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Title: Drip Irrigation Aided Phytoremediation for Removal of TCE from Groundwater

Abstract

Groundwater in D-Area at the Savannah River Site (SRS) is contaminated with trichloroethylene (TCE) and by-products resulting from discharges of this organic solvent during past disposal practices. This contaminated groundwater occurs primarily at depths of 9 meters to 15 meters below ground surface, well below the depths that are typically penetrated by plant roots. The process investigated in this study involved pumping water from the contaminated aquifer and discharging the water into overlying test plots two inches below the surface using drip irrigation. The field treatability study was conducted from 8/31/00 to 4/18/02 using six 0.08 hectare test plots, two each containing pines, cottonwoods, and no vegetation (controls). The primary objective was to determine the overall effectiveness of the process for TCE removal and to determine the principal biotic and abiotic pathways for its removal. Results demonstrated that the process provides a viable method to remove TCE-contaminated groundwater. The data clearly showed that the presence of trees reduced volatilization of TCE from the drip irrigation system to the atmosphere. Influent groundwater TCE concentrations averaging 89 mg/L were reduced to non-detectable levels (less than 5 mg/L) within the upper two feet of soil (rhizosphere).

Authors:
Publication Date:
Research Org.:
Savannah River Site (US)
Sponsoring Org.:
US Department of Energy (US)
OSTI Identifier:
810351
Report Number(s):
WSRC-MS-2003-00141
TRN: US0302909
DOE Contract Number:  
AC09-96SR18500
Resource Type:
Conference
Resource Relation:
Conference: Seventh International Symposium on In Situ and On-Site Bioremediation, Orlando, FL (US), 06/02/2003--06/05/2003; Other Information: PBD: 24 Apr 2003
Country of Publication:
United States
Language:
English
Subject:
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; AQUIFERS; BIOREMEDIATION; CHLORINATED ALIPHATIC HYDROCARBONS; IRRIGATION; ORGANIC SOLVENTS; PUMPING; REMOVAL; SOILS; TREES; GROUND WATER; SAVANNAH RIVER PLANT

Citation Formats

Wilde, E.W. Drip Irrigation Aided Phytoremediation for Removal of TCE from Groundwater. United States: N. p., 2003. Web.
Wilde, E.W. Drip Irrigation Aided Phytoremediation for Removal of TCE from Groundwater. United States.
Wilde, E.W. Thu . "Drip Irrigation Aided Phytoremediation for Removal of TCE from Groundwater". United States. https://www.osti.gov/servlets/purl/810351.
@article{osti_810351,
title = {Drip Irrigation Aided Phytoremediation for Removal of TCE from Groundwater},
author = {Wilde, E.W.},
abstractNote = {Groundwater in D-Area at the Savannah River Site (SRS) is contaminated with trichloroethylene (TCE) and by-products resulting from discharges of this organic solvent during past disposal practices. This contaminated groundwater occurs primarily at depths of 9 meters to 15 meters below ground surface, well below the depths that are typically penetrated by plant roots. The process investigated in this study involved pumping water from the contaminated aquifer and discharging the water into overlying test plots two inches below the surface using drip irrigation. The field treatability study was conducted from 8/31/00 to 4/18/02 using six 0.08 hectare test plots, two each containing pines, cottonwoods, and no vegetation (controls). The primary objective was to determine the overall effectiveness of the process for TCE removal and to determine the principal biotic and abiotic pathways for its removal. Results demonstrated that the process provides a viable method to remove TCE-contaminated groundwater. The data clearly showed that the presence of trees reduced volatilization of TCE from the drip irrigation system to the atmosphere. Influent groundwater TCE concentrations averaging 89 mg/L were reduced to non-detectable levels (less than 5 mg/L) within the upper two feet of soil (rhizosphere).},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2003},
month = {4}
}

Conference:
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