Papers - OHE Kaoru
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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.