, the shorter the aliphatic chain, the higher the extraction affinity toward Au(III). 1,2-Dimethoxybenzene (o-DMB), which has the shortest side chains, exhibits the highest extraction affinity. 1,3-Dimethoxybenzene (m-DMB), which is a regioisomer for o-DMB, was not suitable for the extraction of Au(III). The extraction selectivity toward Au(III) over that of Fe(III) and Ga(III) using o-DMB, under high concentrations of hydrochloric acid, is higher than that using DBC. Selected aromatic 1,2-diethers, including o-DMB, show a significantly higher extraction capacity toward Au(III) than the industrial requirement of 30 g/dm3. Au(III) extracted using o-DMB was quantitatively recovered by reduction with oxalic acid. In a separation test from a mixed system comprising seven metals, Au(III) was selectively extracted and with a recovery percentage, after reduction, reaching 95.7%.
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T. Oshima, S. Iwao, N. Matsuo, K. Ohe
Solvent Extraction Research and Development, Japan 26 ( 2 ) 69 - 80 2019.5
Language：English Publishing type：Research paper (scientific journal)
Other Link： https://www.jstage.jst.go.jp/article/serdj/26/2/26_69/_article/-char/ja/
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Extraction behavior of metal cations using 8-quinolinol as an extractant in cyclopentyl methyl ether Reviewed
T. Oshima, T. Koyama, K. Ohe, N. Otsuki
Solvent Extraction Research and Development, Japan 26 ( 1 ) 1 - 10 2019.5
Language：English Publishing type：Research paper (scientific journal) Publisher：Solvent Extraction Research and Development
© 2019 Japan Association of Solvent Extraction. All rights reserved. To date, many kinds of chelating extractants have been developed, however, many of the good extractants are insoluble in aliphatic solvents. In the present study, cyclopentyl methyl ether (CPME) was assessed as a solvent for extractants to develop new solvent extraction systems. Many of the extractants (100 mM) were soluble in CPME. The extraction behavior of metal ions using a typical chelating extractant, 8-quinolinol (HQ) in CPME, was studied. The extraction profiles of metal ions using HQ in CPME were similar to those in toluene, whereas metal ions were extracted using HQ in 1-octanol and chloroform under lower pH conditions. The extraction reaction of In(III) using HQ in CPME was confirmed by slope analysis. A 3: 1 complex between HQ and In(III) was formed in CPME by a proton exchange reaction, and the extraction equilibrium constant was determined. In(III), extracted using HQ in CPME, was quantitatively recovered using mineral acids. From the results, CPME was found to be a potential alternative solvent to other toxic organic solvents for the development of a solvent extraction system.
DOI： 10.15261/serdj.26.1
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Extraction Behavior of Arsenic, Selenium, and Antimony Using Cyclopentyl Methyl Ether from Acidic Chloride Media Reviewed
Naoki MATSUO, Tatsuya OSHIMA, Kaoru OHE and Noriyasu OTSUKI
Solvent Extraction Research and Development, Japan 26 ( 2 ) 81 - 89 2019.5
Language：English Publishing type：Research paper (scientific journal)
DOI： 10.15261/serdj.26.81
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ポリビニルアミン架橋樹脂由来の新規イミノ二酢酸キレート吸着剤による金属の高容量吸着 Reviewed
大榮 薫, 大島 達也, 小畑佑介，金丸慎太郎，本多剛，臨護
化学工学論文集 45 66 - 71 2019.3
Language：Japanese Publishing type：Research paper (scientific journal)
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Effect of structure of aromatic ethers on their extraction of Au(III) from acidic chloride media Reviewed
T. Oshima, T. Horiuchi, K. Matsuzaki, K. Ohe
Hydrometallurgy 183 207 - 212 2019.1
Language：English Publishing type：Research paper (scientific journal) Publisher：Hydrometallurgy
© 2018 An aromatic ethereal compound, 1-methoxy-2-octoxybenzene, was recently found to be a good extractant for Au(III) from hydrochloric acid media. The present study therefore investigated the structural factors of ethereal compounds for the extraction of Au(III) under dilute extractant concentrations. In the series of aromatic ethereal compounds used in this study, 1-dodecoxybenzene showed the highest extractability for Au(III). There was a clear correlation between the extractability of Au(III) and the strength of hydrophobicity of the aromatic ethereal compounds. Au(III) was selectively extracted using 1-dodecoxybenzene over other precious- and base-metal cations. Au(III) was quantitatively stripped from this extractant using aqueous thiourea solution.
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Extraction of Gold(Ⅲ) Using Cyclopentyl Methyl Ether in Hydrochloric Acid Media
OSHIMA Tatsuya, OHKUBO Naoki, FUJIWARA Iori, HORIUCHI Takashi, KOYAMA Takao, OHE Kaoru, BABA Yoshinari
Solvent Extraction Research and Development, Japan 24 ( 2 ) 89 - 96 2017.5
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：日本溶媒抽出学会
Recently, cyclopentyl methyl ether (CPME) has found use as a commercially available solvent for various applications. As CPME shows better properties such as more hydrophobicity, less solublity in water, less volatility, and more stablity compared with typical ethereal solvents, it could be used as a diluent or an extractant in liquid-liquid extraction systems. In the present study, CPME was found to be useful for the extraction of Au(III) in hydrochloric acid media. Extraction of Au(III) increased with as increase in the hydrochloric acid concentration. Au(III) was selectively extracted using CPME from other precious metal ions and base metal ions. From the result of the dependency of the Au(III) concentration, CPME can load at least 0.93 g/dm<sup>3</sup> Au(III). Extracted Au(III) was quantitatively stripped from CPME using 0.1 M aqueous thiourea solution. As the solubility of water into CPME is much smaller than that into alcohols such as 1-hexanol, CPME is more favorable as an extractant for Au(III) in hydrochloric acid media.
DOI： 10.15261/serdj.24.89
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Assessment of heavy metals in mining tailing around boroo and zuunkharaa gold mining areas of Mongolia Reviewed
(2) Enkhzaya, S., Ohe, K., Shiomori, K.,Oyuntsetseg, B., Bayanjargal, O., Watanabe, M.
Journal of Environmental Science and Technology 9 ( 5 ) 379 - 389 2016.8
Language：English Publishing type：Research paper (scientific journal)
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Adsorption Behaviour of As, Sb and Se Using MFe2O4 (M=Fe, Co, Mn)
Ohe, K, Sugimoto, M., Oshima, T., Baba, Y.
Proc. Ion Exchange 2016 1 - 9 2016.7
Language：English Publishing type：Research paper (international conference proceedings)
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Enkhzaya S.
Journal of Environmental Science and Technology 9 ( 5 ) 379 - 389 2016
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Journal of Environmental Science and Technology
© 2016 Solongo Enkhzaya et al. Objective: This study aimed to study the mobility of heavy metals using sequential extraction analysis and assess heavy metals in soil samples of mining tailing around the small-scale gold mining areas at Boroo and Zuunkharaa in Mongolia. Methodology: The samples were collected from small scale gold mining area existed in Tov and Selenge province, Mongolia. Physicochemical, chemical and some statistical analysis were made for the mining tailing samples. Results: The pH of the mining tailing samples was determined as 6.10-7.37 and the texture was classified in a silt (Si) and silt loam (SiL) types. The contents of As, Pb and Mn in the samples were determined at very high, 1346-2970, 115-685 and 354-488 mg kg-1by using the XRF analysis. From the predictive analysis, the mining tailing samples contain the residues from small-scale gold mining processing that are characterized by relatively high concentrations of heavy metals. Therefore, 5 steps sequential extraction analysis (Tessier method) was used for the determination of the metals of Al, Mn, Fe, As, Cd and Pb in the small-scale gold mining tailings. Conclusion: In the sequential extraction analysis, Cd, Pb, Fe and Mn are mainly extracted in the Fe/Mn oxides fraction, but As and Al are mainly extracted in the residual fraction. Boroo and Zuunkharaa gold mining area polluted by Pb, Mn, Fe, Al and Cd for measurably level, further assessment of the environmental status is necessary to these areas.
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Oshima T., Kaneizumi K., Ohe K., Baba Y.
Separation and Purification Technology 141 301 - 306 2015.2
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Separation and Purification Technology
© 2014 Elsevier B.V. All rights reserved. p-tert-Octylphenoxyacetic acid ( t OP-OCH 2 COOH) was a better extractant for Cu(II) than was a commercial aliphatic carboxylic acid extractant, namely Versatic 10. In the present study, the synergistic effect of nitrogen-containing donors (N-donors) on the extraction of divalent base-metal ions using t OP-OCH 2 COOH was studied. Pyridine (Py), 2,2′-bipyridine (Bpy), and 1,10-phenanthroline (Phen) were added as synergists. The addition of N-donors to organic phases containing t OP-OCH 2 COOH enhanced the extractabilities of the divalent metals Mn(II), Co(II), Ni(II), Cu(II), and Zn(II). Addition of Phen was the most effective for the enhancement of metal extraction, but the selectivity was low. Synergistic extraction using a mixture of t OP-OCH 2 COOH and Py was more effective for the separation of divalent metal ions. A mixture of t OP-OCH 2 COOH and Bpy gave moderate extraction and selectivity; the following reaction was suggested for the extraction of Cu(II):Cu(aq)2++Bpy (org) +1.5( t OP-OCH 2 COOH)2(org) Cu 2+ (Bpy)( t OP-OCH 2 COOH)( t OP-OCH 2 COO - )2(org) +2H(aq)+.
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Synergistic effect of nitrogen-containing donors on extraction of divalent metal ions using p-tert-octylphenoxyacetic acid Reviewed
T. Oshima, K. Kaneizumi, K.Ohe, Y.Baba
Sep.Purif.Technol. 141 301 - 306 2015.1
Language：English Publishing type：Research paper (scientific journal)
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N-ドテシルアニリンによる塩酸溶液からの白金(IV)の抽出平衡 Reviewed
土居礼佳、大榮薫、大島達也、馬場由成
化学工学論文集 40 ( 6 ) 470 - 474 2014.8
Language：Japanese Publishing type：Research paper (scientific journal)
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コウジ酸由来の新規抽出剤の開発とIn(III)およびGa(III)の高選択的抽出 Reviewed
土居礼佳、大榮薫、大島達也、馬場由成
化学工学論文集 40 ( 6 ) 475 - 480 2014.6
Language：Japanese Publishing type：Research paper (scientific journal)
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Cellulose aerogel regenerated from ionic liquid solution for immobilized metal affinity adsorption
Oshima T., Sakamoto T., Ohe K., Baba Y.
Carbohydrate Polymers 103 ( 1 ) 62 - 69 2014.3
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Carbohydrate Polymers
Surface morphology of cellulosic adsorbents is expected to influence the adsorption behavior of biomacromolecules. In the present study, cellulose aerogel regenerated from ionic liquid solution was prepared for use as a polymer support for protein adsorption. Iminodiacetic acid groups were introduced to the aerogel for immobilized metal affinity adsorption of proteins. A Cu(II)-immobilized iminodiacetic acid cellulose aerogel (Cu(II)-IDA-CA), which has a large specific surface area, showed a higher adsorption capacity than Cu(II)-immobilized iminodiacetic acid bacterial cellulose (Cu(II)-IDA-BC) and Cu(II)-immobilized iminodiacetic acid plant cellulose (Cu(II)-IDA-PC). In contrast, the Cu(II)-immobilized cellulosic adsorbents showed similar adsorption capacities for smaller amino acid and peptides. The results show that cellulose aerogels are useful as polymer supports with high protein adsorption capacities. © 2013 Elsevier Ltd.
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Effect of Ionic Strength, Temperature on Equilibrium and Kinetics of Arsenic Adsorption using Magnetite
KAGAKU KOGAKU RONBUNSHU 40 ( 2 ) 90 - 97 2014.3
Language：Japanese Publishing type：Research paper (scientific journal)
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Cellulose aerogel regenerated from ionic liquid solution for immobilized metal affinity adsorption Reviewed
Oshima, T., Sakamoto, T., Ohe, K., Baba, Y.
Carbohydrate Polymers 103 62 - 69 2014.1
Language：English Publishing type：Research paper (scientific journal)
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Doi Reika, Ohe Kaoru, Oshima Tatsuya, Baba Yoshinari
KAGAKU KOGAKU RONBUNSHU 40 ( 6 ) 470 - 474 2014
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Society of Chemical Engineers, Japan
2-Dodecylsulfanylmethyl-5-hydroxy-pyran-4-one (DSHP) containing a pyrone moiety as a ligand was synthesized in order to develop a highly selective extractant for In(III) and Ga(III). The extraction selectivity of various metal ions from 1 mol dm<sup>3</sup> (=M) aqueous ammonium nitrate solution was examined for DSHP in toluene. Considering selective recovery of In(III) and Ga(III) from a residue of zinc refining and bauxite, In(III) and Ga(III) were selectively extracted over Zn(II) with DSHP, while Ga(III) was selectively extracted over Al(III) at low pH. This indicates that DSHP can be applied to selective separation of Ga(III) from bauxite. It was found that In(III) and Ga(III) were extracted with DSHP according to the following reaction: . The extracted complex was crystallized for analysis by <sup>1</sup>H-NMR. The extraction equilibrium constants for In(III) and Ga(III) with DSHP were determined to be 2.16 [-] and 3.59×10<sup>2</sup> [-], respectively. Moreover, the back extraction of In(III) and Ga(III) from the loaded organic phase was examined using various stripping agents. In(III) and Ga(III) extracted with DSHP were effectively stripped using HCl.
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Extraction Equilibrium of Platinum(IV) with <i>N</i>-Dodecylaniline
Doi Reika, Ohe Kaoru, Oshima Tatsuya, Baba Yoshinari
KAGAKU KOGAKU RONBUNSHU 40 ( 6 ) 470 - 474 2014
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Society of Chemical Engineers, Japan
We have examined the extraction selectivity towards various metals of <i>N</i>-dodecylaniline, which has an aromatic secondary amine moiety, a weaker base than an aliphatic secondary amine. The selectivity of <i>N</i>-dodecylaniline in toluene for extraction from hydrochloric acid solution was examined by a batchwise method at 300 K, and Pt(IV), Pd(II) and Au(III) were found to be quantitatively extracted, while base metals were not extracted. Therefore, <i>N</i>-dodecylaniline as an extractant was found to be a highly selective for Pt(IV), Pd(II) and Au(III) over base metals. In the extraction of Pt(IV), it was suggested that different platinum complexes were extracted at low and high concentrations of hydrochloric acid. Pt(IV) was found to be extracted by the following extraction reactions from hydrochloric acid solution. Back extraction of the extracted Pt(IV) from the loaded organic phase was examined using various stripping agents, of which aqueous thiourea and thiourea containing HCl were found to be effective.
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Ohe Kaoru, Oshima Tatsuya, Baba Yoshinari
KAGAKU KOGAKU RONBUNSHU 40 ( 2 ) 90 - 97 2014
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Society of Chemical Engineers, Japan
Effect of ionic strength and temperature on the equilibrium and kinetics of arsenic adsorption on magnetite prepared by precipitation were investigated. The adsorption of As(III) was independent of ionic strength. After the adsorption of As(III), the zeta potential decreased and the point of zero charge (PZC) of the magnetite shifted to the acidic side. The adsorption of As(III) was considered to be the result of inner-sphere complex formation because of the endothermic reaction and the positive entropy change in the As(III) adsorption reaction. The adsorption of As(V) increased with increasing ionic strength at higher pH than the PZC, and a shift of the PZC was observed after the adsorption of As(V). The exothermic reaction and the positive entropy change of the reaction indicated that the As(V) adsorption occurred by the mechanism of outer- and inner-sphere complex formation. The presence of phosphate and silicate greatly decreased the adsorption of As(III) and As(V). The rate-controlling step in the adsorption of As(III) and As(V) was found to be the intraparticle diffusion process, since the kinetics of As(III) and As(V) adsorptions can be explained by the Dünwald–Wagner equation.
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Oshima T., Ishizaka S., Morizono H., Ohe K., Baba Y.
Separation and Purification Technology 114 11 - 16 2013.5
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Separation and Purification Technology
Two types of alkylhistidine extractants, histidine-2-ethylhexyl amide (His-EH) and N-p-tert-octylphenoxyacetyl-histidine (OP-His) were prepared. The alkylhistidine extractants were impregnated onto a methacrylate-based polymer support to investigate the adsorption selectivity for metal ions. His-EH, which has coordinating imidazole and amino groups, adsorbs Cu(II), Ni(II), Zn(II) and Co(II) at pH > 5. By contrast, OP-His, which has imidazole and carboxyl groups, shows adsorption selectivity; Cu(II) > Zn(II) > Ni(II) > Co(II). A column was packed with OP-His impregnated resin to investigate the separation selectivity between Cu(II) and Co(II). Cu(II) was selectively adsorbed and was efficiently concentrated to 59 times the concentration of the feed solution. © 2013 Elsevier Ltd. All rights reserved.
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Adsorption behavior of metal ions on alkylhistidine extractant impregnated resins: Effect of functional groups of histidine Reviewed
Oshima, T., Ishizaka, S., Morizono, H., Ohe, K., Baba, Y.
Separation and Purification Technology 114 11 - 16 2013.4
Language：English Publishing type：Research paper (scientific journal)
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MAEDA Shota, KUROKI Kuniko, OHE Kaoru, OSHIMA Tatsuya, BABA Yoshinari
KAGAKU KOGAKU RONBUNSHU 38 ( 4 ) 226 - 233 2012.8
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Society of Chemical Engineers, Japan
Bioethanol for fuel is a renewable energy alternative to petroleum. However, because of the azeotropic point between ethanol and water, the separation and concentration of ethanol to yield a product with low water content by the usual method of distillation requires considerable energy. To develop an environmentally friendly method for purification of bioethanol, we examined the adsorption of ethanol on activated carbon prepared from lignin. The adsorption properties of ethanol on activated carbons at 303 K were compared with those of commercially available high-silica zeolites in batchwise fashion. The specific surface areas of activated carbons were found to be about 2000 m<sup>2</sup> g<sup>−1</sup> by the nitrogen gas adsorption method. The adsorption rate of ethanol on activated carbons in powder form reached equilibrium within 0.5 min, and the adsorption isotherm of ethanol on activated carbons from aqueous solution was of the Freundlich type. The adsorption results revealed that the adsorption capacities of activated carbons for ethanol were influenced by their hydrophobicity, micropore size and percentage of micropore volume. The highest adsorption capacity for 5 vol% ethanol was 280 mg g<sup>−1</sup> of the activated carbons prepared from lignin (at 900°C and IR=2). Thermogravimetric analysis (TGA) of activated carbons and high-silica zeolites with adsorbed ethanol was carried out to examine the adsorption mechanisms of ethanol. In both cases, ethanol was found to be selectively adsorbed in preference to water. Finally, activated carbons prepared from lignin maintained their activity even over 20 cycles of adsorption and desorption.
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リグニンを原料とした活性炭の細孔構造とバイオエタノール吸着との定量的相関 Reviewed
前田 正太, 黒木 久仁子, 大榮 薫, 大島 達也, 馬場 由成
化学工学論文集 38 226 - 233 2012.7
Language：English Publishing type：Research paper (scientific journal)
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Enhancement of water solubility and dispersibility for poorly water-soluble nutrients by formation a conjugate with peptides
T. Oshima, N. Matsushita,Y. Yoneda, A. Inada, H. Takahashi, K. Ohe, Y. Baba
International Association of Colloid and Interface Scientist, Conference S5F34 2012.6
Language：English Publishing type：Research paper (scientific journal)
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Selective Extraction of Lysine-rich Proteins by formation of Supramolecular Complex with Macrocyclic Compounds
Tatsuya OSHIMA, Kaoru OHE, Yoshinari BABA
9th international Conference on Separation Science and Techmnology 2011.11
Language：English Publishing type：Research paper (international conference proceedings)
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Characteristics of Heme Iron Preparation from Fish Blood of Cultured Yellowtail
Masaya TODAKA, Tatsuya OSHIMA, Kaoru OHE, Yoshinari BABA
9th international Conference on Separation Science and Techmnology 2011.11
Language：English Publishing type：Research paper (international conference proceedings)
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Effect of pH, Ionic Srength, Coexsing loss on Arsenic Adsorption Using Magnetite
Kaoru OHE,Yasuyuki TAGAI, Tatsuya OSHIMA, Yoshinari BABA
9th international Conference on Separation Science and Techmnology 2011.11
Language：English Publishing type：Research paper (international conference proceedings)
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Adsorption Properties of Bioethanol on Commercial Zeolites and Their Effect on Fermentation
MAEDA Shota, KUROKI Kuniko, OHE Kaoru, OSHIMA Tatsuya, BABA Yoshinari
KAGAKU KOGAKU RONBUNSHU 37 ( 3 ) 223 - 228 2011.6
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Society of Chemical Engineers, Japan
Bioethanol for fuel is a renewable alternative to petroleum, but because it is generally separated and concentrated by distillation, much energy is necessary to produce ethanol with a low water content due to the azeotropic point between ethanol and water. To develop an environmentally friendly method for purification of bioethanol, we examined its adsorption on hydrophobic zeolites. The adsorption properties of ethanol at 303 K and the effect of zeolites on the proliferation and fermentation of yeast at 301 K were investigated. The specific surface areas of zeolites were found to be 300–800 m<sup>2</sup> g<sup>−1</sup> by the N<sub>2</sub> gas adsorption method. The N<sub>2</sub> adsorption/desorption isotherms on zeolites were of type I (micro pore), III (atreto) and IV (meso pore). The adsorption rate of ethanol on zeolites in powder form reached equilibrium within 0.5 min, and the adsorption isotherm of ethanol on zeolites from aqueous solution was of the Freundlich type. It was found from the adsorption results that adsorption capacities of ethanol on zeolites were influenced by hydrophobicity, micropore size and percentage of micropore volume of zeolites. The highest adsorption capacity for 5 vol% ethanol was 90 mg g<sup>−1</sup> using the commercial zeolite HISIV-3000, which indicates that the molecular diameter of ethanol fit the micropore size of the zeolite. An increase of proliferation and fermentation ability was observed with pellet zeolites because yeast adhered to the pellet zeolites.
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ゼオライトによるバイオエタノール吸着特性と発酵への影響 Reviewed
前田正太,黒木久仁子、大榮薫、大島達也、馬場由成
化学工学論文集 37 223 - 228 2011.5
Language：Japanese Publishing type：Research paper (scientific journal)
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Phosphorylated bacterial cellulose for adsorption of proteins
T.Oshima, S.Taguchi, K.Ohe, Y.Baba
Carbohydr. Polym. 83 ( 2 ) 953 - 958 2011.2
Language：English Publishing type：Research paper (scientific journal)
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Phosphorylated bacterial cellulose for adsorption of proteins
Oshima T., Taguchi S., Ohe K., Baba Y.
Carbohydrate Polymers 83 ( 2 ) 953 - 958 2011.1
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Carbohydrate Polymers
Bacterial cellulose (BC) and chemically modified BC are attractive adsorptive materials for biomacromolecules due to their fine network structure. In the present study, the adsorption behavior of proteins on phosphorylated bacterial cellulose (PBC), which has much larger specific surface area than phosphorylated plant cellulose (PPC), was investigated. The proteins were quantitatively adsorbed on PBC at pHs lower than their isoelectric points. The adsorption capacities for lysozyme using PBCs with varying degrees of phosphorylation were determined from adsorption isotherms. The adsorption capacity for the protein increased as percentage phosphorylation increased. The adsorption capacity of PBC was much higher than that of PPC, even though their phosphorylation percentages were similar. However, the adsorption capacities of PBC and PPC were similar for the smaller cationic materials such as tryptophan methyl ester and trivalent lanthanum. From the results of adsorption experiments, PBC was found to be an attractive adsorbent with a large adsorption capacity for proteins. © 2010 Elsevier Ltd. All rights reserved.
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Adsorption of Arsenic(III) and Arsenic (V) on Magnetites containing Zirconium and Cerium Reviewed
K.Ohe, R. Tomimatsu, T.Oshima and Y.Baba
Journal of Ion Exchange 21 ( 3 ) 205 - 210 2010.7
Language：English Publishing type：Research paper (scientific journal)
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Preparation of Iminodiacetic Acid Bacterial Cellulose for Immobilized Metal Affinity
T. Sakamoto, T.Oshima, T.Taguchi, K.Ohe, Y.Baba
J. Ion Exch. 21 ( 3 ) 25 - 30 2010.7
Language：English Publishing type：Research paper (scientific journal)
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OSHIMA Tatsuya, SAKAMOTO Toshihiko, TACHIYAMA Hodzumi, OHE Kaoru, BABA Yoshinari
Chemical engineering 36 ( 3 ) 167 - 173 2010.6
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Society of Chemical Engineers, Japan
The adsorption of histidine-containing dipeptides (HCDPs) such as carnosine (Car) onto a Cu(II)-immobilized cellulosic chelating adsorbent (Cu-CF) was investigated with a view to recovering HCDPs from extracts of food waste. Car was effectively recovered using Cu-CF on the basis of metal affinity interactions. The adsorption rate onto Cu-CF was faster than that onto Cu(II)-immobilized polystyrene chelating adsorbent. The percentage of Car adsorbed onto Cu-CF was maximal under neutral or weakly basic conditions, without interference from coexisting salt, and histidine and HCDPs were selectively adsorbed over other amino acids. Car was selectively adsorbed onto Cu-CF from a model solution of the extract of eel guts, and Car adsorbed on Cu-CF was recovered using eluents such as acetic acid.
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Kukuzaki M., Fujimoto K., Kai S., Ohe K., Oshima T., Baba Y.
Separation and Purification Technology 72 ( 3 ) 347 - 356 2010.5
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Separation and Purification Technology
Ozone absorption into water in a bubble-free ozone-water contacting process was investigated with tubular hydrophilic and hydrophobized Shirasu porous glass (SPG) membranes having uniform pores to gain a better understanding of the membrane's role in the ozone transfer. The surface of SPG membranes was hydrophobized by chemical modification with an organosilane having a fluorocarbon functional group. At a water flow rate of 8 dm 3 min -1 , corresponding to a Reynolds number of 820, the overall mass transfer coefficient, K L based on water phase for the hydrophobized membrane with a mean pore diameter of 0.51 μm was 1.2 × 10 -5 m s -1 , which was much larger than the K L value of 2.1 × 10 -6 m s -1 for the hydrophilic membrane with the same diameter. The main resistances to ozone transfer for the hydrophilic and hydrophobized membranes were in the membrane and in the water phase boundary layer, respectively. Under the same conditions, the mass transfer coefficient in the hydrophilic membrane, k M was 2.9 × 10 -6 m s -1 , which was four orders of magnitude lower than that of the hydrophobized membrane because of the presence of water in the pores. The higher K L values at water flow rates were ascribed to an enhanced turbulence on the membrane surface. Due to an increase in the length of the pores filled with water, the K L value for the hydrophilic membrane increased with an increase in the membrane thickness, while the K L value for the hydrophobized membrane was independent of the membrane thickness because of the gas-filled pores. The K L value was unaffected by the membrane pore diameter for both membranes. © 2010 Elsevier B.V. All rights reserved.
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Adsorption of arsenic using high surface area magnetites Reviewed
K.Ohe, T.Oshima and Y.Baba
Environ Geochem Health 32 283 - 286 2010.4
Language：English Publishing type：Research paper (scientific journal)
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Adsorption of arsenic using high surface area magnetites
Ohe K., Oshima T., Baba Y.
Environmental Geochemistry and Health 32 ( 4 ) 283 - 286 2010.4
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Environmental Geochemistry and Health
Magnetites (MEBWx) were prepared by precipitation in 1-butanol/water mixtures of various mole ratios of 1-butanol to water. It was found that the magnetites prepared in the mixture with high mole ratio of 1-butanol to water have high specific surface area. The adsorption isotherms of As(III) and As(V) with the magnetites at 303 K fitted the Langmuir model well. The adsorption capacities of the magnetite prepared in the mixtures were higher than those of the magnetite prepared without 1-butanol. Their adsorption capacities increased with increasing specific surface area. © 2010 Springer Science+Business Media B.V.
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Ozone mass transfer in an ozone-water contacting process with Shirasu porous glass(SPG) membranes; A comparative study of hydrophilic and hydrophobic membranes
Masato Kukizaki, Kanji Fujimoto, Shinji Kai, Kaoru Ohe, Tatsuya Ohshima
Separation and Purification Technology 72 347 - 356 2010.2
Language：English Publishing type：Research paper (scientific journal)
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Arsenic removal from water using magnetites
Ohe K.
The Global Arsenic Problem: Challenges for Safe Water Production 81 - 94 2010.1
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Global Arsenic Problem: Challenges for Safe Water Production
© 2010 by Taylor & Francis Group, LLC. Arsenic (As) is well known to be a toxic element (WHO 2003) and has also been classified as one of the carcinogenic chemical elements by the International Agency for Research on Cancer (IRAC) (Tchounwou et al. 2004). Exposure of the human body to arsenic through drinking water has been reported from many countries (Bhattacharya et al. 2007) such as Argentina (Bundschuh et al. 2004), Bangladesh (Watanabe 2001), China, India (Roychowdhury et al. 2005), Nepal, Vietnam (Berg et al. 2001), and Japan (Kondo et al. 1999), where large areas of groundwater are contaminated by As with concentrations ranging from 0.1 to over 2 mg L-1 (Mandal and Suzuki 2002, Smedley and Kinniburgh 2002). These concentrations are higher than 0.01 mg L-1, a standard recommended by the World Health Organization (WHO) (WHO 2006). Long-term consumption of drinking water contaminated with As causes, among other diseases, cancers of the skin, lung, liver, kidney and bladder (Liao et al. 2009). Thus, the As contamination in groundwater is considered a serious problem.
DOI： 10.1201/b10537
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Oshima T., Tachiyama H., Kanemaru K., Ohe K., Baba Y.
Separation and Purification Technology 70 ( 1 ) 79 - 86 2009.11
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Separation and Purification Technology
The adsorption of histidine-containing dipeptides such as carnosine (Car) onto a copper(II) immobilized chelating resin has recently been reported. Cu(II) immobilized iminodiacetic acid chelating resin selectively adsorbs Car via a metal affinity interaction from saline water. In this study, the adsorption behavior of Car on chelating resins after the immobilization of a series of divalent transition metal ions (Cu(II), Ni(II), Co(II) and Zn(II)) was investigated. Only Cu(II) immobilized chelating resin (Cu-IDA) adsorbed Car from the saline solution. The elution of Cu(II) from Cu-IDA was minimized by optimizing the amount of Cu(II) immobilized on the resin. In a column operation for the recovery of Car using Cu-IDA we found that Car was efficiently concentrated to 20 times the concentration of the feed solution. © 2009 Elsevier B.V. All rights reserved.
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Oshima Tatsuya, Sakamoto Toshihiko, Tachiyama Hodzumi, Kanemaru Kenzo, Ohe Kaoru, Baba Yoshinari
Journal of bioscience and bioengineering 108 ( 1 ) 2009.11
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：公益社団法人日本生物工学会
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Chemistry of Arsenic
Koaru Ohe
Area-Focused Training Course Integrated Arsenic Mitigation for Asian Countries 2009.10
Language：English Publishing type：Research paper (other academic)
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Oshima T., Yamanaka Y., Ohe K., Baba Y.
Solvent Extraction Research and Development 16 69 - 79 2009.9
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Solvent Extraction Research and Development
The adsorption of amino acids and vitamin B 1 using silver(I) immobilized chelating resins was investigated. The sulfur-containing amino acid methionine (Met) and vitamin B 1 were adsorbed on Ag(I) immobilized resins, through metal affinity interaction. A thiourea chelating resin was more favorable for immobilizing Ag(I) than an iminodiacetic acid chelating resin, from the viewpoint of less elution of Ag(I). The adsorption capacity of Met on the Ag(I) immobilized thiourea resin increases with increasing amount of immobilized Ag(I). A sulfur-containing amino acid, aromatic amino acids, and histidine were adsorbed selectively, relative to other amino acids, on the Ag(I) immobilized resin. 70 % of the Met adsorbed on the Ag(I) immobilized resin was recovered by shaking with distilled water.
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Synthesis of Thioether-Anchored Porous Chitosan Microspheres with Large Pores and its Application to Recovery of Precious Metals Reviewed
Y. Baba, Y. Kanai, K. Ohe, T. Oshima
Chemeca 2009 2009.9
Language：English Publishing type：Research paper (scientific journal)
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Adsorption of arsenic using magnetite with high surface area Reviewed
K.Ohe, T. Oshima, Y. Baba
8th World Congress of Chemical Engineering 2009 2009.8
Language：English Publishing type：Research paper (scientific journal)
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Degradation of methyl orange using short-wavelength UV irradiation with oxygen microbubbles, Reviewed
Tsutomu Tasaki, Tsubasa Wada, Kanji Fujimoto, Kaoru Ohe, Tatsuya Ohshima, Yoshinari Baba, Masato Kukizaki
Journal of Hazards Materials 162 1103 - 1110 2009.7
Language：English Publishing type：Research paper (scientific journal)
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Adsorption and concentration of histidine-containing dipeptides using divalent transition metal immobilized chelating resin
T. Oshima, H. Tachiyama, K. Kanemaru, K. Ohe, Y. Baba
Sep. Purif. Technol 70 79 - 86 2009.5
Language：English Publishing type：Research paper (scientific journal)
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Adsorption of sulfur-containing amino acid and vitamin on silver (I) immobilized chelating resin Reviewed
T. Oshima, Y. Yamanaka, K. Ohe, Y. Baba
Solv. Extr. Res Develop.Jpn. 16 67 - 77 2009.4
Language：English Publishing type：Research paper (scientific journal)
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Degradation of methyl orange using short-wavelength UV irradiation with oxygen microbubbles
Tasaki T., Wada T., Fujimoto K., Kai S., Ohe K., Oshima T., Baba Y., Kukizaki M.
Journal of Hazardous Materials 162 ( 2-3 ) 1103 - 1110 2009.3
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Journal of Hazardous Materials
A novel wastewater treatment technique using 8 W low-pressure mercury lamps in the presence of uniform-sized microbubbles (diameter = 5.79 μm) was investigated for the decomposition of methyl orange as a model compound in aqueous solution. Photodegradation experiments were conducted with a BLB black light blue lamp (365 nm), a UV-C germicidal lamp (254 nm) and an ozone lamp (185 nm + 254 nm) both with and without oxygen microbubbles. The results show that the oxygen microbubbles accelerated the decolorization rate of methyl orange under 185 + 254 nm irradiation. In contrast, the microbubbles under 365 and 254 nm irradiation were unaffected on the decolorization of methyl orange. It was found that the pseudo-zero order decolorization reaction constant in microbubble system is 2.1 times higher than that in conventional large bubble system. Total organic carbon (TOC) reduction rate of methyl orange was greatly enhanced by oxygen microbubble under 185 + 254 nm irradiation, however, TOC reduction rate by nitrogen microbubble was much slower than that with 185 + 254 nm irradiation only. Possible reaction mechanisms for the decolorization and mineralization of methyl orange both with oxygen and nitrogen mirobubbles were proposed in this study. © 2008 Elsevier B.V. All rights reserved.
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Adsorption of histidine-containing dipeptides on copper (II) immobilized chelating resin from saline solution Reviewed
T. Oshima, K. Kanemaru, H. Tachiyama, K. Ohe, Y. Baba
J. Chromatogr. B 876 116 - 222 2009.3
Language：English Publishing type：Research paper (scientific journal)
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Adsorption of Amino Acid Derivatives on Calixarene Carboxylic Acid Reviewed
T. Oshima, R.Saisho, K. Ohe, Y. Baba, K. Ohto
Reactive and Functional Polymers 69 105 - 110 2009.2
Language：English Publishing type：Research paper (scientific journal)
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Degradation of methyl orange using short-wavelength UV irradiation with oxygen microbubbles Reviewed
T. Tasaki,T. Wada,K. Fujimoto,S. Kai,K. Ohe ,T. Oshima,Y. Baba,M. Kukizaki
Journal of Hazardous Materials 162 ( 2-3 ) 1103 - 1110 2009.2
Language：English Publishing type：Research paper (scientific journal)
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Adsorption of amino acid derivatives on calixarene carboxylic acid impregnated resins
Oshima T., Saisho R., Ohe K., Baba Y., Ohto K.
Reactive and Functional Polymers 69 ( 2 ) 105 - 110 2009.2
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Reactive and Functional Polymers
Macrocyclic host molecules calixarene carboxylic acid derivatives are found to act as powerful extractants for biologically important amino compounds. A series of adsorbents were prepared from a methacrylate-based polymer Amberlite XAD-7 by impregnation with various calixarene derivatives, for adsorptive recovery of amino acid derivatives. The larger macrocycles calix[6]arene and calix[8] arene carboxylic acid derivatives were more effective for adsorption of amino acid derivatives on the impregnated resin than the calix[4]arene derivative. Since adsorption proceeds mainly via electrostatic interaction, the carboxylic acid groups introduced into the calixarene platform were important for adsorption of cationic amino acid derivatives. The adsorption selectivity for amino compounds using adsorbent impregnated with the calix[6] arene carboxylic acid derivative depends simply on the hydrophobicity of the adsorbates. © 2008 Elsevier Ltd. All rights reserved.
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OSHIMA Tatsuya, KANEMARU Kenzo, TACHIYAMA Hodzumi, OHE Kaoru, BABA Yoshinari
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences 876 ( 1 ) 116 - 122 2008.12
Language：Japanese Publishing type：Research paper (scientific journal)
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Oshima T., Kanemaru K., Tachiyama H., Ohe K., Baba Y.
Journal of Chromatography B: Analytical Technologies in the Biomedical and Life Sciences 876 ( 1 ) 116 - 122 2008.12
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Journal of Chromatography B: Analytical Technologies in the Biomedical and Life Sciences
Adsorption of histidine-containing dipeptides such as carnosine (Car) was investigated using copper(II) immobilized cation exchange resins. Adsorption of Car was enhanced using Cu(II) immobilized resins, on the basis of metal affinity interactions. In particular, iminodiacetic acid chelating resin with immobilized Cu(II) (Cu-IDA) can adsorb Car from saline water. Car was adsorbed on Cu-IDA even in the presence of 1000 mM of NaCl. Adsorption of various amino acids on Cu-IDA was compared under same conditions. Histidine and the histidine-containing dipeptides were selectively adsorbed on Cu-IDA over other amino acids, both in the absence and in the presence of NaCl. Therefore, immobilized metal affinity adsorption is an efficient method for recovering histidine-containing dipeptides from saline water. © 2008 Elsevier B.V. All rights reserved.
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Adsorption behaviors of arsenate and arsenite using TiO2-Fe3O4
Kaoru Ohe, Kenji Masukagami, Tatsuya Oshima, Yoshinari Baba
2008 Taiwan /Korea /Japan Chemical Engineering Conference and the 55th Taiwan Institute of Chemical Engineers Annual Conference 2008.11
Language：English Publishing type：Research paper (international conference proceedings)
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Denaturation of Lysozyme Using a Porphyrin Derivative Bearing Multiple Anionic Groups Reviewed
T. Oshima, H. Muto, K. Ohe, Y. Baba
Proceedings of the 12th Asian Pacific Confederation of Chemical Engineering Congres 4-036 2008.9
Language：English Publishing type：Research paper (scientific journal)
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Effect of Oxyanions on Adsorption of As(III) and As(V) Using Magnetite
K.Ohe, Y.Tagai, T.Oshima, Y.Baba
Proceedings of The 5th Japnan/Korea Internationa Symposium on Materials Science and Resources Recycling 138 - 139 2007.12
Language：English Publishing type：Research paper (international conference proceedings)
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Preparation of N-Ligands Grafts Chitosdan Derivateives for Recovery of Precious Metal Ions from Aqueous Solutions
R.P.Dhakal, K.Ohe, T.Oshima, Y.Baba
The Proceedings of The 5th Japan/Korea International Symposium on Materials Science and Resources Recycling 111 - 112 2007.12
Language：English Publishing type：Research paper (international conference proceedings)
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Adsorption Behaviors of Bioactive Amines and Proteins on Phosphorylated Bacterial Cellulose Reviewed
T.Oshima, S.Taguchi, H.Fujiwara, K.Ohe, Y.Baba
Journal of Ion Exchange 18 60 - 63 2007.10
Language：English Publishing type：Research paper (scientific journal)
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Preparation of Palladium-Imprinted Chitosan Derivative and its Adsorption Properties of Precious Metals Reviewed
Y.Baba, K.Ohe, T.Oshima, R.P.Dhakal
Journal of Ion Exchange 18 82 - 87 2007.10
Language：English Publishing type：Research paper (scientific journal)
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Adsorption Behavior of Arsenic Using Spherical Porous Silica Particles Covered with Magnetite Reviewed
K.Ohe, Y.Tagai, T.Oshima, Y.Baba, M.Shimizu, Y.Miyake and T.Horikawa
Journal of Ion Exchange 18 154 - 157 2007.10
Language：English Publishing type：Research paper (scientific journal)
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Removal of As(III) and As(V) in Groundwater Using Ferrite Adsorbents Reviewed
K.Ohe, R.Tomimatsu, T.Oshima, Y.Baba
J. Ion Exchange, 18, 404-407(2007) 18 ( 4 ) 404 - 407 2007.10
Language：English Publishing type：Research paper (scientific journal)
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Adsorption Behavior of Carnosine and Anserine on Copper (II) immobilized cation exchange resins Reviewed
T.Oshima, K.Kanemaru, K.Ohe, Y.Baba
Journal of Ion Exchange 18 46 - 49 2007.10
Language：English Publishing type：Research paper (scientific journal)
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Removal of As(III) and As(V) in Groundwater Using Ferrite Adsorbents
Ohe Kaoru, Tomimatsu Rui, Oshima Tatsuya, Baba Yoshinari
日本イオン交換学会誌 18 ( 4 ) 550 - 553 2007
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Society of Ion Exchange
Ferrite adsorbents containing magnesium, cobalt, nickel, zinc were prepared in order to remove As (III) and As (V) . They are adsorbents with large specific surface area. The ferrite adsorbents could effectively adsorb As (III) and As (V) at neutral pH. The adsorption percentage of As (III) and As (V) onto cobalt ferrite was larger than the other ferrite adsorbents. The adsorption capacity of cobalt ferrite for As (III) and As (V) was 0.83 and 0.52 mmol/g, respectively. The adsorption capacities of As (III) and As (V) on magnesium ferrites increased with increasing their specific surface area, suggesting that functional groups on the surface participate in the adsorption.
DOI： 10.5182/jaie.18.550
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Baba Yoshinari, Ohe Kaoru, Ohshima Tatsuya, Dhakal Rabindra P.
日本イオン交換学会誌 18 ( 4 ) 226 - 231 2007
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Society of Ion Exchange
In order to develop highly selective adsorbents for recovery of palladium (II), the palladium (II) -imprinted chitosan derivative (PIPMC) was synthesized using <I>N</I>- [pyridylmethyl] -chitosan (PMC) . The adsorption rate and adsorption equilibrium of precious metals on PIPMC were compared with those on PMC to elucidate the template effects. The adsorption rate of palladium (II) on PIPMC is very fast and equilibrated within one hour, while at least 10 hours is necessary to reach equilibrium by PMC. PIPMC provided the selective chelate formation spaces toward not only templated palladium (II), but gold (III), nickel (II) and copper (II) that commonly form planar complexes. The template effect of palladium (II) was studied by examining the adsorption selectivity and kinetics of palladium (II) using hydrochloric acid and 1 M aqueous ammonium nitrate solution.
DOI： 10.5182/jaie.18.226
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Adsorption Behavior of Arsenic Using Spherical Porous Silica Particles Covered with Magnetite
Ohe Kaoru, Oshima Tatsuya, Baba Yoshinari, Tagai Yasuyuki, Shimizu Masayuki, Miyake Toshikazu, Horikawa Toshihide
日本イオン交換学会誌 18 ( 4 ) 298 - 301 2007
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Society of Ion Exchange
The adsorption behavior of arsenic from water on spherical porous silica particles (SiMAG) covered with magnetite was investigated under batch equilibrium conditions at 303K. The specific surface area and the pH at zero point of charge of SiMAG were 540 m<SUP>2</SUP>/g and 4.6, respectively. Both of As (V) and As (III) were adsorbed on SiMAG The adsorption of As (V) increased with decreasing pH, while that of As (III) was slightly dependent on pH. The adsorption capacity of SiMAG towards As (V) was 0.85 mmol/g.
DOI： 10.5182/jaie.18.298
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Bacterial Cellulose for Adsorption of Antimony
Suetsugu Akinori, Oshima Tatsuya, Ohe Kaoru, Baba Yoshinari
日本イオン交換学会誌 18 ( 4 ) 186 - 189 2007
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Society of Ion Exchange
As the thickness of bacterial cellulose (BC) microfibrils is two orders of magnitude smaller than that of plant cellulose (PC), BC is expected for increasing adsorption for various adsorbates. Therefore, in this study, adsorption behavior of Sb (III) on BC was evaluated and compared with that on PC. The adsorption capacity for Sb (III) on BC was slightly greater than that on PC, however, the initial reaction rate of adsorption of Sb (III) on BC was much faster than that on PC. The result suggested that BC is superior to PC in rapid adsorption of Sb (III), on the basis of the large surface area.
DOI： 10.5182/jaie.18.186
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Adsorption Behaviors of Bioactive Amines and Proteins on Phosphorylated Bacterial Cellulose
Oshima Tatsuya, Taguchi Sachiko, Fujiwara Hiromi, Ohe Kaoru, Baba Yoshinari
日本イオン交換学会誌 18 ( 4 ) 204 - 207 2007
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Society of Ion Exchange
The present study examined the adsorption of bioactive amines and proteins onto phosphorylated bacterial cellulose (PBC) and phosphorylated plant cellulose (PPC), which contain similar amounts of phosphoric acid groups. Physiologically important organic amines such as dopamine and serotonin are adsorbed onto PBC at neutral pH. In addition, a cationic protein lysozyme was quantitatively adsorbed onto PBC. The adsorption capacity of PBC for lysozyme (MW 14, 300) was higher than that of PPC. In contrast, PBC and PPC had similar adsorption capacities for tryptophan methyl ester (MW 219) . From these results the chemically modified bacterial cellulose can be expected to adsorb large quantities of biomacromolecules.
DOI： 10.5182/jaie.18.204
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Adsorption Behavior of Carnosine and Anserine on Copper(II) Immobilized Cation Exchange Resins
Oshima Tatsuya, Kanemaru Kenzo, Ohe Kaoru, Baba Yoshinari
日本イオン交換学会誌 18 ( 4 ) 190 - 193 2007
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Society of Ion Exchange
Adsorption behaviors of the histidine-containing dipeptides, carnosine (Car) and anserine (Ans) were studied using copper (II) immobilized cation exchange resins. Commercial sulfonic acid, carboxylic acid, iminodiacetic acid (IDA), and aminophosphoric acid resins were used for immobilizing copper (II) . Adsorptions of Car and Ans were especially enhanced using copper (II) immobilized IDA resin (Cu-IDA) . Car and Ans were adsorbed on Cu-IDA even in the presence of 100 mmol/dm<SUP>3</SUP> of sodium chloride. Histidine and the histidine-containing dipeptides were selectively adsorbed on Cu-IDA over other amino acids. Immobilized metal affinity adsorption is available for separation of the dipeptides from saline water.
DOI： 10.5182/jaie.18.190
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Adsorption behavior of catecolamines on a calixarene carboxylic acid impregnated resin
Oshima T., Saisho R., Ohe K., Baba Y., Ohto K.
Solvent Extraction Research and Development 13 123 - 129 2006.12
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Solvent Extraction Research and Development
This paper describes adsorption of catecholamines on resins impregnated with a calix[n]arene (n=4,6,8) carboxylic acid derivative. Catecholamines are adsorbed on the resins under weakly acidic conditions through a proton exchange reaction. The order of dopamine adsorption on the series of the impregnated resins was consistent with that of the sizes of the macrocycles impregnated on the polymer matrix: calix[8] arene > calix[6]arene > calix[4]arene. This order is not consistent with that of the extractabilities of the extractants reported in a previous study. The order of maximum adsorption capacity for dopamine was also consistent with that of the size of t he calixarene.
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Baba Y., Ohe K., Kawasaki Y., Kolev S.
Reactive and Functional Polymers 66 ( 10 ) 1158 - 1164 2006.10
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Reactive and Functional Polymers
Five new adsorbents for Hg(II) containing nitrogen donor groups were prepared by polyaminating glycidylmethacrylate-divinylbenzene microspheres using ethylenediamine or polyethyleneimines with molecular masses 423, 600, 1800, or 10,000 Da. Adsorption experiments with Hg(II) from hydrochloric acid solutions showed that the ethylenediamine microspheres exhibited higher adsorption capacity for Hg(II) than the other four polyaminated microspheres studied. The ethylenediamine based microspheres showed high selectivity for Hg(II) and possibility for its preconcentration in the presence of base metal ions such as Fe(III), Co(II), Cu(II) and Cd(II). These microspheres were also found to be reusable when 1.0 M nitric acid was utilized as the eluting agent. © 2006 Elsevier B.V. All rights reserved.
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SHIRAGAMI Tsutomu, YUI Toshifumi, OHE Kaoru, MATSUMOTO Jin, MIYATAKE Munetoshi
18 206 - 207 2006.7
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japanese Society for Engineering Education
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4-225 Chemistry Experiment for Inquiry Education
SUGAMOTO Kazuhiro, OHE Kaoru, MATSUMOTO Jin, MIYATAKE Munetoshi
18 334 - 335 2006.7
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japanese Society for Engineering Education
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SHIRAGAMI Tsutomu, YUI Toshifumi, OHE Kaoru, MATSUMOTO Jin, MIYATAKE Munetoshi
Proceedings of Annual Conference of Japanese Society for Engineering Education 2006 ( 0 ) 206 - 207 2006
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japanese Society for Engineering Education
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4-225 Chemistry Experiment for Inquiry Education
SUGAMOTO Kazuhiro, OHE Kaoru, MATSUMOTO Jin, MIYATAKE Munetoshi
Proceedings of Annual Conference of Japanese Society for Engineering Education 2006 ( 0 ) 334 - 335 2006
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japanese Society for Engineering Education
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Adsorptive removal of Copper(II) on N-methylene phosphonic Chitosan derivative
Baba Y., Aoya Y., Ohe K., Nakamura S., Ohshima T.
Journal of Chemical Engineering of Japan 38 ( 11 ) 887 - 893 2005.11
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Journal of Chemical Engineering of Japan
A crosslinked N-methylene phosphonic chitosan (=NMPC) was newly synthesized by reacting chitosan with phosphorous acid in order to remove traces of copper(II) from a crude palladium(II) solution. First of all, the adsorption selectivity of NMPC for metal ions was examined from a 1 mol/dm 3 (=M) aqueous ammonium nitrate solution. The adsorption of metal ions on NMPC was dependent on an equilibrium pH, and their adsorption shifted to a lower pH region compared with crosslinked original chitosan (=CLC). NMPC began to adsorb all the metal ions except for palladium(II) at around pH 1-3 and then their adsorption increased with an increase in pH. On the contrary, palladium(II) was adsorbed in lower pH around 0-1, then its adsorption rapidly decreased with increasing pH. These results indicate that base metals can be selectively separated and removed from the crude palladium(II) solution using NMPC only by adjusting the pH. Especially, the adsorption equilibrium of copper(II) was quantitatively examined since the separation of copper(II) from a crude palladium(II) solution is commercially very important. The adsorption of copper(II) showed the maximum value at around pH 5 and then it rapidly decreased in the higher pH region. The adsorption of copper(II) was little dependent on the ammonium nitrate concentration at pH < 4, however, beyond which it decreased with the increasing concentration of ammonium nitrate. The adsorption equilibrium of copper(II) was quantitatively discussed by taking account of the formation of ammine complexes of copper(II) with ammonia in the higher pH region. The adsorption capacity of NMPC for copper(II) was 3.81 mol/kg, which is twofold greater than that of CLC. Copyright © 2005 The Society of Chemical Engineers, Japan.
DOI： 10.1252/jcej.38.887
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Adsorption behavior of arsenic(III) and arsenic(V) using magnetite
Ohe K., Tagai Y., Nakamura S., Oshima T., Baba Y.
Journal of Chemical Engineering of Japan 38 ( 8 ) 671 - 676 2005.11
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Journal of Chemical Engineering of Japan
In order to investigate the adsorptive properties for As(III) and As(V) at 303 K, the magnetite was prepared by adding the aqueous sodium hydroxide solution to the mixture solution of Fe 2+ :Fe 3+ = 1:2 using iron chloride. The adsorption of As(III) and As(V) was dependent on equilibrium pH and showed a maximum value at pH 6 and 5, respectively. From their chemical species existing at each pH and the pH of the zero point of charge of the magnetite surface, As(V) was probably adsorbed on the surface of the magnetite through the electrostatic force, while the adsorption of As(III) was different from that of As(V). It is probable that As(III) was absorbed through an ester reaction on the magnetite. The adsorption capacities of As(III) and As(V) were 2.77 × 10 -1 mmol·g -1 and 2.28 × 10 -1 mmol·g -1 , respectively. The adsorption equilibrium constants for As(III) and As(V) were 4.74 dm 3 ·mmol -2 and 12.1 dm 3 ·mmol -1 , respectively, suggesting that the magnetite has higher affinity to As(V). An aqueous sodium hydroxide solution was useful as an eluent for desorption of As(III) and As(V). Copyright © 2005 The Society of Chemical Engineers, Japan.
DOI： 10.1252/jcej.38.671
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Adsorption Behavior of Arsenic(III) and Arsenic(V) Using Magnetite Reviewed
K.Ohe, Y.Tagai, S.Nakamura, T.Oshima and Y.Baba
Journal of Chemical Engineering Japan 38 671 - 676 2005.8
Language：English Publishing type：Research paper (scientific journal)
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BABA Yoshinari, FUJIMOTO Kanji, KIMURA Junichi, OHE Kaoru, NAKAMURA Shigeo
10 ( 2 ) 224 - 225 2004.7
Language：Japanese Publishing type：Research paper (scientific journal)
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Preparation of butyric acid-enclosing chitosan microspheres and its release behavior
BABA Yoshinari, FUJIMOTO Kanji, NAKAMURA Shigeo, OHE Kaoru
10 ( 2 ) 226 - 227 2004.7
Language：Japanese Publishing type：Research paper (scientific journal)
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Adsorptive Removal of Heavy Metals on Chitosan Derivatives with Phosphonyl and Pyridyl Groups
Baba Yoshinari, Aoya Youji, Ohe Kaoru, Nakamura Shigeo
アジア・太平洋化学工学会議発表論文要旨集 2004 ( 0 ) 998 - 998 2004
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：公益社団法人 化学工学会
Two kinds of crosslinked chitosan derivatives were synthesized by introducing the <I>N</I>-methylene phosphonic acid(=NMPC) and <I>N</I>-2-pyridylmethyl(=PMC) groups to chitosan in order to remove heavy metals from wastewaters. The adsorption of metal ions on NMPC and PMC was dependent on an equilibrium pH of 1 mol dm<SUP>-3</SUP>(=M) aqueous ammonium nitrate solution and was shifted to lower pH region compared with crosslinked original chitosan(=CLC). NMPC began to adsorb all metal ions used in this study at pH around 2. Especially, the adsorption of copper(II) showed the maximum value at pH 5-6 and then it decreased in the higher pH region. The adsorption of copper(II) was independent of the ammonium nitrate concentration at pH < 5, however, beyond which it decreased with increasing concentration of ammonium nitrate. While, PMC adsorbed copper(II) and nickel(II) at pH below 2. Cobalt(II), zinc(II) and cadmium(II) that form octahedral-type complexes were adsorbed at pH around 3. This result suggests that PMC has a high selectivity for copper(II) and nickel(II) which form planar-type complexes. It was found that copper(II) was adsorbed on PMC as a chelate complex accompanied by two nitrate anions as the counter-ion.
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Adsorption Behaviors of Arsenic and Heavy Metals using Magnetite
Ohe Kaoru, Tagai Yasuyuki, Nakamura Shigeo, Baba Yoshinari
アジア・太平洋化学工学会議発表論文要旨集 2004 ( 0 ) 174 - 174 2004
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：公益社団法人 化学工学会
Magnetite prepared by adding the aqueous sodium hydroxide solution to the mixture solution of Fe<SUP>2+</SUP>: Fe<SUP>3+</SUP> = 1 : 2 was investigated on the adsorptive properties for arsenic(V) anion and cations such as cobalt(II), copper(II), cadmium(II), lead(II), nickel(II) and zinc(II) at 303K. Especially, arsenic(V) and lead(II) with high toxicity were studied in detail. Adsorption of arsenic(V) and lead(II) was dependent on equilibrium pH. The adsorption percentages of arsenic(V) and lead(II) showed the optimum values at around pH<SUB>eq</SUB> 4-5 and pH<SUB>eq</SUB> 5, respectively. From their chemical species existing at each pH and pH of zero point of charge on the magnetite surface, arsenic(V) and lead(II) were probably adsorbed on the surface of the magnetite by electrostatic force and ion exchange, respectively. The adsorption of arsenic(V) and lead(II) was the Langmuir type. The adsorption capacity and the adsorption equilibrium constant for arsenic(V) were 2.28 x 10<SUP>-1</SUP> mmol g<SUP>-1</SUP> and 1.21 dm<SUP>3</SUP> mmol<SUP>-1</SUP>, respectively and those for lead(II) were 2.13 x 10<SUP>-1</SUP> mmol g<SUP>-1</SUP> and 5.03 dm<SUP>3</SUP> mmol<SUP>-1</SUP>, respectively, at 303K. The adsorption of lead(II) was an endothermal reaction from the effect of the temperature on the adsorption. An aqueous sodium hydroxide solution was useful as an agent for desorption from arsenic(V)-loading magnetite.
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Mechanism of gold adsorption by persimmon tannin gel
Nakajima A., Ohe K., Baba Y., Kijima T.
Analytical Sciences 19 ( 7 ) 1075 - 1077 2003.7
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Analytical Sciences
Gold adsorption by persimmon tannin (PT) gel from a solution containing hydrogen tetrachloroaurate(III) was examined. A flow-rate examination in a column system indicated the reduction of Au(III) ion to Au(0). XRD patterns clarified the existence of Au(0) on the gel which adsorbed gold. The gel could also adsorb colloidal Au(0) prepared independently. A model consisting of ligand exchange, Au(III) reduction to Au(0), and resulting Au(0) adsorption by PT gel was presented for the gold adsorption mechanism.
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Removal of nitrate anion by carbonaceous materials prepared from bamboo and coconut shell
Ohe K., Nagae Y., Nakamura S., Baba Y.
Journal of Chemical Engineering of Japan 36 ( 4 ) 511 - 515 2003.4
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Journal of Chemical Engineering of Japan
The adsorption behavior of nitrate anion was investigated from aqueous solution using activated carbon (AC) prepared from coconut shells and charcoal (CB) prepared from bamboo. The adsorption of nitrate anions on these adsorbents exhibited maximum values in the region of equilibrium pH 2-4, and was explained by the adsorption of the Langmuir type. The adsorption capacity and the adsorption equilibrium constant for AC were 2.66 × 10 -1 mmol·g -1 , and 2.72 dm 3 ·mmol -1 , respectively, and those for CB were 1.04 × 10 -1 mmol·g -1 and 3.53 dm 3 ·mmol -1 , respectively, at 303 K. The order of the adsorption capacity was the same as the order of their specific surface areas. This suggests that the specific surface area is one of the factors that determine the adsorption ability for nitrate anions. The theoretical curves calculated using these values were in good agreement with the experimental data. From the obtained thermo-dynamic parameters, it was found that the adsorption of nitrate anions on AC and CB contributes to the hydrophobic interaction.
DOI： 10.1252/jcej.36.511
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OHE Kaoru, OKAMOTO Kenzo, NAKAMURA Shigeo, BABA Yoshinari
日本イオン交換学会誌 14 ( 0 ) 325 - 328 2003
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Society of Ion Exchange
New adsorbents (AP, AMP, AHMP and MG) were prepared by introducing the aminoalcohol groups such as 3-amino-1, 2-propanediol, 2-amino-2-methyl-1, 3-propanediol, 2-amino-2-hydroxymethyl-1, 3-propandiol and N-methyl-D (-) -glucamine, respectively, to glycidyl methacrylate-divinylbenzene microspheres (GD) in order to investigate the adsorption properties of boron. All experiments were carried out using a batch method. The amount of OH group introduced to microspheres is the following order: MG>AMP>AHMP>AP. The adsorption of boron showed maximums at pH 6-8 for all adsorbents. The adsorption capacity and the adsorption equilibrium constant were determined using the Langmuir equation. Their adsorption capacities for boron are the following order: AHMP>MG>AP>AMP. Although the amount of OH group introduced to AP is less than AMP, the adsorption capacity of AP is higher than AMP. This result suggests that boron prefers the five-membered chelating ring to the six-membered chelating ring. Boron adsorbed on AMP was easily desorbed using 1 mol·dm<SUP>-3</SUP> hydrochloric acid.
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Molecularly Imprinted Mesoporous Silicas for the Separation of Metal Ions by Sol-Gel Method
BABA Yoshinari, OHE Kaoru, NAKAMURA Shigeo
日本イオン交換学会誌 14 ( 0 ) 161 - 164 2003
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Society of Ion Exchange
The mesoporous silicas doubly imprinted with both surfactant micelles and metal ions acting as templates were prepared to develop highly selective adsorbents by cocondensation of tetraethoxysilane (TEOS) and copper-3- (2-aminoethylamino) propyltrimethoxysilane (Cu (appts) <SUB>2</SUB><SUP>2+</SUP>) in the presence of structure-directing cationic cetyltrimethylammonium bromide (CTAB) surfactant micelles. Removal of the metal ion and the surfactant results in the formation of different-sized imprints within adsorbents: the pores that give the gel enhanced selectivity for the target metal ion and the cylindrical pores that give the gel an overall porosity which includes large surface areas and excellent metal ion transport kinetics. The measurement of adsorption equilibri-um and kinetics of copper ion on these adsorbents provided the high adsorption capacity and selectivity, coupled with fast kinetics, for copper ions used as templates.
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Yada M., Kuroki S., Kuroki M., Ohe K., Kijima T.
Langmuir 18 ( 22 ) 8714 - 8718 2002.10
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Langmuir
The coexistence of SO 4 2- , F - , and H 2 PO 2 - anions in the synthesis of mesostructured alumina and gallium oxides is effective for preparing porous solids with a mesostructure comprised of different inorganic frameworks depending on the degree of interaction between Al 3+ or Ga 3+ and such anions. The approach may thus be applicable to the conversion of any other mesostructured metal oxides labilized by template removal into stable mesoporous solids.
DOI： 10.1021/la020113r
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OHE Kaoru, NAKAYAMA Rie, NAKAMURA Shigeo, BABA Yoshinari
8 ( 2 ) 168 - 169 2002.7
Language：Japanese Publishing type：Research paper (scientific journal)
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FUJIMOTO Kanji, OHE Kaoru, NAKAMURA Shigeo, BABA Yoshinari, SHIMIZU Masataka, NAKASHIMA Tadao
8 ( 2 ) 170 - 171 2002.7
Language：Japanese Publishing type：Research paper (scientific journal)
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Porous yttrium aluminum oxide templated by alkyl sulfate assemblies
Yada M., Ohya M., Ohe K., Machida M., Kijima T.
Langmuir 16 ( 4 ) 1535 - 1541 2000.2
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Langmuir
Mesostructured hexagonal yttrium aluminum oxides templated by alkyl sulfate assemblies were synthesized by the homogeneous precipitation method using urea. The unit cell parameter a of the hexagonal mesophases is controllable by the alkyl chain length of the incorporated surfactant molecules as in the aluminum-based end member system, although the cell dimension of the yttrium-based system is little dependent on the alkyl chain length. The hexagonal yttrium aluminum based dodecyl sulfate mesophases with Al/(Al+Y) molar ratios of 0.54 or above were obtained as a single phase, whereas those with lower Al/(Al+Y) ratios coexisted with the yttrium-based mesophase. The Y-Al based hexagonal mesophases with 0.54 ≤ Al/(Al+Y) ≤ 0.74 were converted into an ordered porous material with a specific surface area of 662-797 m 2 g -1 by the anion exchange of alkyl sulfate surfactants with acetate ions, in contrast to the collapse of the hexagonal mesophases with Al/(Al+Y) > 0.74 by the same treatment. The much higher stability of the former hexagonal phase upon acetate treatment was attributed to the increased ratio of 6-coordinate to 4-coordinate Al polyhedra.
DOI： 10.1021/la990493p
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Durable solid products prepared by calcining Fe<inf>3</inf>O<inf>4</inf>-rich ash and glass waste
Ohe K., Kuroki S., Kijima T., Machida M.
Journal of the Ceramic Society of Japan 108 ( 7 ) 687 - 689 2000
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Journal of the Ceramic Society of Japan
Solidified ash products were obtained by mixing and heating of powdered bottom Fe 3 O 4 -rich ash and glass waste paste in an inclined rotary incinerator. The chemical composition and structure of the product were analyzed by X-ray diffraction (XRD), scanning electron microscope/energy dispersive X-ray spectrometer (SEM/EDX), Fourier transformation infrared spectroscopy (FT-IR), and X-ray photoelectron spectroscopy (XPS). The bulk sample mainly consisted of Fe 3 O 4 and NaAlSiO 4 , and glassy grain boundaries, which strongly bonded the ash to form a solid product. On the other hand, the surface of the product was covered by a Fe-free glassy layer of ∼10 μm in thickness. The glassy surface layer was effective in preventing the dissolution of heavy metals (Pb, Cr) into aqueous acid solutions (2 < pH < 7).
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Lithium-iodine intercalation in the ferroelectric layered compound butijoi
Kijima T., Kimura S., Kawahara Y., Ohe K., Yada M., Machida M.
Materials Research Society Symposium - Proceedings 547 151 - 155 1999.12
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Materials Research Society Symposium - Proceedings
The reaction of Bi-4ijO-4-x with lithium iodide under an atmosphere of iodine at 4000 was found to afford a novel intercalation compound Li-4BMTijOii. The brownish red bismuth titanate is monoclinic with the lattice parameters of a=5.7417(2), b=5.4016(2), c=36.787(1)A and 0=88.93(1) deg. The pathway to the new intercalation compound is proposed on the basis of X-ray, XPS, SEM and compositional observations. «1999 Materials Research Society.
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Intercalation of Dendritic Polyamines by α- and γ-Zirconium Phosphates
Kijima Tsuyoshi, Ohe Kaoru, Sasaki Fumie, YADA Mitsunori, MACHIDA Masato
Bulletin of the Chemical Society of Japan 71 ( 1 ) 141 - 148 1998.1
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Chemical Society of Japan
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Intercalation of Dendritic Polyamines by α and γ-Zirconium Phosphates
Kijima T., Ohe K., Sasaki F., Yada M., Machida M.
Bulletin of the Chemical Society of Japan 71 ( 1 ) 141 - 148 1998.1
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Bulletin of the Chemical Society of Japan
Tridentate polyamines, N(CH 2 CH 2 NH 2 ) 3 and N(RNH 2 ) 3 (R = CH 2 CH 2 CONHCH 2 CH 2 ), react with both α- and γ-zirconium phosphates to give an intercalated phase in which the amine molecules are fully loaded as an interdigitating monolayer with their flatted molecular planes highly titles relative to the inorganic layers. On the other hand, although hexadentate polyamine. N(RN(RNH 2 ) 2 ) 3 , forms a more expanded intercalate from its dilute solution, the longer chain amine can not be intercalated from its concentrated solution, due to the entanglement of dissolved molecules.
DOI： 10.1246/bcsj.71.141
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Yada M., Hiyoshi H., Ohe K., Machida M., Kijima T.
Inorganic Chemistry 36 ( 24 ) 5565 - 5569 1997.12
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Inorganic Chemistry
The morphologically controlled synthesis of aluminum-based surfactant mesophases by the homogeneous precipitation method using urea is demonstrated, together with a model for the templating mechanism pathway. Dodecyl sulfate surfactant initially forms a layered mesophase with an interlayer spacing of 3.5 nm in which the surfactant molecules are arranged as a bilayer between the linked sheets of aluminum oxyhydroxide groups. The aluminate sheets consist mostly of octahedral Al but contain some fraction of tetrahedral Al dependent on urea concentration. On further hydrolysis of urea, the layered mesophase is transformed into a hexagonal form through the interlayer condensation and cross-linking of the Al-OH groups in any adjacent aluminate sheets. The structural transition accompanies the rearrangement of the bilayered surfactant molecules into a rodlike assembly, followed by the additional growth into enlarged particles. The hexagonal mesophase resulting from the lamellae containing comparatively large amounts of tetrahedral Al forms a ringed or curved wormlike morphology, while the phase grown from octahedral Al-enriched forms appears in versatile patterns including spherical, funneled, and tubular particles. Such morphologically versatile characteristics of the hexagonal mesophases reflect those of their precursors produced by the folding of aluminum-based flexible sheets of aluminum oxyhydroxide octahedral groups mixed with their tetrahedral ones at a fraction dependent on urea concentration.
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Kijima T., Watanabe S., Ohe K., Machida M.
Journal of the Chemical Society, Chemical Communications ( 1 ) 75 - 76 1995.12
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Journal of the Chemical Society, Chemical Communications
The reaction of n-alkylamines C n H 2n+1 NH 2 (n=1-10) with a partially phosphated zirconium carboxyethyl-phosphonate shows that only heptylamine (n=7) is preferentially intercalated to form a bilayer, demonstrating a new class of host-guest process based on molecular assembly recognition.
DOI： 10.1039/C39950000075
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Kijima Tsuyoshi, Kato Yoshikuni, Ohe Kaoru, Machida Masato, Matsushita Yohichi, Matsui Takanao
Bulletin of the Chemical Society of Japan 67 ( 8 ) 2125 - 2129 1994
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Chemical Society of Japan
The uptake of two different types of cationic calix[4]areneoctols by Cu(II)–montmorillonite was studied at 25 °C. <i>p</i>-Aminobezylated calix[4]areneoctol <b>1</b> forms an intercalated phase in which the guest molecules are arranged as a 10.8 Å thick monolayer, with a cone-type conformation and with their cavity axes perpendicular to the inorganic layers. Thermogravimetric and copper(II) release data suggest that the calixareneoctol molecules are taken up in their divalent form and act as a prop to yield a vacant space of 42% in interlayer porosity. The molecules of dimethylammoniomethylated calix[4]areneoctol <b>2</b> are also intercalated as a monolayer, but initially in their divalent form and finally in the di- and mono-valent mixed form to fully occupy the interlayer space. The striking contrast between the two calixareneoctols as guest species is substantially due to the difference in bulkiness of their ammonio-substituted groups.
DOI： 10.1246/bcsj.67.2125
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Intercalation of (Pt(en)2)2+ and (PtCl2(en)2)2+ Ions by Na-Montmorillonite.
Kijima Tsuyoshi, Sakaguchi Kenji, Ohe Kaoru
Bulletin of the Chemical Society of Japan 67 ( 5 ) 1281 - 1285 1994
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Chemical Society of Japan
The individual and mixed uptakes of [Pt(en)<sub>2</sub>]<sup>2+</sup> and [PtCl<sub>2</sub>(en)<sub>2</sub>]<sup>2+</sup> ions by Na-montmorillonite have been studied at 25 °C. In the individual uptakes, the Pt(IV) complex ions are intercalated beyond the cation exchange capacity of the host, which is in striking contrast to the Pt(II) complex ions which are taken up through the capacity. Both complex ions are arranged as a monolayer in which their square-planar Pt<sup>II</sup>(en)<sub>2</sub> and Pt<sup>IV</sup>(en)<sub>2</sub> planes are parallel and perpendicular to the silicate layers, respectively. The uptake reaction with an equimolar solution of both complexes results in the predominant intercalation of the Pt(II) complex ions, while that with a Pt(IV)-riched mixed solution yields a co-intercalated monolayer in which the Pt(IV) complex ions are held with their square-planar planes tilted by ca. 52° with respect to the silicate layer.
DOI： 10.1246/bcsj.67.1281
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Intercalation of 2-aminoethylamino-substituted β-cyclodextrin by γ-zirconium phosphate
Kijima T., Ohe K.
Journal of the Chemical Society, Dalton Transactions ( 19 ) 2877 - 2879 1992.12
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Journal of the Chemical Society, Dalton Transactions
The uptake of [6-(2-aminoethylamino)-6-deoxy]-β-cyclodextrin (cden) by γ-zirconium phosphate Zr(HPO 4 ) 2 ·2H 2 O has been studied at 25°C. The intercalation behaviour of cden for the γ phosphate is in marked contrast to that observed previously with α-zirconium phosphate Zr(HPO 4 ) 2 ·H 2 O. The γ phosphate forms initially an intercalated phase in which the cden molecules are arranged as a bilayer of thickness 31.3 Å with cavity axes parallel to the phosphate layers. With further increase in the amount of cden added, the thickness of the intercalant layer rapidly decreases to 24.7 Å, with an accompanying appreciable decrease in the cden content.
DOI： 10.1039/DT9920002877
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Intercalation of a Trimethylammoniomethylated Calix(4)arene by Cu(II)-Montmorillonite.
Kijima Tsuyoshi, Ohe Kaoru, Shinkai Seiji, Nagasaki Takeshi
Bulletin of the Chemical Society of Japan 65 ( 9 ) 2510 - 2513 1992
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Chemical Society of Japan
The uptake of 5,11,17,23-tetrakis(trimethylammoniomethyl)-25,26,27,28-tetramethoxycalix[4]arene tetrachloride by Cu(II)-montmorillonite was examined at 25 °C. The mineral forms an intercalated phase in which the calixarene molecules are arranged as a 9.5 Å thick monolayer, with a cone-type conformation, with their cavity axes perpendicular to the silicate layers. Thermogravimetric and copper(II) release data suggest that the guest molecules are taken up in their tetra- and tri-valent forms during the initial and final uptake stages, respectively.
DOI： 10.1246/bcsj.65.2510
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22 オオムギ幼植物の各種要素欠乏とグルコサミン(九州支部講演会要旨(その2))
高木 浩, 大脇 淳一, 丸山 真理子, 大栄 薫, 村田 麻美, 長友 秀昌
日本土壌肥料学会講演要旨集 ( 34 ) 1988.3
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：一般社団法人日本土壌肥料学会