| 时间: 2021-03-10 | 次数: |
李啥晟, 邓天天, 张领军,等.As（ m）离子印迹聚合物的制备及其在水溶液中的吸附行为研究[J].河南理工大学学报（自然科学版）,2021,40(2):89-97.
LI H S, DENG T T, ZHANG L J,et al.Preparation of As （ m ） ion imprinted polymer and study on its adsorptionbehaviors in aqueous solution[J].Journal of Henan Polytechnic University(Natural Science) ,2021,40(2):89-97.
As（ m）离子印迹聚合物的制备及其在水溶液中的吸附行为研究
李啥晟, 邓天天, 张领军, 陈纳, 王洋洋
河南工程学院 环境与生物工程学院，河南 郑州451191
摘要:为进一步提高水中As（ m）污染物的去除效率，以纳米凹凸棒为载体，丙烯酸为功能单体，KH-560为交联剂，采用表面聚合法优化制备As（ m ）离子印迹聚合物，并探究该材料对于 水中As（ m ）的吸附特性。结果表明：在模板离子质量浓度50 mg/L，交联剂用量6 mL，pH =4 的情况下，印迹材料的吸附效果最好；该材料对水中As（ m）的吸附量比相同条件下空白印迹材料提高了 1.4倍，并且吸附量随pH升高而变大；材料吸附As（ m ）热力学符合Freundlich方程，动力学符合二级动力方程，印迹材料重复使用5次后吸附量仅降低了 8.9% ，表明印迹材料结构较稳定；在As3+和Cu2+ ，Pb2+ ，Cd2+ ，Cr6+共存的条件下，对As（ m ）有很好的选择吸附性。
关键词:砷污染;离子印迹;吸附行为;热力学;动力学
doi:10.16186/j.cnki.1673-9787.2019100047
基金项目:河南省科技攻关项目（192102310505 ）
收稿日期:2019/10/22
修回日期:2020/01/15
出版日期: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
