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Removal of phosphate from water by a Fe-Mn binary oxide adsorbent
文献类型：期刊论文
| 作者 | Zhang, Gaosheng1,2 ; Liu, Huijuan1; Liu, Ruiping1; Qu, Jiuhui1
|
| 刊名 | JOURNAL OF COLLOID AND INTERFACE SCIENCE
 |
| 出版日期 | 2009-07-15 |
| 卷号 | 335期号:2页码:168-174 |
| 关键词 | Fe-mn Binary Oxide Phosphate Removal Mechanism Specific Adsorption |
| ISSN号 | 0021-9797 |
| 产权排序 | Chinese Acad Sci, Ecoenvironm Sci Res Ctr, State Key Lab Environm Aquat Chem;Chinese Acad Sci, Yantai Inst Coastal Zone Res Sustainable Dev |
| 通讯作者 | Qu, JH, Chinese Acad Sci, Ecoenvironm Sci Res Ctr, State Key Lab Environm Aquat Chem, POB 2871, Beijing 100085, Peoples R China |
| 文献子类 | Article |
| 英文摘要 | Phosphate removal is important in the control of eutrophication of water bodies and adsorption is one of the promising approaches for this purpose. A Fe-Mn binary oxide adsorbent with a Fe/Mn molar ratio of 6:1 for phosphate removal was synthesized by a simultaneous oxidation and coprecipitation process. Laboratory experiments were carried out to investigate adsorption kinetics and equilibrium, in batch mode. The effects of different experimental parameters, namely contact time, initial phosphate concentration, solution pH, and ionic strength on the phosphate adsorption were investigated. The adsorption data were analyzed by both Freundlich and Langmuir isotherm models and the data were well fit by the Freundlich isotherm model. Kinetic data correlated well with the pseudo-second-order kinetic model, suggesting that the adsorption process might be chemical sorption. The maximal adsorption capacity was 36 mg/g at pH 5.6. The phosphate adsorption was highly pH dependent. The effects of anions such as Cl(-), SO(4)(2-), and CO(3)(2-) on phosphate removal were also investigated. The results suggest that the presence of these ions had no significant effect on phosphate removal. The phosphate removal was mainly achieved by the replacement of surface hydroxyl groups by the phosphate species and formation of inner-sphere surface complexes at the water/oxide interface. In addition, the adsorbed phosphate ions can be effectively desorbed by dilute NaOH solutions. This adsorbent, with large adsorption capacity and high selectivity, is therefore a very promising adsorbent for the removal of phosphate ions from aqueous solutions. (C) 2009 Elsevier Inc. All rights reserved. |
| 学科主题 | Chemistry, Physical |
| URL标识 | 查看原文 |
| WOS关键词 | WASTE-WATER ; PHOSPHORUS REMOVAL ; FLY-ASH ; RED MUD ; ADSORPTION ; IRON ; SOILS ; MECHANISMS ; GOETHITE ; SORBENTS |
| WOS研究方向 | Chemistry |
| 语种 | 英语 |
| WOS记录号 | WOS:000266644000002 |
| 资助机构 | Funds for Creative Research Groups of China [50621804]; National Natural Science Foundation of China [20577063] |
| 公开日期 | 2011-07-05 |
| 源URL | [http://ir.yic.ac.cn/handle/133337/3545]  |
| 专题 | 烟台海岸带研究所_污染过程与控制实验室 |
| 作者单位 | 1.Chinese Acad Sci, Ecoenvironm Sci Res Ctr, State Key Lab Environm Aquat Chem, 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. Removal of phosphate from water by a Fe-Mn binary oxide adsorbent[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE,2009,335(2):168-174. |
| APA | Zhang, Gaosheng,Liu, Huijuan,Liu, Ruiping,&Qu, Jiuhui.(2009).Removal of phosphate from water by a Fe-Mn binary oxide adsorbent.JOURNAL OF COLLOID AND INTERFACE SCIENCE,335(2),168-174. |
| MLA | Zhang, Gaosheng,et al."Removal of phosphate from water by a Fe-Mn binary oxide adsorbent".JOURNAL OF COLLOID AND INTERFACE SCIENCE 335.2(2009):168-174. |
入库方式： OAI收割
来源：烟台海岸带研究所
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