| Adsorption of mercury on lignin: Combined surface complexation modeling and X-ray absorption spectroscopy studies. | |
| | |
MedLine Citation:
|
PMID: 22243872 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
|
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 HgCl(2)(0) 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. |
| | |
Authors:
|
Jitao Lv; Lei Luo; Jing Zhang; Peter Christie; Shuzhen Zhang |
Publication Detail:
|
Type: Journal Article Date: 2011-12-17 |
Journal Detail:
|
Title: Environmental pollution (Barking, Essex : 1987) Volume: 162 ISSN: 1873-6424 ISO Abbreviation: Environ. Pollut. Publication Date: 2012 Mar |
Date Detail:
|
Created Date: 2012-01-16 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 8804476 Medline TA: Environ Pollut Country: England |
Other Details:
|
Languages: eng Pagination: 255-61 Citation Subset: IM |
Copyright Information:
|
Copyright © 2011 Elsevier Ltd. All rights reserved. |
Affiliation:
|
State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Ecotoxicology and macroecology - Time for integration.
Next Document: Polybrominated diphenyl ethers and decabromodiphenylethane in sediments from twelve lakes in China.