Photoreductive Stripping of Vanadium Using 2-Propanol as Radical Scavenger in Liquid-Liquid Extraction Process of Vanadium and Molybdenum

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

Tadashi Manabe¹  Isao Komasawa¹  Takayuki Hirai¹ 

[1] Department of Chemical Engineering, Osaka University

关键词: Liquid-Liquid Extraction;    Separation;    Vanadium;    Photochemical Reduction;    Selective Stripping;   

DOI  :  10.1252/jcej.30.268

来源: Maruzen Company Ltd

【 摘 要 】

References(8)Cited-By(1)Photoreductive stripping of V in a liquid-liquid extraction process for separation of V and Mo was investigated. A halogen lamp or a low-pressure mercury lamp was used as a light source and 2-propanol was used as an OH radical scavenger. The pentavalent V was photoreduced to V(IV) and stripped selectively from tri-n-octylmethylammonium chloride (TOMAC)/benzene organic phase into HCl-NaCl aqueous phase. The separation factor of 170–250 was obtained by a single extraction-stripping process. The equilibrium relationship in the course of the stripping process was also investigated. The scheme of photoreductive stripping of V was formulated, taking the photoreduction in aqueous phase into consideration.

【 授权许可】

Unknown