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Arsenic (III,V) removal from aqueous solution by ultrafine alpha-Fe2O3 nanoparticles synthesized from solvent thermal method
Tang, Wenshu1; Li, Qi1; Gao, Shian1; Shang, Jian Ku1,2
Corresponding AuthorLi, Qi(qili@imr.ac.cn)
2011-08-15
Source PublicationJOURNAL OF HAZARDOUS MATERIALS
ISSN0304-3894
Volume192Issue:1Pages:131-138
AbstractUltrafine 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.
KeywordArsenite Arsenate Adsorption Competing anions alpha-Fe2O3 nanoparticles
Funding OrganizationNational Basic Research Program of China ; Chinese Academy of Sciences ; Institute of Metal Research
DOI10.1016/j.jhazmat.2011.04.111
Indexed BySCI
Language英语
Funding ProjectNational Basic Research Program of China[2006CB601201] ; Chinese Academy of Sciences[Y0N5711171] ; Institute of Metal Research[Y0N5A111A1]
WOS Research AreaEngineering ; Environmental Sciences & Ecology
WOS SubjectEngineering, Environmental ; Engineering, Civil ; Environmental Sciences
WOS IDWOS:000293483100017
PublisherELSEVIER SCIENCE BV
Citation statistics
Cited Times:130[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/103568
Collection中国科学院金属研究所
Corresponding AuthorLi, Qi
Affiliation1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Mat Ctr Water Purificat, Shenyang 110016, Peoples R China
2.Univ Illinois, Dept Mat Sci & Engn, Urbana, IL 61801 USA
Recommended Citation
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.
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