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Impact of electrokinetic remediation on microbial communities within PCP contaminated soil.

Lear, G. and Harbottle, M. J. and Sills, G. and Knowles, C. J. and Semple, Kirk T. and Thompson, I. P. (2007) Impact of electrokinetic remediation on microbial communities within PCP contaminated soil. Environmental Pollution, 146 (1). pp. 139-146. ISSN 0269-7491

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Abstract

Electrokinetic techniques have been used to stimulate the removal of organic pollutants within soil, by directing contaminant migration to where remediation may be more easily achieved. The effect of this and other physical remediation techniques on the health of soil microbial communities has been poorly studied and indeed, largely ignored. This study reports the impact on soil microbial communities during the application of an electric field within ex situ laboratory soil microcosms contaminated with pentachlorophenol (PCP; 100 mg kg(-1) oven dry soil). Electrokinetics reduced counts of culturable bacteria and fungi, soil microbial respiration and carbon substrate utilisation, especially close to the acidic anode where PCP accumulated (36 d), perhaps exacerbated by the greater toxicity of PCP at lower soil pH. There is little doubt that a better awareness of the interactions between soil electrokinetic processes and microbial communities is key to improving the efficacy and sustainability of this remediation strategy. (c) 2006 Elsevier Ltd. All rights reserved.

Item Type: Article
Journal or Publication Title: Environmental Pollution
Uncontrolled Keywords: electrokinetic ; soil remediation ; soil health ; carbon substrate utilisation ; pentachlorophenol
Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
Departments: Faculty of Science and Technology > Lancaster Environment Centre
ID Code: 18534
Deposited By: Prof Kirk T. Semple
Deposited On: 27 Oct 2008 11:55
Refereed?: Yes
Published?: Published
Last Modified: 18 Sep 2013 16:18
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/18534

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