Arsenic (III,V) removal from aqueous solution by ultrafine alpha-Fe2O3 nanoparticles synthesized from solvent thermal method | |
Tang, Wenshu2; Li, Qi2; Gao, Shian2; Shang, Jian Ku1,2 | |
刊名 | JOURNAL OF HAZARDOUS MATERIALS
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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. |
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