中文摘要：

铜和镉离子有选择地与锌硫酸盐被分开水的溶液或锌氨 / 铵硫酸盐由低当前的密度电解的水的答案。在锌硫酸盐答案的镉离子的集中在 8.5 h 的一电解时间从 4.56 g/L 减少了到 0.18 g/L，这被显示出，虽然它从在锌氨 / 铵硫酸盐比 0.005 g/L 降低的 5.16 g/L 减少了水的答案。在另一方面，铜的免职率是那么低的把铜和镉离子与锌氨 / 铵硫酸盐分开是困难的水的答案在电解期间。但是铜离子能被使用煤油通过溶剂抽取在这个答案减少到 0.002 g/L 冲淡的 LIX984N 作为提炼之物。因此，在铜的溶剂抽取以后由电解从锌氨 / 铵硫酸盐溶液恢复镉离子是有利的。

英文摘要：

Copper and cadmium ions were selectively separated from zinc sulphate aqueous solution or zinc ammonia/ammonium sulphate aqueous solution by low current density electrolysis.It was shown that the concentration of cadmium ion in zinc sulphate solution decreased from 4.56 g/L to 0.18 g/L in an electrolysis time of 8.5 h,whilst it decreased from 5.16 g/L to lower than 0.005 g/L in zinc ammonia/ammonium sulphate aqueous solution.On the other hand,the deposition rate of copper was so low that it was difficult to separate copper and cadmium ions from the zinc ammonia/ammonium sulphate aqueous solution during electrolysis.But copper ion could be decreased to 0.002 g/L in this solution through solvent extraction by using kerosene diluted LIX984N as extractant.Therefore,it is favorable to recover cadmium ion from the zinc ammonia/ammonium sulphate solution by electrolysis after solvent extraction of copper.