| Electrically induced reduction of trichloroethene in clay. | |
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MedLine Citation:
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PMID: 19729244 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Chlorinated compounds such as trichloroethene (TCE) are recalcitrant contaminants commonly detected in soil and groundwater. Contemporary remedies such as electron donor amendment tend to be less or ineffective in treating chlorinated compounds in matrix of lower permeability, such as clay. In this study, electrically induced reduction (EIR) was tested by inserting electrodes in saturated clay containing 122.49-125.43 mg TCE kg(-1). Weak electric potentials (E) of 6, 9, and 12 V m(-1) were applied, and up to 97% of TCE were depleted during the study period. Corresponding increases in chloride concentrations was observed during TCE depletion, indicating a reductive dechlorination pathway. No migration of TCE was observed between the two electrodes, neither were intermediate compounds such as dichloroethene (DCE) or vinyl chloride (VC). Results were also tested against a mathematical equation we previously established for field applications. Electrically induced reduction may offer a novel method for in situ degradation of chlorinated contaminants, especially in low-permeable media such as clay. |
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Authors:
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Song Jin; Paul H Fallgren |
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Publication Detail:
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Type: Journal Article; Research Support, U.S. Gov't, Non-P.H.S. Date: 2009-08-22 |
Journal Detail:
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Title: Journal of hazardous materials Volume: 173 ISSN: 1873-3336 ISO Abbreviation: J. Hazard. Mater. Publication Date: 2010 Jan |
Date Detail:
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Created Date: 2009-11-27 Completed Date: 2010-02-18 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9422688 Medline TA: J Hazard Mater Country: Netherlands |
Other Details:
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Languages: eng Pagination: 200-4 Citation Subset: IM |
Affiliation:
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School of Resources and Environment, Hefei University of Technology, Hefei, PR China. sjin@uwyo.edu |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Algorithms Aluminum Silicates / chemistry* Electrochemistry Halogenation Hydrogen-Ion Concentration Oxidation-Reduction Soil / analysis Trichloroethylene / chemistry* Vinyl Chloride / chemistry |
| Chemical | |
Reg. No./Substance:
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0/Aluminum Silicates; 0/Soil; 1302-87-0/clay; 75-01-4/Vinyl Chloride; 79-01-6/Trichloroethylene |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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