Phytoremediation of chlorinated ethenes in seepline sediments: tree selection.
Phytoremediation of chlorinated ethene (CE)-contaminated water was investigated at the Savannah River Site in Aiken, SC, USA. Perchloroethylene (PCE) and trichloroethylene (TCE) are present where CE-contaminated groundwater currently outcrops in seepline soils. Results of constructed and planted test cells, filled with soil from a noncontaminated seepline area and supplied with CE-contaminated groundwater (48 ppb) in the field for one season are presented. These test cells were planted with loblolly pines, hybrid poplars, coyote willow, and sweet gum. Cis-dichloroethylene (cDCE), a byproduct from rhizosphere microbial activity, was detected in the soils as well as some tree tissues. All trees tested were found to uptake both PCE and TCE (5-50 pbb/gm dry wt).
Stanhope
Andrine
A
Florida A&M University, Tallahassee, Florida, USA
Berry
Christopher J
CJ
Brigmon
Robin L
RL
D001673:Biodegradation, Environmental; D005030:Ethylenes / Q000737:chemistry* / Q000378:metabolism*; D006843:Hydrocarbons, Chlorinated / Q000737:chemistry* / Q000378:metabolism*; D031317:Liquidambar / Q000378:metabolism; D028223:Pinus / Q000378:metabolism; D032107:Populus / Q000378:metabolism; D032108:Salix / Q000378:metabolism; D012989:Soil Pollutants / Q000737:chemistry / Q000378:metabolism; D014197:Trees / Q000378:metabolism*; D014867:Water / Q000737:chemistry
D005030:Ethylenes; D006843:Hydrocarbons, Chlorinated; D012989:Soil Pollutants; D014867:Water