Laboratory Study of Soil Flushing by Aqueous Solutions
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 124, Issue 10
Abstract
This paper explores the removal of organics from soils in a simulated in-situ environment using aqueous solution extraction. A laboratory investigation is described in which organic compounds representative of the major groups of organic contaminants were adsorbed in low concentrations onto slightly organic, loamy soil, and various aqueous solutions were permeated through the soil under controlled hydraulic gradients and effective stress conditions, simulating the in-situ extraction process. The effectiveness of the extraction process was evaluated by periodically measuring the concentration of the contaminants in the permeameter effluent. Simple contact shaking tests were also performed and compared with the results of the permeation tests to ascertain whether contact shaking tests can be used as an index to the effectiveness of permeation testing. The results may be applicable to injection and extraction wells, in which the solution extract is pumped to a location on the ground surface for treatment.
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Published In
Journal of Geotechnical and Geoenvironmental Engineering
Volume 124 • Issue 10 • October 1998
Pages: 989 - 996
Copyright
Copyright © 1998 American Society of Civil Engineers.
History
Published online: Oct 1, 1998
Published in print: Oct 1998
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