Selective Adsorption of Metal Ions on Novel Chitosan-Supported Sulfonic Acid Resin.
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概要
- 論文の詳細を見る
A novel chitosan-supported sulfonic acid resin modified by propane sultone was prepared and the adsorption characteristics of metal ions are examined by using a crosslinked chitosan-supported sulfonic acid resin (PSC) and a crosslinked chitosan resin (CLC).<BR>In the low acidity region, the metal selectivity of PSC is similar to that of CLC. This suggested that the selectivity of PSC was attributed not to the sulfonate group but to the chitosan matrix. The role of the sulfonate is believed to be enriching the metal concentration in the neighborhood of the chitosan matrix. At the same time, since the hydrogen ion is also enriched in a thin layer near the surface of the main, the characteristic adsorption curves of PSC shift to the high pH region compared with those of CLC. The adsorption equilibrium constants of metal ion on PSC and CLC are evaluated. The maximum adsorption capacity for PSC in the case of adsorption of copper is 1.6 times that of CLC. On the other hand, in the high acidity region, the maximum adsorption capacity for PSC in the case of adsorption of palladium is lower than that for CLC because of steric hindrance.
- The Society of Chemical Engineers, Japanの論文
著者
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NAKAGAWA Shin-ichi
Department of Applied Chemistry, Faculty of Engineering, Osaka University
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Matsumoto Michiaki
Department Of Applied Chemistry Oita University
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Furukawa Isao
Department Of Molecular Science And Technology Faculty Of Engineering Doshisha University
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Yamashita Takayuki
Department Of Material Science And Technology Tokai University
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Kondo Kazuo
Department Of Applied Chemistry Okayama University
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Matsumoto Michiaki
Department of Chemical Engineering and Materials Science, Doshisha University
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Yamashita Takayuki
Department of Molecular Science and Technology Doshisha University
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Nakagawa Shin-ichi
Department of Chemical Engineering and Materials Science, Doshisha University
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