Arsenic (III,V) removal from aqueous solution by ultrafine alpha-Fe2O3 nanoparticles synthesized from solvent thermal method

doi:10.1016/j.jhazmat.2011.04.111

	Arsenic (III,V) removal from aqueous solution by ultrafine alpha-Fe2O3 nanoparticles synthesized from solvent thermal method
	Tang, Wenshu 2; Li, Qi 2; Gao, Shian 2; Shang, Jian Ku 1,2
刊名	JOURNAL OF HAZARDOUS MATERIALS
	2011-08-15
卷号	192 期号:1 页码:131-138
关键词	Arsenite Arsenate Adsorption Competing Anions Alpha-fe2o3 Nanoparticles
ISSN号	0304-3894
DOI	10.1016/j.jhazmat.2011.04.111
英文摘要	Ultrafine iron oxide (alpha-Fe2O3) nanoparticles were synthesized by a solvent thermal process and used to remove arsenic ions from both lab-prepared and natural water samples. The alpha-Fe2O3 nanoparticles assumed a near-sphere shape with an average size of about 5 nm. They aggregated into a highly porous structure with a high specific surface area of similar to 162 m(2)/g, while their surface was covered by high-affinity hydroxyl groups. The arsenic adsorption experiment results demonstrated that they were effective, especially at low equilibrium arsenic concentrations, in removing both As(III) and As(V) from lab-prepared and natural water samples. Near the neutral pH, the adsorption capacities of the alpha-Fe2O3 nanoparticles on As(III) and As(V) from lab-prepared samples were found to be no less than 95 mg/g and 47 mg/g, respectively. In the presence of most competing ions, these alpha-Fe2O3 nanoparticles maintained their arsenic adsorption capacity even at very high competing anion concentrations. Without the pre-oxidation and/or the pH adjustment, these alpha-Fe2O3 nanoparticles effectively removed both As(III) and As(V) from a contaminated natural lake water sample to meet the USEPA drinking water standard for arsenic. (C) 2011 Elsevier B.V. All rights reserved.
WOS研究方向	Engineering ; Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000293483100017
内容类型	期刊论文
源URL	[http://210.72.129.5/handle/321005/121681]
专题	中国科学院沈阳应用生态研究所
通讯作者	Li, Qi
作者单位	1.Univ Illinois, Dept Mat Sci & Engn, Urbana, IL 61801 USA 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Mat Ctr Water Purificat, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Tang, Wenshu,Li, Qi,Gao, Shian,et al. Arsenic (III,V) removal from aqueous solution by ultrafine alpha-Fe2O3 nanoparticles synthesized from solvent thermal method[J]. JOURNAL OF HAZARDOUS MATERIALS,2011,192(1):131-138.
APA	Tang, Wenshu,Li, Qi,Gao, Shian,&Shang, Jian Ku.(2011).Arsenic (III,V) removal from aqueous solution by ultrafine alpha-Fe2O3 nanoparticles synthesized from solvent thermal method.JOURNAL OF HAZARDOUS MATERIALS,192(1),131-138.
MLA	Tang, Wenshu,et al."Arsenic (III,V) removal from aqueous solution by ultrafine alpha-Fe2O3 nanoparticles synthesized from solvent thermal method".JOURNAL OF HAZARDOUS MATERIALS 192.1(2011):131-138.