| Ozonation of trichloroethylene in acetic acid solution with soluble and solid humic acid. | |
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MedLine Citation:
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PMID: 18511186 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The combined flushing and oxidation process using acetic acid and ozone has been used successfully to remove trichloroethylene (TCE) completely from contaminated soil. In this study, the effects of humic acid, a fraction of the organic matter in soil, over the performance of TCE decomposition was evaluated. TCE decomposition by ozone was enhanced by the presence of humic acid at concentrations lower than 8mgCL(-1) and then inhibited at higher concentrations. It is possible that the presence of the soluble humic acid fraction during the ozonation of TCE in acetic acid solutions produces hydroxyl radicals during the TCE ozonation which appears to be the reason for the enhanced TCE decomposition rate. Solid humic acid reduced TCE decomposition rate by acting as an ozone scavenger. Similarly, sorbed TCE reduced the amount of TCE available for decomposition by ozone in solution. |
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Authors:
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Martha E Alcántara-Garduño; Tetsuji Okuda; Wataru Nishijima; Mitsumasa Okada |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2008-03-30 |
Journal Detail:
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Title: Journal of hazardous materials Volume: 160 ISSN: 0304-3894 ISO Abbreviation: J. Hazard. Mater. Publication Date: 2008 Dec |
Date Detail:
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Created Date: 2008-11-05 Completed Date: 2009-02-09 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: 662-7 Citation Subset: IM |
Affiliation:
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Department of Chemical Engineering, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima 739-8527, Japan. martele31@angel.umar.mx |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Acetic Acids
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chemistry* Benzopyrans / chemistry Free Radicals / analysis Humic Substances / analysis* Indicators and Reagents Oxidants, Photochemical / chemistry* Ozone / chemistry* Solubility Solutions Trichloroethylene / chemistry* |
| Chemical | |
Reg. No./Substance:
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0/Acetic Acids; 0/Benzopyrans; 0/Free Radicals; 0/Humic Substances; 0/Indicators and Reagents; 0/Oxidants, Photochemical; 0/Solutions; 10028-15-6/Ozone; 479-66-3/fulvic acid; 79-01-6/Trichloroethylene |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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