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Waste Management & Research, Vol. 12, No. 5, 417-428 (1994)
DOI: 10.1177/0734242X9401200505

Transport of Benzene and Trichloroethylene Through a Landfill Soil Liner Mixed With Coal Slurry

Rob Malone

Department of Agricultural Engineering, University of Kentucky, Lexington, Kentucky 40546-0276, U.S.A.

Richard C. Warner

Department of Agricultural Engineering, University of Kentucky, Lexington, Kentucky 40546-0276, U.S.A.

V.P. Evangelou

Department of Agronomy, University of Kentucky, Lexington, Kentucky 40546-00914, U.S.A.

John L. Wong

Department of Chemistry, University of Louisville, Louisville, Kentucky 40292, U.S.A.

The effect of mixing three Kentucky, U.S.A. coal slurries with soil on the transport of benzene and trichloroethylene (TCE) through a compacted landfill soil liner was investigated. Using typical values for variables, assuming no competition between contaminants, and a two to one soil-coal slurry ratio all three coal slurries were predicted to maintain the concentration of benzene emanating from a landfill liner below the maximum concentration limit (MCL) of 0.005 mg/l for at least 40 years. The concentration of TCE emanating from a landfill liner was predicted to remain below 0.001 mg/l for at least 100 years. The saturated hydraulic conductivity of a compacted silty loam soil (typical landfill soil liner material) was not found to be affected by the addition of coal slurry at a ratio of two parts soil to one part coal slurry. The results presented indicate that coal slurry amended soil will slow the movement of non-ionic organic contaminants through a landfill liner while the liner retains a low hydraulic conductivity.

Key Words: Adsorption • retardation • saturated hydraulic conductivity • benzene • trichloroethylene • contaminant transport • landfill • landfill soil liner • organic carbon content • attenuation • coal slurry • organic contaminants.


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