Document Detail


Application of surfactant enhanced permanganate oxidation and bidegradation of trichloroethylene in groundwater.
MedLine Citation:
PMID:  18436375     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The industrial solvent trichloroethylene (TCE) is among the most ubiquitous chlorinated solvents found in groundwater contamination. The main objectives of this study were to evaluate the feasibility of using non-ionic surfactant Simple Green (SG) to enhance the oxidative dechlorination of TCE by potassium permanganate (KMnO4) employing a continuous stir batch reactor system (CSBR) and column experiments. The effect of using surfactant SG to enhance the biodegradation of TCE via aerobic cometabolism was also examined. Results from CSBR experiments revealed that combination of KMnO4 with surfactant SG significantly enhanced contaminant removal, particularly when the surfactant SG concentrated at its CMC. TCE degradation rates ranged from 74.1% to 85.7% without addition of surfactant SG while TCE degradation rates increased to ranging from 83.8% to 96.3% with presence of 0.1wt% SG. Furthermore, results from column experiments showed that TCE was degraded from 38.1microM to 6.2microM in equivalent to 83.7% of TCE oxidation during first 560min reaction. This study has also demonstrated that the addition of surfactant SG is a feasible method to enhance bioremediation efficiency for TCE contaminated groundwater. The complete TCE degradation was detected after 75 days of incubation with both 0.01 and 0.1wt% of surfactant SG addition. Results revealed that surfactant enhanced chemical oxidation and bioremediation technology is one of feasible approaches to clean up TCE contaminated groundwater.
Authors:
T T Tsai; C M Kao; T Y Yeh; S H Liang; H Y Chien
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2008-03-21
Journal Detail:
Title:  Journal of hazardous materials     Volume:  161     ISSN:  0304-3894     ISO Abbreviation:  J. Hazard. Mater.     Publication Date:  2009 Jan 
Date Detail:
Created Date:  2008-11-18     Completed Date:  2009-02-24     Revised Date:  2009-11-19    
Medline Journal Info:
Nlm Unique ID:  9422688     Medline TA:  J Hazard Mater     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  111-9     Citation Subset:  IM    
Affiliation:
Institute of Environmental Engineering, National Sun Yat-Sen University, Kaohsiung, Taiwan.
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MeSH Terms
Descriptor/Qualifier:
Chemistry Techniques, Analytical / instrumentation,  methods*
Manganese Compounds / chemistry*
Oxidation-Reduction
Oxides / chemistry*
Solutions
Surface-Active Agents / chemistry*
Trichloroethylene / chemistry*
Water / analysis*,  chemistry*
Water Pollutants, Chemical / chemistry*
Chemical
Reg. No./Substance:
0/Manganese Compounds; 0/Oxides; 0/Solutions; 0/Surface-Active Agents; 0/Water Pollutants, Chemical; 14333-13-2/permanganic acid; 7732-18-5/Water; 79-01-6/Trichloroethylene

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