Arsenic (III,V) removal from aqueous solution by ultrafine alpha-Fe(2)O(3) nanoparticles synthesized from solvent thermal method
文献类型：期刊论文
| 作者 | W. S. Tang ; Q. Li ; S. A. Gao ; J. K. Shang |
| 刊名 | Journal of Hazardous Materials
 |
| 出版日期 | 2011 |
| 卷号 | 192期号:1页码:131-138 |
| 关键词 | Arsenite Arsenate Adsorption Competing anions alpha-Fe(2)O(3) nanoparticles drinking-water contaminated water iron-oxides adsorption hematite sorption ferrihydrite adsorbents speciation goethite |
| ISSN号 | 0304-3894 |
| 中文摘要 | Ultrafine iron oxide (alpha-Fe(2)O(3)) nanoparticles were synthesized by a solvent thermal process and used to remove arsenic ions from both lab-prepared and natural water samples. The alpha-Fe(2)O(3) 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-Fe(2)O(3) 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-Fe(2)O(3) nanoparticles maintained their arsenic adsorption capacity even at very high competing anion concentrations. Without the pre-oxidation and/or the pH adjustment, these alpha-Fe(2)O(3) 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. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/30703]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | W. S. Tang,Q. Li,S. A. Gao,et al. Arsenic (III,V) removal from aqueous solution by ultrafine alpha-Fe(2)O(3) nanoparticles synthesized from solvent thermal method[J]. Journal of Hazardous Materials,2011,192(1):131-138. |
| APA | W. S. Tang,Q. Li,S. A. Gao,&J. K. Shang.(2011).Arsenic (III,V) removal from aqueous solution by ultrafine alpha-Fe(2)O(3) nanoparticles synthesized from solvent thermal method.Journal of Hazardous Materials,192(1),131-138. |
| MLA | W. S. Tang,et al."Arsenic (III,V) removal from aqueous solution by ultrafine alpha-Fe(2)O(3) nanoparticles synthesized from solvent thermal method".Journal of Hazardous Materials 192.1(2011):131-138. |
入库方式： OAI收割
来源：金属研究所
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