水中竞争性阴离子对Fe^0除砷效率的影响研究  

Effects of Competition Anion on Arsenic Removal by Fe^0 in Aqueous Solution

作　　者：陈春宁[1] 石林[2] 刘金香[1] 谢水波[1] 

机构地区：[1]南华大学城市建设学院,湖南衡阳421001 [2]华南理工大学环境科学与工程学院,广东广州510640

出　　处：《南华大学学报（自然科学版）》2006年第4期51-54,58,共5页Journal of University of South China：Science and Technology

基　　金：湖南省教育厅科研项目(05C475)

摘　　要：本文研究水中几种无机阴离子H2PO3-、SiO33-、NO3-、SO42-、HCO3-对零价铁(Fe0)除砷效率的影响,实验结果显示:H2PO3-、SiO33-的存在会由于竞争性吸附显著降低Fe0的除砷效率,而高浓度的NO3-与SO42-可以促进Fe0对砷的去除,HCO3-对Fe0的除砷效率影响不大.The effects of inorganic anion （H2PO3^-、 SiO3^3-, NO3^- , SO4^2-,HCO3^-） competition on the removal of arsenic from drinking water by zero - valent iron （ Fe^0 ） were studied in this paper. The results of tests showed： Presence of H2 PO3^- and SiO3^3 in solution had remarkably inhibited arsenic removal while high concentration SO4^2- as well as NO3^- caused slight increase in arsenate removal. Presence of HCO3^- in aqueous solution had almost no effects on the efficiency of arsenic removal.

关 键 词：砷 零价铁 饮用水 竞争性阴离子 

分 类 号：X703.1[环境科学与工程—环境工程]