Separation of nickel from cobalt using electrodialysis in the presence of EDTA

被引：55

作者：

Chaudhary, AJ ^{[1
]}

Donaldson, JD ^{[1
]}

Grimes, SM ^{[1
]}

Yasri, NG ^{[1
]}

机构：

[1] Brunel Univ, Dept Mat Engn, Environm Res Ctr, Uxbridge UB8 3PH, Middx, England

来源：

JOURNAL OF APPLIED ELECTROCHEMISTRY | 2000年 / 30卷 / 04期

关键词：

cobalt; EDTA; electrodialysis; nickel; separation;

D O I：

10.1023/A:1003966132167

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Optimum conditions are determined for the removal of nickel from cobalt solutions by electrodialysis exploiting the greater stability of the EDTA complex with nickel. The Ni-(EDTA)(2-) complex and hydrated Co2+ ions are transferred from the feed solution to the electrodialysis anolyte and catholyte chambers, respectively. A three compartment cell is required to prevent the transfer of hydrated Ni2+ from the anolyte chamber as the EDTA present is destroyed at the anode. Complete removal of nickel from cobalt can be achieved but there is a compromise between cobalt purity and the percentage of cobalt transferred to the catholyte chamber for recovery.

引用

页码：439 / 445

页数：7

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