Simultaneous removal of arsenate and arsenite by a nanostructured zirconium-manganese binary hydrous oxide: Behavior and mechanism
Zhang, Gaosheng1,2,3; Khorshed, Alam1; Chen, J. Paul1
发表期刊JOURNAL OF COLLOID AND INTERFACE SCIENCE
ISSN0021-9797
2013-05-01
卷号397页码:137-143
关键词Zr-mn Binary Hydrous Oxide Arsenate Arsenite Adsorption Oxidation
产权排序[Zhang, Gaosheng; Khorshed, Alam; Chen, J. Paul] Natl Univ Singapore, Dept Civil & Environm Engn, Singapore 117576, Singapore; [Zhang, Gaosheng] Chinese Acad Sci, Yantai Inst Coastal Zone Res YIC, Key Lab Coastal Zone Environm Proc, Yantai 264003, Shandong, Peoples R China; [Zhang, Gaosheng] Shandong Prov Key Lab Coastal Zone Environm Proc, Yantai 264003, Shandong, Peoples R China
通讯作者Zhang, GS (reprint author), Natl Univ Singapore, Dept Civil & Environm Engn, 1 Engn Dr 2, Singapore 117576, Singapore. gszhang@yic.ac.cn ; paulchen@nus.edu.sg
作者部门中科院海岸带环境过程与生态修复重点实验室
英文摘要Arsenate and arsenite typically co-exist in groundwater. Arsenite is more toxic than arsenate, while it is more difficult to be removed than arsenate. In order to effectively remove arsenate and arsenite simultaneously from water solution, a nanostructured zirconium-manganese binary hydrous oxide was successfully developed in this study. The amorphous sorbent was aggregate of nanoparticles with a high surface area of 213 m(2) g(-1). Our sorption experiments showed that the nano-scale particles could effectively oxidize As(III) to As(V) and greatly remove both As(V) and As(III). The maximal adsorption capacities of As(V) and As(III) were 80 and 104 mg g(-1) at pH 5.0, respectively. As(V) uptake may be mainly achieved through replacement of hydroxyl groups and sulfate anions on the surface of the oxide and formation of inner complexes. The As(III) removal was essentially due to a sorption coupled with oxidation process; the MnO2 was mainly responsible for oxidization of As(III) to As(V) that was subsequently adsorbed onto ZrO2. (C) 2012 Elsevier Inc. All rights reserved.; Arsenate and arsenite typically co-exist in groundwater. Arsenite is more toxic than arsenate, while it is more difficult to be removed than arsenate. In order to effectively remove arsenate and arsenite simultaneously from water solution, a nanostructured zirconium-manganese binary hydrous oxide was successfully developed in this study. The amorphous sorbent was aggregate of nanoparticles with a high surface area of 213 m(2) g(-1). Our sorption experiments showed that the nano-scale particles could effectively oxidize As(III) to As(V) and greatly remove both As(V) and As(III). The maximal adsorption capacities of As(V) and As(III) were 80 and 104 mg g(-1) at pH 5.0, respectively. As(V) uptake may be mainly achieved through replacement of hydroxyl groups and sulfate anions on the surface of the oxide and formation of inner complexes. The As(III) removal was essentially due to a sorption coupled with oxidation process; the MnO2 was mainly responsible for oxidization of As(III) to As(V) that was subsequently adsorbed onto ZrO2. (C) 2012 Elsevier Inc. All rights reserved.
文章类型Article
资助机构National Research Foundation of Singapore [R-302-000-026-281]; National Natural Science Foundation of China [51178453]
收录类别SCI
语种英语
关键词[WOS]TITANIUM-DIOXIDE ; IRON-OXIDE ; ADSORPTION ; AS(III) ; ADSORBENT ; AS(V) ; SORPTION ; SURFACE ; XPS ; SPECTROSCOPY
研究领域[WOS]Chemistry
WOS记录号WOS:000316776600018
引用统计
被引频次:55[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.yic.ac.cn/handle/133337/6670
专题中国科学院海岸带环境过程与生态修复重点实验室
中国科学院海岸带环境过程与生态修复重点实验室_污染过程与控制实验室
作者单位1.Natl Univ Singapore, Dept Civil & Environm Engn, Singapore 117576, Singapore
2.Chinese Acad Sci, Yantai Inst Coastal Zone Res YIC, Key Lab Coastal Zone Environm Proc, Yantai 264003, Shandong, Peoples R China
3.Shandong Prov Key Lab Coastal Zone Environm Proc, Yantai 264003, Shandong, Peoples R China
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Zhang, Gaosheng,Khorshed, Alam,Chen, J. Paul. Simultaneous removal of arsenate and arsenite by a nanostructured zirconium-manganese binary hydrous oxide: Behavior and mechanism[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE,2013,397:137-143.
APA Zhang, Gaosheng,Khorshed, Alam,&Chen, J. Paul.(2013).Simultaneous removal of arsenate and arsenite by a nanostructured zirconium-manganese binary hydrous oxide: Behavior and mechanism.JOURNAL OF COLLOID AND INTERFACE SCIENCE,397,137-143.
MLA Zhang, Gaosheng,et al."Simultaneous removal of arsenate and arsenite by a nanostructured zirconium-manganese binary hydrous oxide: Behavior and mechanism".JOURNAL OF COLLOID AND INTERFACE SCIENCE 397(2013):137-143.
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