Selective Uptake and Recovery of Palladium by Biopolymer Microcapsules Enclosing Cyanex 302 Extractant
スポンサーリンク
概要
- 論文の詳細を見る
Selective uptake and recovery of platinum group metals are an important subject in the high level liquid waste treatment. An extractant having a strong affinity for palladium, bis(2,4,4-trimethylpentyl) monothiophosphinic acid (Cyanex 302, HA), was enclosed into microcapsules by utilizing highly immobilizing ability of biopolymer (alginate and alginic acid gel polymers). The uptake of Pd2+, Ru(NO)3+ and Rh3+ for granular microcapsules has been studied by batch and column methods. A relatively large distribution coefficient of Pd2+, Kd,Pd, of above 104 cm3/g was obtained in the presence of 0.2–0.5 M HNO3 and the separation factors of Pd/Ru and Pd/Rh were estimated to be above 102. The uptake of Pd2+ on microcapsules followed a Langmuir-type uptake isotherm and the maximum uptake capacity was estimated to be 0.72–0.96 mmol/g. These metal cations were chromatographically separated through the column packed with HA-alginate microcapsules.
- 社団法人 日本原子力学会の論文
- 2001-05-25
著者
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AKIBA Kenichi
Institute for Advanced Materials Processing, Tohoku University
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Ohta Hirokazu
Institute Of Multidisciplinary Research For Advanced Materials. Tohoku University
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OHTA Hiroshi
Institute of Space and Astronautical Science
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Akiba K
Institute Of Multidisciplinary Research For Advanced Materials. Tohoku University
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Akiba Kenichi
Institute For Advanced Materials Processing Tohoku University
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MIMURA Hitoshi
Institute of Multidisciplinary Research for Advanced Materials, Tohoku University
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ONODERA Yoshio
National Institute of Advanced Industrial Science and Technology
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Onodera Y
National Inst. Advanced Industrial Sci. And Technol. Sendai
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Mimura H
Tohoku Univ. Sendai
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Mimura Hitoshi
Institilte Of Multidisciplinary Research For Advanced Materials Tohoku University
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Ohta H
Institute Of Multidisciplinary Research For Advanced Materials. Tohoku University
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Ohta Hiroshi
Institute For Solid State Physics University Of Tokyo
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