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有色金属工程:2024,(5)
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离子液体复合树脂的制备及其在镍电解液除锌中的应用研究
程少逸1, 马玉天1, 张娟1, 席海龙1, 孙源君1, 宗红星1, 郭勇2, 李亦婧2
(1.镍钴共伴生资源开发与综合利用全国重点实验室;2.中国科学院兰州化学物理研究所)
Preparation of ionic liquid composite resin and its application in removing zinc from nickel electrolyte
Cheng Shao yi1, Ma Yu tian1, Zhang Juan1, Xi Han long1, Sun Yuan jun1, Zong Hong xing1, Guo Yong2, liyijing2
(1.National Key Laboratory of Nickel-Cobalt Co-associated Resources Development and Comprehensive Utilization;2.Lanzhou Institute of Chemical and Physics Chinese Academy of Sciences)
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投稿时间:2023-11-13    修订日期:2024-02-05
中文摘要: 针对镍电解液中杂质锌的选择性分离困难,制备了一种咪唑基离子液体复合树脂。对复合树脂吸附锌氯配合离子的平衡、动力学和热力学特性、吸附选择性以及 pH、和温度对锌吸附率的影响进行研究。 结果表明,吸附符合 Freundlich 等温模型,吸附过程符合准二级动力学模型,吸附过程为放热过程温度越低时吸附率越高,树脂对锌表现出了优异的选择性,低pH的溶液条件更有利于树脂吸附锌。离子液体复合树脂对锌的饱和吸附量可达62.38 mg/L。使用该树脂处理实际镍电解液中的杂质锌,移除率最高可达到97.28%,树脂经重复再生6次后仍然能达到85%以上的锌移除率。
Abstract:An imidazolyl ionic liquid composite resin was prepared for the difficulty of selective separation of impurity zinc from nickel electrolyte. The equilibrium, kinetic and thermodynamic properties of zinc chloride ions adsorbed by composite resin and the effects of pH and temperature on the adsorption rate of zinc were studied. The results show that the adsorption conforms to the Freundlich isothermal model, and the adsorption process conforms to the quasi-second-order kinetic model. The lower the temperature of the exothermic process, the higher the adsorption rate, and the low pH solution is more conducive to the adsorption of zinc by resin. The saturated adsorption capacity of ionic liquid composite resin for zinc can reach 62.38 mg/L. When the resin is used to treat the impurity zinc in the actual nickel electrolyte, the maximum removal rate can reach 97.28%, and the resin can still reach more than 85% zinc removal rate after repeated regeneration for 6 times.
文章编号:YSJSGC20230662     中图分类号:TF81    文献标志码:
基金项目:甘肃省科技计划项目(22ZD6GC018)
引用文本:
程少逸,马玉天,张娟,席海龙,孙源君,宗红星,郭勇,李亦婧.离子液体复合树脂的制备及其在镍电解液除锌中的应用研究[J].有色金属工程,2024,(5):.

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