Simultaneous removal of arsenate and arsenite by a nanostructured zirconium-manganese binary hydrous oxide: Behavior and mechanism

CORC > 烟台海岸带研究所 > 中国科学院烟台海岸带研究所 > 中科院海岸带环境过程与生态修复重点实验室

	Simultaneous removal of arsenate and arsenite by a nanostructured zirconium-manganese binary hydrous oxide: Behavior and mechanism
	Zhang, Gaosheng1,2,3 ; Khorshed, Alam 1; Chen, J. Paul 1
刊名	JOURNAL OF COLLOID AND INTERFACE SCIENCE
	2013-05-01
卷号	397 页码:137-143
关键词	Zr-mn Binary Hydrous Oxide Arsenate Arsenite Adsorption Oxidation
ISSN号	0021-9797
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
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
文献子类	Article
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.
学科主题	Chemistry, Physical
URL标识	查看原文
WOS关键词	TITANIUM-DIOXIDE ; IRON-OXIDE ; ADSORPTION ; AS(III) ; ADSORBENT ; AS(V) ; SORPTION ; SURFACE ; XPS ; SPECTROSCOPY
WOS研究方向	Chemistry
语种	英语
WOS记录号	WOS:000316776600018
资助机构	National Research Foundation of Singapore [R-302-000-026-281]; National Natural Science Foundation of China [51178453]
公开日期	2013-08-15
内容类型	期刊论文
源URL	[http://ir.yic.ac.cn/handle/133337/6671]
专题	烟台海岸带研究所_中科院海岸带环境过程与生态修复重点实验室烟台海岸带研究所_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
推荐引用方式 GB/T 7714	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.