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Publication
Estimation of pollutant partition in sandy soils with different water contents
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Advisor(s)
Abstract(s)
The objectives of this work were: (1) to
identify an isotherm model to relate the contaminant
contents in the gas phase with those in
the solid and non-aqueous liquid phases; (2) to
develop a methodology for the estimation of the
contaminant distribution in the different phases
of the soil; and (3) to evaluate the influence of
soil water content on the contaminant distribution
in soil. For sandy soils with negligible contents
of clay and natural organic matter, contaminated
with benzene, toluene, ethylbenzene, xylene,
trichloroethylene (TCE), and perchloroethylene
(PCE), it was concluded that: (1) Freundlich’s
model showed to be adequate to relate the contaminant
contents in the gas phase with those in
the solid and non-aqueous liquid phases; (2) the
distribution of the contaminants in the different
phases present in the soil could be estimated with
differences lower than 10% for 83% of the cases; and (3) an increase of the soil water content led to
a decrease of the amount of contaminant in the
solid and non-aqueous liquid phases, increasing
the amount in the other phases.
Description
Keywords
Soil pollution Unsaturated soils Volatile organic chemicals Pollutant distribution Soil water