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Separation of Na 3 VO 4 and Na 2 CrO 4 from high alkalinity solutions by solvent extraction

文献类型：期刊论文

作者Feng, Man1,2,3; Wenzel, Marco3; Wang, Shaona1; Du, Hao1,2; Zhang, Yi2; Weigand, Jan J.3
刊名SEPARATION AND PURIFICATION TECHNOLOGY
出版日期2021-01-15
卷号255页码:8
关键词Na3VO4 Na2CrO4 Aliquat 336 TBP Solvent extraction
ISSN号1383-5866
DOI10.1016/j.seppur.2020.117282
英文摘要Purification of vanadium products by removal of chromium compounds, especially at high pH, remains a challenging task. In this contribution, purification of sodium vanadate solutions by selective solvent extraction of Cr(VI) from strong alkaline aqueous solution (initial pH 12 and above) was investigated, and the mechanisms governing the selectivity of quaternary ammonium salt Aliquat 336 were studied and discussed in detail. The influence of critical technological parameters including pH of the feed solution, added modifier, diluent, and contact time were examined and analyzed systematically. The experiments reveal a high extraction power for Cr (IV) using Aliquat 336 in the presence of TBP, realizing no extraction of V(V) under optimized condition. Stripping of Cr(VI) from the loaded organic phase was furthermore evaluated. The present work highlights a new approach to separate Cr(VI) from strong alkaline solution with a high degree of selectivity which enables the achievement of a high purity sodium vanadate.
资助项目China Scholarship Council (CSC)[201504910560] ; Sino-German Collaboration[51761135108] ; Sino-German Collaboration[392417756] ; S&T Program of Hebei[19044011Z]
WOS研究方向Engineering
语种英语
WOS记录号WOS:000633045800004
出版者ELSEVIER
资助机构China Scholarship Council (CSC) ; Sino-German Collaboration ; S&T Program of Hebei
源URL[http://ir.ipe.ac.cn/handle/122111/48118]  
专题中国科学院过程工程研究所
通讯作者Du, Hao; Weigand, Jan J.
作者单位1.Chinese Acad Sci, CAS Key Lab Green Proc & Engn, Inst Proc Engn, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Tech Univ Dresden, Fac Chem & Food Chem, D-01062 Dresden, Germany
推荐引用方式
GB/T 7714		 Feng, Man,Wenzel, Marco,Wang, Shaona,et al. Separation of Na 3 VO 4 and Na 2 CrO 4 from high alkalinity solutions by solvent extraction[J]. SEPARATION AND PURIFICATION TECHNOLOGY,2021,255:8.
APA Feng, Man,Wenzel, Marco,Wang, Shaona,Du, Hao,Zhang, Yi,&Weigand, Jan J..(2021).Separation of Na 3 VO 4 and Na 2 CrO 4 from high alkalinity solutions by solvent extraction.SEPARATION AND PURIFICATION TECHNOLOGY,255,8.
MLA Feng, Man,et al."Separation of Na 3 VO 4 and Na 2 CrO 4 from high alkalinity solutions by solvent extraction".SEPARATION AND PURIFICATION TECHNOLOGY 255(2021):8.

入库方式： OAI收割

来源：过程工程研究所

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