Papers - OHE Kaoru
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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)