Frontiers of Chemical Science and Engineering
>> 2020,
Volume 14,
Issue 6
doi:
10.1007/s11705-020-1915-z
RESEARCH ARTICLE
Ion-imprinted silica gel and its dynamic membrane for nickel ion removal from wastewaters
School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China
Accepted: 2020-03-13
Available online: 2020-03-13
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Abstract
An ion-imprinted sorbent (IIP) was prepared by using Ni as template, 3-[2-(2-aminoethylamino) ethylamino] propyl-trimethoxysilane as functional monomer, and silica gel as carrier. The adsorption performance of IIP towards Ni was investigated. IIP showed a higher adsorption capacity than that of non-imprinted sorbent, and it also exhibited high selectivity for Ni in the presence of Cu and Zn ions. Then, IIP was used to form a dynamic membrane onto the surface of ceramic membrane for treatment of electroplating wastewater containing Ni . Compared with ceramic membrane, IIP dynamic membrane had much higher steady membrane flux, and also rejected Ni to obtain a lower concentration of Ni in the permeate fluid. Perhaps it is suitable for future practice applications.
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