Ion-imprinted silica gel and its dynamic membrane for nickel ion removal from wastewaters  

作　　者：Jiehui Zeng Jianxian Zeng Hu Zhou Guoqing Liu Zhengqiu Yuan Jian Jian 

机构地区：[1]School of Chemistry and Chemical Engineering,Hunan University of Science and Technology,Xiangtan 411201,China

出　　处：《Frontiers of Chemical Science and Engineering》2020年第6期1018-1028,共11页化学科学与工程前沿（英文版）

基　　金：the National Natural Science Foundation of China(Grant Nos.51573041 and 21776067);the Demonstration Base Project of University-Enterprise Cooperation of Hunan Province(No.145812).

摘　　要：An ion-imprinted sorbent(IIP)was prepared by using Ni^2+ as template,3-[2(2-aminoethylamino)ethylamino]propyl-trimethoxysilane as functional monomer,and silica gel as carrier.The adsorption performance of IIP towards Ni^2+ was investigated.IIP showed a higher adsorption capacity than that of non-imprinted sorbent,and it also exhibited high selectivity for Ni^2+ in the presence of Cu^2+ and Zn^2+ ions.Then,IIP was used to form a dynamic membrane onto the surface of ceramic membrane for treatment of electroplating wastewater containing Ni^2+.Compared with ceramic membrane,IIP dynamic membrane had much higher steady membrane flux,and also rejected Ni^2+ to obtain a lower concentration of Ni2+ in the permeate fluid.Perhaps it is suitable for future practice applications.

关 键 词：ion-imprinted nickel ion dynamic membrane ADSORPTION 

分 类 号：X703[环境科学与工程—环境工程]