Arsenic(V)removal from groundwater by GE-HL nanofiltration membrane:effects of arsenic concentration,pH,and co-existing ions

作     者：Xiaowei WANG Wenjun LIU Desheng LI Weifang MA 

作者机构：School of Environmental and Municipal EngineeringLanzhou Jiaotong UniversityLanzhou 730070China Department of Environmental Science and EngineeringTsinghua UniversityBeijing 100084China School of Civil Engineering and ArchitectureBeijing Jiaotong UniversityBeijing 100044China 

出 版 物：《Frontiers of Environmental Science & Engineering》 (环境科学与工程前沿（英文）)

年 卷 期：2009年第3卷第4期

页      面：428-433页

核心收录：

学科分类：081803[工学-地质工程] 08[工学] 0818[工学-地质资源与地质工程] 

基　　金：the Alcoa fund and Beijing Municipal Science and Technology Commission(Z0006345000091) 

主　　题：nanofiltration(NF) rejection rate co-existing ion co-ion counter-ion 

摘      要：A laboratory-scale investigation was performed to study arsenic(As(V))removal by negatively charged GE-HL nanofiltration(NF)membrane in simulated drinking *** of As(V)concentration(0–200μg·L–1),pH,and co-ions and counter-ions were *** NF membrane presented good stability,and the rejection rates exceeded 90%.The rejection rates of As(V)decreased with the increase of As(V)concentration,while it increased with the increase of pH(reached 96%at pH 6.75).Moreover,a negative relationship was observed between the co-existing ions of Cl^(–),Na^(+),SO_(4)^(2–),and Ca^(2+)and the removal of As(V),in which bivalent ions presented more significant effects than monovalent ions.