Extraction of Precious and Base Metals with Microcapsules Containing an Extractant
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概要
- 論文の詳細を見る
The fundamental investigation on extraction of Pd(II), Pt(IV), Cr(VI), Cu(II), Ni(II) and Zn(II) from an aqueous solution by using microcapsules containing a metal extractant was investigated. As extractants, 2-ethylhexylphosphonic acid mono-2-ethylhexyl ester (EHPNA) and tri-n-octylamine loaded with hydrochloric acid (TOA-HCl) were used. The extractants were successfully encapsulated in the microcapsules during the in situ microencapsulation process. The extractability of the metals into the microcapsules was estimated from the extraction isotherm of the metals. According to the Langmuir model, the saturation amount of metal extracted and the extraction equilibrium constant were determined. The microcapsules containing EHPNA and TOA-HCl were suitable for the extraction of base metals and precious metals, respectively. It is anticipated that a reactor in which two columns packed with each microcapsule containing EHPNA and TOA-HCl are connected in series would be useful for separation and recovery of precious metals from base metals.
- 社団法人 化学工学会の論文
- 2007-01-01
著者
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KONDO Kazuo
Department of Chemical Engineering and Materials Science, Faculty of Engineering, Doshisha Universit
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ISHIHARA Morio
Department of Physics, Graduate School of Science, Osaka University
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Kondo Kazuo
Institute Of Environmental Science For Human Life Ochanomizu University
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Matsumoto Michiaki
Department Of Applied Chemistry Oita University
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Kojima Keiichi
Division Of Healthcare Science Central Research Laboratory The Nisshin Oillio Group Ltd.
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Kamio Eiji
Dep. Of Chemical Sci. And Engineering Fac. Of Engineering Sci. Kobe Univ.
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Kamio Eiji
Department Of Environmental Chemistry And Materials Okayama University
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Kondo Kazuo
Department Of Chemical Engineering And Materials Science Doshisha University
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Kondo Kazuo
Department Of Applied Chemistry Okayama University
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Kamio Eiji
Department Of Chemical Science And Engineering Faculty Of Engineering Science Kobe University
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