| Adsorption behavior and mechanism of arsenate at Fe-Mn binary oxide/water interface | |
Zhang, Gaosheng1,2 ; Liu, Huijuan1; Liu, Ruiping1; Qu, Jiuhui1
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| 发表期刊 | JOURNAL OF HAZARDOUS MATERIALS
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| ISSN | 0304-3894 |
| 2009-09-15 | |
| 卷号 | 168期号:2-3页码:820-825 |
| 关键词 | Fe-mn Binary Oxide Arsenate Adsorption Mechanism Specific Adsorption |
| 产权排序 | Chinese Acad Sci, State Key Lab Environm Aquat Chem, Ecoenvironm Sci Res Ctr;Chinese Acad Sci, Yantai Inst Coastal Zone Res Sustainable Dev |
| 通讯作者 | Qu, JH, Chinese Acad Sci, State Key Lab Environm Aquat Chem, Ecoenvironm Sci Res Ctr, POB 2871, Beijing 100085, Peoples R China |
| 作者部门 | 污染过程与控制实验室 |
| 英文摘要 | Preliminary study revealed that a prepared Fe-Mn binary oxide adsorbent with a Fe:Mn molar ratio of 3:1 was more effective for As(V) removal than pure amorphous FeOOH, which MS unanticipated. In this paper, the As(V) adsorption capacities of Fe-Mn binary oxide and amorphous FeOOH were compared in detail. Furthermore, the adsorption behaviors as well as adsorption mechanism of As(V) at the Fe-Mn binary oxide/water interface were investigated. The higher uptake of As(V) by the Fe-Mn binary oxide may be due to its higher surface area (265 m(2)/g) and pore volume (0.47 cm(3)/g) than those of amorphous FeOOH. The As(V) adsorption process on the Fe-Mn binary oxide is endothermic and the increase of temperature is favoring its adsorption. A slight increase in the As(V) adsorption was observed with increasing ionic strength of the solution, which indicated that As(V)anions might form inner-sphere surface complexes at the oxide/water interface. The Zeta potential along with FTIR analysis confirmed further the formation of inner-sphere surface complexes between As(V) anions and the surface of Fe-Mn binary oxide. In addition, the influences of coexisting ions such as phosphate, bicarbonate, silicate, sulfate, chloride, calcium and magnesium which are generally present in groundwater on As(V) adsorption were examined. Among the tested anions, chloride and sulfate had no significant effect on As(V) removal, silicate decreased obviously the As(V) removal, while phosphate caused the greatest percentage decrease in As(V) adsorption. On the contrary, the presence of cations of Ca(2+) and Mg(2+) enhanced the adsorption of As(V). (C) 2009 Elsevier B.V. All rights reserved. |
| 文章类型 | Article |
| 资助机构 | Funds for Creative Research Groups of China [50621804]; National Natural Science Foundation of China [20577063] |
| 收录类别 | SCI |
| 语种 | 英语 |
| 关键词[WOS] | OXIDE ADSORBENT ; SURFACE-CHEMISTRY ; NATURAL-WATERS ; REMOVAL ; ARSENITE ; SORPTION ; HYDROXIDE ; ANIONS |
| 研究领域[WOS] | Engineering ; Environmental Sciences & Ecology |
| WOS记录号 | WOS:000268200700035 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.yic.ac.cn/handle/133337/3514 |
| 专题 | 中国科学院海岸带环境过程与生态修复重点实验室_污染过程与控制实验室 |
| 作者单位 | 1.Chinese Acad Sci, State Key Lab Environm Aquat Chem, Ecoenvironm Sci Res Ctr, Beijing 100085, Peoples R China 2.Chinese Acad Sci, Yantai Inst Coastal Zone Res Sustainable Dev, Yantai 264003, Shandong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Gaosheng,Liu, Huijuan,Liu, Ruiping,et al. Adsorption behavior and mechanism of arsenate at Fe-Mn binary oxide/water interface[J]. JOURNAL OF HAZARDOUS MATERIALS,2009,168(2-3):820-825. |
| APA | Zhang, Gaosheng,Liu, Huijuan,Liu, Ruiping,&Qu, Jiuhui.(2009).Adsorption behavior and mechanism of arsenate at Fe-Mn binary oxide/water interface.JOURNAL OF HAZARDOUS MATERIALS,168(2-3),820-825. |
| MLA | Zhang, Gaosheng,et al."Adsorption behavior and mechanism of arsenate at Fe-Mn binary oxide/water interface".JOURNAL OF HAZARDOUS MATERIALS 168.2-3(2009):820-825. |
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