PHOTOREDUCTIVE STRIPPING OF VANADIUM IN SOLVENT EXTRACTION PROCESS FOR SEPARATION OF VANADIUM AND MOLYBDENUM
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概要
- 論文の詳細を見る
The separation of vanadium and molybdenum by solvent extraction followed by photoreductive stripping was investigated, using tri-n-octylmethylammonium chloride (TOMAC) as extractant. A low-pressure mercury lamp and a halogen lamp were used as light sources. Pentavalent vanadium was reduced photochemically to tetravalent or trivalent vanadium in organic solution as well as in aqueous solution, using isopropyl formate as a radical scavenger. The photoreduction of vanadium in TOMAC/benzene phase containing vanadyl and molybdate anions allowed the vanadium to be stripped into an aqueous phase selectively, leaving the molybdenum in the organic phase. The stripping yield of vanadium reached 100%. The separation factor of vanadium and molybdenum by single extraction followed by single selective stripping was 1000–2000 when using the mercury lamp and 170–430 when using the halogen lamp. The organic solution was not damaged by the photoreductive stripping and was reusable for repeated extraction and stripping.
- 社団法人 化学工学会の論文
- 1993-08-20
著者
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Komasawa Isao
Department of Chemical Science and Engineering, Graduate School of Engineering Science, Osaka Univer
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HIRAI TAKAYUKI
Department of Chemical Science and Engineering, Graduate School of Engineering Science, and Research
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駒沢 勲
Department Of Chemical Science And Engineering Graduate School Of Engineering Science And Research C
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Komasawa Isao
Department Of Chemical Science And Engineering Graduate School Of Engineering Science Osaka Universi
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Komasawa Isao
Department Of Chemical Engineering Osaka University
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ONOE Naohisa
Department of Chemical Engineering, Osaka University
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Onoe Naohisa
Department Of Chemical Engineering Osaka University
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Hirai Takayuki
Department Of Chemical Engineering Faculty Of Engineering Science Osaka University
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Komasawa Isao
Department Of Chemical Engineering Faculty Of Engineering Science Osaka University
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