湿法冶金2024，Vol.43Issue(5)：566-572,7.DOI:10.13355/j.cnki.sfyj.2024.05.013
海绵状镍印迹壳聚糖吸附剂对软锰矿脱硫尾液中镍离子的选择性去除性能研究
Selective Removal of Nickel Ions from Desulphurization Tailing of Pyrolusite by Spongy Nickel-imprinted Chitosan Adsorbent
摘要
Abstract
In order to selectively remove nickel ions from the desulphurization tailing of pyrolusite and improve the purity of manganese sulfate,the spongy nickel-imprinted chitosan adsorbent Ni2+-IIP was prepared by ion imprinting method and chemical foaming method on chitosan matrix,and its competition and selective adsorption behavior in simulated binary solution were discussed.The effects of temperature,adsorption time and desulphurization tailing pH on the adsorption amount and removal rate of nickel ions and the loss rate of manganese ions in the desulphurization tailing of pyrolusite were also investigated.The results show that in the simulated binary solution,Ni2+-IIP still maintains high selectivity for nickel ions,although there is competitive adsorption between manganese and nickel ions.In the actual desulphurization tailing of pyrolusite,under the conditions of pH=5.0,adsorption temperature of 40 ℃ and adsorption time of 1 440 min,the adsorption capacity and rate of removal of Ni2 is 15.3 mg/g and 90％,respectively,and the loss rate of manganese ions is about 11％.After 5 adsorption-desorption cycles,the adsorption capacity of Ni2+-IIP for nickel ions in the desulphurization tailing reduces 13.1％,and the regeneration performance is good.Ni2+-IIP can selectively remove nickel ions from the desulphurization tailing,and purify the manganese sulfate solution.关键词
海绵状镍印迹壳聚糖吸附剂/软锰矿/离子印迹/镍/选择性/去除/吸附Key words
spongy nickel-imprinted chitosan adsorbent/pyrolusite/ionic imprinting/nickel/selectivity/removal/adsorption分类
矿业与冶金引用本文复制引用
郭娜,赵莹,刘洁岭,廖兵..海绵状镍印迹壳聚糖吸附剂对软锰矿脱硫尾液中镍离子的选择性去除性能研究[J].湿法冶金,2024,43(5):566-572,7.基金项目
四川省教育厅计划项目(16ZB0517) （16ZB0517）
四川建筑职业技术学院科技项目(2023KJ07). （2023KJ07）
