负载纳米ZnS阳离子树脂选择性去除浓锌溶液中的痕量级Cu2+和Cd2+

通过将ZnS纳米粒子负载在阳离子树脂D001中制备负载纳米ZnS阳离子树脂吸附剂，即ZnS@D001，吸附湿法冶金锌浸出液中共存杂质金属离子（如Cu2+和Cd2+）。在10 g/L Zn2+的合成溶液中实现了对Cu2+的高度优先吸附，而对Cd2+没有任何吸附效果。吸附后的ZnS@D001树脂可以被1 mol/L HNO3有效解吸，然后再次负载ZnS。同时利用含有Cu2+和Cd2+的Zn2+溶液进行固定床柱吸附测试。经过吸附处理后，可以有效去除溶液中的铜杂质，纳米ZnS树脂可作为锌冶炼行业深度净化锌液的潜在功能材料。

Selective Removal of Trace Levels of Cu2+ and Cd2+ in Concentrated Zinc Solution with Loaded Nano-ZnS Cationic Resin

Nano-ZnS loaded cationic resin adsorbent, namely ZnS@D001, was prepared by loading ZnS nanoparticles in cationic resin D001 and used to absorb coexisting impurity metal ions (such as Cu2+ and Cd2+) in hydrometallurgical zinc leaching solution. High priority adsorption of Cu2+ were achieved in 10 g/L Zn2+ synthetic solution, but there was no adsorption effect on Cd2+. The adsorbed ZnS@D001 resin can be effectively desorbed by 1 mol/L HNO3, and then loaded with ZnS again. At the same time, the fixed bed column adsorption of synthetic zinc ion solution containing Cu2+ and Cd2+ metal ion impurities were tested. After treatment, copper impurity content in effluent can be effectively removed, which can be used as a potential functional material for deep purification of zinc liquid in the zinc smelting industry.