Deep removal of copper from cobalt sulfate electrolyte by ion-exchange

SP-C was applied for the removal of Cu^2＋ from simulated cobalt sulfate electrolyte containing Co2＋ 50 g/L and Cu2＋ 0.5-2.0 g/L. Experimental conditions included pH of 2-4, temperature of 20-60℃ and contact time of 10-40 min. The investigation demonstrated that SP-C had recommendable efficiency in a...

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Bibliographic Details
Published in:Transactions of Nonferrous Metals Society of China 2010-08, Vol.20 (8), p.1534-1540
Main Author: 温俊杰 张启修 张贵清 曹左英
Format: Article
Language:English
Subjects:
chelating resin
China
Cobalt
cobalt sulfate electrolyte
Contact
Electrolytes
ion exchange
Nitrogen atoms
removal of copper
Sorption
Sulfates
二氧化碳
动力学方程
吸附铜
接触时间
环境温度
硫酸电解液
硫酸钴
离子交换
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Summary:SP-C was applied for the removal of Cu^2＋ from simulated cobalt sulfate electrolyte containing Co2＋ 50 g/L and Cu2＋ 0.5-2.0 g/L. Experimental conditions included pH of 2-4, temperature of 20-60℃ and contact time of 10-40 min. The investigation demonstrated that SP-C had recommendable efficiency in adsorbing Cu2＋ from the electrolyte with 25- to 100-fold of Co2＋ The optimal adsorption conditions of SP-C were pH of 4, contact time of 30 min and ambient temperature. The study also showed that the loaded resin could be effectively eluted with 2.0 mol/L H2SO4 solution at a contact time of 40 min; the peak concentration of Cu2＋ in the eluate was about 35 g/L. The sorption characteristics of Cu2＋ by SP-C could be described by Langrnuir isotherm and the pseudo second-order kinetic equation. Infrared spectra showed that nitrogen atoms in the functional group coordinated with Cu2＋ to form coordination bands.
ISSN:1003-6326
DOI:10.1016/S1003-6326(09)60334-4