环境工程学报2024，Vol.18Issue(11)：3348-3359,12.DOI:10.12030/j.cjee.202403051
汞(Ⅱ)离子印迹聚合物的制备及其吸附性能
Preparation and adsorption performance research of mercury(Ⅱ)ion-imprinted polymer
摘要
Abstract
Hg(Ⅱ)as the template ion,allyl thiourea as a functional monomer,N,N-dimethylformamide as crosslinker,methanol as solvent,and scanning electron microscopy(SEM),X-ray photoelectron spectroscopy(XPS),specific surface area(BET),infrared spectroscopy(FT-IR),investigated the morphology,chemical components of Hg-IIP and the adsorption characteristics of Hg(Ⅱ),and studied the treatment effect of actual sludge and river sediment.The results showed that the average particle size of Hg-IIP was 250 nm,with a specific surface area of 99.762 m2·g-1.The maximum saturated adsorption capacity of Hg-IIP for Hg(Ⅱ)was 62.92 mg g-1,and adsorption equilibrium could be reached within 3 hours.The adsorption process followed the Langmuir model and quasi second order kinetic model,indicating that the adsorption of Hg(Ⅱ)by Hg-IIP was mainly single-layer adsorption with chemical adsorption.During the adsorption process,there was little pH interference,and even in the presence of multiple heavy metal ions,Hg-IIP still had a good adsorption effect on Hg(Ⅱ).Applied to actual samples,the removal rate of mercury in sludge can reach 90％.This study provides important methodological basis for subsequent research on the removal of mercury from sludge.关键词
离子印迹技术/Hg(Ⅱ)印迹聚合物/吸附性能/污泥Key words
ion imprinting technology/mercury ion printing polymer/adsorption performance/sludge分类
资源环境引用本文复制引用
陈俊,杨世童,王凯月,郭剑波,李敏,冯钦忠..汞(Ⅱ)离子印迹聚合物的制备及其吸附性能[J].环境工程学报,2024,18(11):3348-3359,12.基金项目
国家重点研发计划资助项目(2016YFC0209204) （2016YFC0209204）
