doi:10.16186/j.cnki.1673-9787.2019100047

Received:2019/10/22

Revised:2020/01/15

Published:2021/03/15

Preparation of As （ m ） ion imprinted polymer and study on its adsorptionbehaviors in aqueous solution

LI Hansheng, DENG Tiantian, ZHANG Lingjun, CHEN Na, WANG Yangyang

School of Environmental Biological Engineering， Henan University of Engineering， Zhangzhou 451191 ， Henan， China

Abstract:In order to further improve the removal efficiency of arsenic pollutants in water， an arsenic ion-imprinted polymer was prepared by surface polymerization with nano-attapulgite as carrier， acrylic acid as functional monomer and KH-560 as crosslinking agent， the adsorption characteristics of As （ m ） in water were also investigated. The results showed that when the concentration of template ion was 50 mg ， L 1 ， the dosage of crosslinking agent was 6 ml and pH = 4 ， the adsorption effect of imprinting material was the best ； The adsorption amount of As （ m ） in water was 1.4 times higher than that of the blank imprinting material under the same condition， and the adsorption amount increased with the increase of pH ； The thermodynamics of material adsorption As （III） conformed to freundlich equation， the kinetics conformed to the second-order dynamic equation ， the adsorption of imprinted material decreased by only 8.9% after repeated use for 5 times， which indicated that the imprinted material was stable in structure. In addition， this ion imprinted polymer had good selective adsorption of As" than Cu2+ ，Pb2 ，Cd2+ ，Cr6+ under coexisting environmental conditions.

Key words:arsenic pollution;ion imprinting;adsorption behavior;thermodynamics;kinetics

 As_离子印迹聚合物的制备及其在水溶液中的吸附行为研究_李晗晟.pdf