Adsorption of mercury on lignin: Combined surface complexation modeling and X-ray absorption spectroscopy studies
文献类型：期刊论文
| ; | |
| 作者 | Lv, JT; Luo, L; 张静;Zhang, J; Christie, P; Zhang, SZ |
| 刊名 | ENVIRONMENTAL POLLUTION
 ; ENVIRONMENTAL POLLUTION
|
| 出版日期 | 2012 ; 2012 |
| 卷号 | 162页码:255-261 |
| 关键词 | Hg(II) Lignin Adsorption Surface complexation model XAS Hg(II) Lignin Adsorption Surface complexation model XAS |
| DOI | 10.1016/j.envpol.2011.11.012 |
| 英文摘要 | Adsorption of mercury (Hg) on lignin was studied at a range of pH values using a combination of batch adsorption experiments, a surface complexation model (SCM) and synchrotron X-ray absorption spectroscopy (XAS). Surface complexation modeling indicates that three types of acid sites on lignin surfaces, namely aliphatic carboxylic-, aromatic carboxylic- and phenolic-type surface groups, contributed to Hg(II) adsorption. The bond distance and coordination number of Hg(II) adsorption samples at pH 3.0, 4.0 and 5.5 were obtained from extended X-ray absorption fine structure (EXAFS) spectroscopy analysis. The results of SCM and XAS combined reveal that the predominant adsorption species of Hg(II) on lignin changes from HgCl20 to monodentate complex C-O HgCl and then bidentate complex -C-O-Hg-O-C- with increasing pH value from 2.0 to 6.0. The good agreement between SCM and XAS results provides new insight into understanding the mechanisms of Hg(II) adsorption on lignin. (C) 2011 Elsevier Ltd. All rights reserved.; Adsorption of mercury (Hg) on lignin was studied at a range of pH values using a combination of batch adsorption experiments, a surface complexation model (SCM) and synchrotron X-ray absorption spectroscopy (XAS). Surface complexation modeling indicates that three types of acid sites on lignin surfaces, namely aliphatic carboxylic-, aromatic carboxylic- and phenolic-type surface groups, contributed to Hg(II) adsorption. The bond distance and coordination number of Hg(II) adsorption samples at pH 3.0, 4.0 and 5.5 were obtained from extended X-ray absorption fine structure (EXAFS) spectroscopy analysis. The results of SCM and XAS combined reveal that the predominant adsorption species of Hg(II) on lignin changes from HgCl20 to monodentate complex C-O HgCl and then bidentate complex -C-O-Hg-O-C- with increasing pH value from 2.0 to 6.0. The good agreement between SCM and XAS results provides new insight into understanding the mechanisms of Hg(II) adsorption on lignin. (C) 2011 Elsevier Ltd. All rights reserved. |
| 学科主题 | Environmental Sciences & Ecology ; Environmental Sciences & Ecology |
| 收录类别 | SCI |
| WOS记录号 | WOS:000301087800032 ; WOS:000301087800032 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/223912]  |
| 专题 | 高能物理研究所_多学科研究中心 |
| 推荐引用方式 GB/T 7714 | Lv, JT,Luo, L,张静；Zhang, J,et al. Adsorption of mercury on lignin: Combined surface complexation modeling and X-ray absorption spectroscopy studies, Adsorption of mercury on lignin: Combined surface complexation modeling and X-ray absorption spectroscopy studies[J]. ENVIRONMENTAL POLLUTION, ENVIRONMENTAL POLLUTION,2012, 2012,162, 162:255-261, 255-261. |
| APA | Lv, JT,Luo, L,张静；Zhang, J,Christie, P,&Zhang, SZ.(2012).Adsorption of mercury on lignin: Combined surface complexation modeling and X-ray absorption spectroscopy studies.ENVIRONMENTAL POLLUTION,162,255-261. |
| MLA | Lv, JT,et al."Adsorption of mercury on lignin: Combined surface complexation modeling and X-ray absorption spectroscopy studies".ENVIRONMENTAL POLLUTION 162(2012):255-261. |
入库方式： OAI收割
来源：高能物理研究所
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