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

被引：7
|
作者：
Zeng, Jiehui [1 ]
Zeng, Jianxian [1 ]
Zhou, Hu [1 ]
Liu, Guoqing [1 ]
Yuan, Zhengqiu [1 ]
Jian, Jian [1 ]
机构：
[1] Hunan Univ Sci & Technol, Sch Chem & Chem Engn, Xiangtan 411201, Peoples R China
来源：
FRONTIERS OF CHEMICAL SCIENCE AND ENGINEERING | 2020年 / 14卷 / 06期
基金：
中国国家自然科学基金;
关键词：
ion-imprinted; nickel ion; dynamic membrane; adsorption; SOLID-PHASE EXTRACTION; CROSS-FLOW MICROFILTRATION; POWDER-ACTIVATED CARBON; WASTE-WATER TREATMENT; HEAVY-METAL IONS; SELECTIVE SEPARATION; AQUEOUS-SOLUTIONS; CERAMIC MEMBRANE; HYBRID SORBENT; LEAD IONS;
D O I：
10.1007/s11705-020-1915-z
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
An ion-imprinted sorbent (IIP) was prepared by using Ni2+ as template, 3-[2-(2-aminoethylamino) ethylamino] propyl-trimethoxysilane as functional monomer, and silica gel as carrier. The adsorption performance of IIP towards Ni2+ was investigated. IIP showed a higher adsorption capacity than that of non-imprinted sorbent, and it also exhibited high selectivity for Ni2+ in the presence of Cu2+ and Zn2+ ions. Then, IIP was used to form a dynamic membrane onto the surface of ceramic membrane for treatment of electroplating wastewater containing Ni2+. Compared with ceramic membrane, IIP dynamic membrane had much higher steady membrane flux, and also rejected Ni2+ to obtain a lower concentration of Ni2+ in the permeate fluid. Perhaps it is suitable for future practice applications.
引用
收藏
页码：1018 / 1028
页数：11
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