| Oxidation of As（Ⅲ） by potassium permanganate |
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| 作者姓名： | LI N FAN Maohong Van Leeuwen Johannes Saha Basude YANG Hongqun HUANG C. P. |
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| 作者单位： | [1]Department of Civil, Construction and Environmental Engineering, Center for Sustainable Environmental Technology, Iowa State University, Ames, Iowa 50011, USA. [2]Center for Sustainable Environmental Technology, Iowa State University, Ames, Iowa 50011, USA [3]Department of Chemistry, Iowa State University, Ames, Iowa 50011, USA [4]Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta T6G 2G6, Canada [5]Department of Civil and Environmental Engineering, University of Delaware, Newark, DE 19716, USA |
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| 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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| 关 键 词： | 高锰酸钾 氧化 砷 吸附作用 PH值 |
| 收稿时间： | 20 September 2006 |
| 修稿时间： | 2006-09-202007-01-05 |
Oxidation of As(III) by potassium permanganate |
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| LI N,FAN Maohong,Van Leeuwen Johannes,Saha Basude,YANG Hongqun,HUANG C. P..Oxidation of As(III) by potassium permanganate[J].Journal of Environmental Sciences,2007,19(7):783-786. |
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| Authors: | LI N FAN Maohong Van Leeuwen Johannes Saha Basude YANG Hongqun and HUANG C P |
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| Institution: | 1. Department of Civil, Construction and Environmental Engineering, Center for Sustainable Environmental Technology,
Iowa State University, Ames, Iowa 50011, USA. E-mail: nali@iastate.edu
2. Center for Sustainable Environmental Technology, Iowa State Univ,1. Department of Civil, Construction and Environmental Engineering, Center for Sustainable Environmental Technology,
Iowa State University, Ames, Iowa 50011, USA. E-mail: nali@iastate.edu
3. Center for Sustainable Environmental Technology, Iowa State Univ,1. Department of Civil, Construction and Environmental Engineering, 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 and Department of Civil and Environmental Engineering, University of Delaware, Newark, DE 19716, USA |
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| Abstract: | 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 e ective agent for oxidation of As(III) in a wide pH
range. The pH value of tested water was not a significant factor a ecting the oxidation of As(III) by Mn(VII). 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 e ciencies 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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| Keywords: | arsenite arsenate oxidation potassium permanganate |
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