Diffusion of TCE Through Soil-Bentonite Slurry Walls

Authors: MAGDALENA KROL; R. ROWE

Source: Soil and Sediment Contamination (formerly Journal of Soil Contamination), Volume 13, Number 1, January-February 2004 , pp. 81-101(21)

Publisher: Taylor and Francis Ltd

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Abstract:

Diffusion experiments performed using both a dissolved solution of trichloroethylene (TCE) and a pool of free phase TCE adjacent to a simulated soil-bentonite (SB) wall are described. These tests examine a multi-layer system that includes both contaminated sand and a SB barrier. Results obtained from experiments with dissolved TCE as the primary source are shown to be consistent with those obtained with free-phase TCE as the source of contaminant. Diffusion and sorption coefficients of a soil-bentonite slurry wall are reported to be 3.5 × 10-10 m2/s and 0 cm3/g, respectively. These diffusion and sorption coefficients were used to evaluate the effectiveness of a hypothetical SB slurry wall located adjacent to a TCE spill.

Keywords: Diffusion; trichloroethylene; slurry wall; soil-bentonite

Document Type: Research article

DOI: http://dx.doi.org/10.1080/10588330490269903

Affiliations: 1: Department of Civil and Environmental Engineering The University of Western Ontario, London, Ontario, Canada

Publication date: 2004-01-01