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Oxidation of As(Ⅲ) by potassium permanganate

Oxidation of As(Ⅲ) by potassium permanganate

作     者:LI Na FAN Maohong Van Leeuwen Johannes Saha Basudeb YANG Hongqun HUANG C. P. 

作者机构:Department of Civil Construction and Environmental Engineering Center for Sustainable Environmental Technology Iowa State University Ames Iowa 50011 USA. Center for Sustainable Environmental Technology Iowa State University Ames Iowa 50011 USA Department of Chemistry Iowa State University Ames Iowa 50011 USA Department of Chemical and Materials Engineering University of Alberta Edmonton Alberta T6G 2G6 Canada Department of Civil and Environmental Engineering University of Delaware Newark DE 19716 USA 

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

年 卷 期:2007年第19卷第7期

页      面:783-786页

核心收录:

学科分类:081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 070301[理学-无机化学] 

主  题:arsenite arsenate oxidation potassium permanganate 

摘      要:The oxidation of As(Ⅲ) with potassium permanganate was studied under conditions including pH, initial As(Ⅲ) concentration and dosage of Mn(Ⅶ). The results have shown that potassium permanganate was an effective agent for oxidation of As(Ⅲ) in a wide pH range. The pH value of tested water was not a significant factor affecting the oxidation of As(Ⅲ) by Mn(Ⅲ). Although theoretical redox analyses suggest that Mn(Ⅶ) should have better performance in oxidization of As(Ⅲ) within lower pH ranges, the experimental results show that the oxidation efficiencies of As(Ⅲ) under basic and acidic conditions were similar, which may be due to the adsorption of As(Ⅲ) on the Mn(OH)2 and MnO2 resulting from the oxidation of As(Ⅲ).

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