Adsorptive removal of antibiotics from water using magneticion exchange resin

作     者：Tianyue Wang Xun Pan Weiwei Ben Jianbing Wang Pin Hou Zhimin Qiang 

作者机构：Key Laboratory of Drinking Water Science and TechnologyResearch Center for Eco-Enuironmental SciencesChinese Academy of SciencesBeijing 100085China School of Chemical and Enuironmental EngineeringBeijing CampusChina University of Mining and TechnologyBeijing 100083China Foreign Economic Cooperation OfficeMinistry of Environmental ProtectionBeijing 100035China 

出 版 物：《Journal of Environmental Sciences》 (环境科学学报（英文版）)

年 卷 期：2017年第29卷第2期

页      面：111-117页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 08[工学] 

基　　金：supported by the National Natural Science Foundation of China(No.21107127) the Ministry of Science and Technology of China(No.2012AA062606) 

主　　题：Sulfamethoxazole Tetracycline Amoxicillin Antibiotics MIEX resin Adsorption 

摘      要：The occurrence of antibiotics in the environment has recently raised serious concern regarding their potential threat to aquatic ecosystem and human health. In this study, the magnetic ion exchange（MIEX） resin was applied for removing three commonly-used antibiotics, sulfamethoxazole（SMX）, tetracycline（TCN） and amoxicillin（AMX） from *** results of batch experiments show that the maximum adsorption capacities on the MIEX resin for SMX, TCN and AMX were 789.32, 443.18 and 155.15 μg/m L at 25°C,respectively, which were 2–7 times that for the powdered activated carbon. The adsorption kinetics of antibiotics on the MIEX resin could be simulated by the pseudo-second-order model（R^2= 0.99）, and the adsorption isotherm data were well described by the Langmuir model（R^2= 0.97）. Solution p H exhibited a remarkable impact on the adsorption process and the absorbed concentrations of the tested antibiotics were obtained around the neutral p *** MIEX resin could be easily regenerated by 2 mol/L Na Cl solution and maintained high adsorption removal for the tested antibiotics after regeneration. Anion exchange mechanism mainly controlled the adsorption of antibiotic and the formation of hydrogen binding between the antibiotic and resin can also result in the increase of adsorption capacity. The high adsorption capacity, fast adsorption rate and prominent reusability make the MIEX resin a potential adsorbent in the application for removing antibiotics from water.