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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Harbottle, Michael J. Lear, Gavin Sills, Gilliane C. Thompson, Ian P. |
| Description | Country affiliation: United kingdom Author Affiliation: Harbottle MJ ( Department of Engineering Science, University of Oxford, Oxford, UK. harbottlem@cardiff.ac.uk) |
| Abstract | This study investigated the use of electrokinetics in unsaturated soil to promote biodegradation of pentachlorophenol through increased contact between bacteria and contaminant. Soil microcosms, contaminated with approximately 100 mg kg(-1) pentachlorophenol (containing [(14)C]-PCP as a tracer), and inoculated with a specific pentachlorophenol-degrading bacterium (Sphingobium sp. UG30-1 x 10(8) cfu g(-1)) were subjected to constant and regularly reversed electric currents (10 mA). The former caused large pH and moisture content changes due to water electrolysis and electroosmotic effects, with subsequent negative impacts on biodegradation parameters including enzyme activity and contaminant mineralisation (as measured by (14)CO(2) evolution rate). The reversed field caused little change in pH and moisture content and led to more rapid contaminant mineralisation, lower soil contaminant concentration in the majority of the microcosms and increased soil enzyme activity (with the exception of soil immediately adjacent to the anode). The presence of an electric field, if suitably applied, may therefore enhance contaminant biodegradation in unsaturated soil. |
| File Format | HTM / HTML |
| ISSN | 03014797 |
| Issue Number | 5 |
| Volume Number | 90 |
| e-ISSN | 10958630 |
| Journal | Journal of Environmental Management |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2009-04-01 |
| Publisher Place | Great Britain (UK) |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Environmental Discipline Science Biodegradation, Environmental Pentachlorophenol Metabolism Soil Microbiology Soil Pollutants Sphingobacterium Electrolysis Methods Electroosmosis Kinetics Journal Article Research Support, Non-u.s. Gov't |
| Content Type | Text |
| Resource Type | Article |
| Subject | Waste Management and Disposal Medicine Environmental Engineering Management, Monitoring, Policy and Law |
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