Fabrication, Characterization, and Application of a Composite Adsorbent for Simultaneous Removal of Arsenic and Fluoride
文献类型：期刊论文
| 作者 | Jing, Chuanyong ; Cui, Jinli ; Huang, Yuying ; Li, Aiguo |
| 刊名 | Science & Technology - Other Topics; Materials Science
 |
| 出版日期 | 2012 |
| 卷号 | 4期号:2页码:714-720 |
| 关键词 | arsenic fluoride simultaneous removal synchrotron-based techniques molecular level mechanisms |
| ISSN号 | 1944-8244 |
| 中文摘要 | Coexisting arsenic (As) and fluoride (F) in groundwater poses severe health risks worldwide. Highly efficient simultaneous removal of As and F is therefore of great urgency and high priority. The purpose of this study was to fabricate a novel. composite adsorbent and explore the mechanism for concurrent removal of As(V) and F at the molecular level. This bifunctional adsorbent with titanium and lanthanum oxides impregnated on granular activated carbon (TLAC) exhibits a pronounced As(V) and F adsorption capacity over commercially available iron- and aluminum-based adsorbents for synthetic and real contaminated groundwater samples. Synchrotron-based X-ray microfluorescence analysis demonstrates, that and Ti were homogeneously distributed on TLAC. Extended X-ray absorption fine structure spectroscopic results suggest that As(V) formed bidentate binuclear surface complex as evidenced by an averaged Ti-As bond distance of 3.34 angstrom in the presence of F. Adsorption tests and Fourier transform infrared spectroscopy analysis indicate that F was selectively adsorbed on lanthanum oxides. The surface configurations constrained with the spectroscopic results were formulated in the charge distribution multisite complexation model to describe the competitive adsorption behaviors of As(V) and F. The results of this study indicate that TLAC could be used as an effective adsorbent for simultaneous removal of As(V) and F. |
| WOS记录号 | WOS:000300644500032 |
| 公开日期 | 2014-11-27 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/8053]  |
| 专题 | 生态环境研究中心_环境化学与生态毒理学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Jing, Chuanyong,Cui, Jinli,Huang, Yuying,et al. Fabrication, Characterization, and Application of a Composite Adsorbent for Simultaneous Removal of Arsenic and Fluoride[J]. Science & Technology - Other Topics; Materials Science,2012,4(2):714-720. |
| APA | Jing, Chuanyong,Cui, Jinli,Huang, Yuying,&Li, Aiguo.(2012).Fabrication, Characterization, and Application of a Composite Adsorbent for Simultaneous Removal of Arsenic and Fluoride.Science & Technology - Other Topics; Materials Science,4(2),714-720. |
| MLA | Jing, Chuanyong,et al."Fabrication, Characterization, and Application of a Composite Adsorbent for Simultaneous Removal of Arsenic and Fluoride".Science & Technology - Other Topics; Materials Science 4.2(2012):714-720. |
入库方式： OAI收割
来源：生态环境研究中心
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