Regeneration of the ionic liquid tetraoctylammonium oleate after metal extraction

被引：16

作者：

Parmentier, Dries ^{[1
,2
]}

Valia, Yash A. ^{[1
]}

Metz, Sybrand J. ^{[1
]}

Burheim, Odne S. ^{[1
,3
]}

Kroon, Maaike C. ^{[2
]}

机构：

[1] Wetsus, European Ctr Excellence Sustainable Water Technol, NL-8911 MA Leeuwarden, Netherlands

[2] Eindhoven Univ Technol, Dept Chem Engn & Chem, Separat Technol Grp, NL-5612 AZ Eindhoven, Netherlands

[3] HiST Sor Trondelag Univ Coll, Dept Elect & Comp Engn, N-7004 Trondheim, Norway

来源：

HYDROMETALLURGY | 2015年 / 158卷

关键词：

Ionic liquid regeneration after metal extraction; Tetraoctylammonium oleate; Electro-deposition; Chemical regeneration; Stripping; Sodium oxalate; SELECTIVE EXTRACTION; AQUEOUS-SOLUTIONS; NDFEB MAGNETS; MOLTEN-SALTS; RARE-EARTHS; REMOVAL; ELECTRODEPOSITION; ZINC(II); WATER;

D O I：

10.1016/j.hydromet.2015.10.006

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Ionic liquids (Ils) have been presented as suitable candidates for metal extraction in the hydrometallurgy. It has already been proven that they have an adjustable selectivity towards metal ions. However, industrial applications of ILs are often limited due to their high price. Therefore, regeneration and reuse of ILs is necessary. In this study the regeneration of the fatty acid based IL tetraoctylammonium oleate was investigated, because in previous study excellent metal salt extraction efficiencies were obtained with this benign IL Two methods for regeneration were investigated, i.e. electro-deposition and chemical regeneration. Electro-deposition turned out to be unfeasible for this IL. Chemical regeneration showed that the metal ions (Zn, Co and Mn) can be selectively back-extracted, so that metals can also be separated from each other in this step. The best stripping solution was aqueous sodium oxalate, which allowed the IL to be reused with no further treatment. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：56 / 60

页数：5

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