R. Malone et al., TRANSPORT OF BENZENE AND TRICHLOROETHYLENE THROUGH A LANDFILL SOIL LINER MIXED WITH COAL SLURRY, Waste management and research, 12(5), 1994, pp. 417-428
he effect of mixing three Kentucky, U.S.A. coal slurries with soil on
the transport of benzene and trichloroethylene (TCE) through a compact
ed landfill soil liner was investigated. Using typical values for vari
ables, assuming no competition between contaminants, and a two to one
soil-coal slurry ratio all three coal slurries were predicted to maint
ain the concentration of benzene emanating from a landfill liner below
the maximum concentration limit (MCL) of 0.005 mg/l for at least 40 y
ears. The concentration of TCE emanating from a landfill liner was pre
dicted to remain below 0.001 mg/l for at least 100 years. The saturate
d hydraulic conductivity of a compacted silty loam soil (typical landf
ill 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. T
he results presented indicate that coal slurry amended soil will slow
the movement of non-ionic organic contaminants through a landfill line
r while the liner retains a low hydraulic conductivity.