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Environ Pollut

Title:		A mass balance study of the phytoremediation of perchloroethylene-contaminated groundwater
Author(s):		James CA; Xin G; Doty SL; Muiznieks I; Newman L; Strand SE;
Address:		"University of Washington, Department of Civil and Environmental Engineering, Seattle, WA 98195, USA"
Journal Title:		Environ Pollut
Year:		2009
Volume:		20090403
Issue:		8-Sep
Page Number:		2564 - 2569
DOI:		10.1016/j.envpol.2009.02.033
ISSN/ISBN:		1873-6424 (Electronic) 0269-7491 (Print) 0269-7491 (Linking)
Abstract:		"A mass balance study was performed under controlled field conditions to investigate the phytoremediation of perchloroethylene (PCE) by hybrid poplar trees. Water containing 7-14 mg L(-1) PCE was added to the test bed. Perchloroethylene, trichloroethylene, and cis-dichloroethylene were detected in the effluent at an average of 0.12 mg L(-1), 3.9 mg L(-1), and 1.9 mg L(-1), respectively. The total mass of chlorinated ethenes in the water was reduced by 99%. Over 95% of the recovered chlorine was as free chloride in the soil, indicating near-complete dehalogenation of the PCE. Transpiration, volatilization, and accumulation in the trees were all found to be minor loss mechanisms. In contrast, 98% of PCE applied to an unplanted soil chamber was recovered as PCE in the effluent water or volatilized into the air. These results suggest that phytoremediation can be an effective method for treating PCE-contaminated groundwater in field applications"
Keywords:		"Biodegradation, Environmental Chlorides/analysis Environmental Monitoring Groundwater/*chemistry Populus/metabolism Soil/chemistry Tetrachloroethylene/*analysis/metabolism Volatile Organic Compounds/analysis/metabolism Water Pollutants, Chemical/*analysis;"
Notes:		"MedlineJames, C Andrew Xin, Gang Doty, Sharon L Muiznieks, Indulis Newman, Lee Strand, Stuart E eng P42 ES004696/ES/NIEHS NIH HHS/ P42 ES004696-22/ES/NIEHS NIH HHS/ P42ES04696/ES/NIEHS NIH HHS/ Research Support, N.I.H., Extramural Research Support, Non-U.S. Gov't England 2009/04/07 Environ Pollut. 2009 Aug-Sep; 157(8-9):2564-9. doi: 10.1016/j.envpol.2009.02.033. Epub 2009 Apr 3"