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LEACHING BEHAVIOR OF PETROLEUM CONTAMINATED SOILS STABILIZED WITH HIGH CARBON CONTENT FLY ASH
 

Summary: 1
LEACHING BEHAVIOR OF PETROLEUM CONTAMINATED SOILS
STABILIZED WITH HIGH CARBON CONTENT FLY ASH
by Ahmet H. Aydilek1, M. Melih Demirkan1,
Eric A. Seagren1, Members, ASCE, and Neha Rustagi1
ABSTRACT:
Utilization of recycled materials as a substitute for natural soils in engineering
applications such as highway construction is an emerging application area. A
research study was conducted to investigate the stabilization of petroleum-
contaminated soils (PCSs) using another recycled material, high carbon content fly
ash (HCCFA), and evaluate the feasibility of using the final product in highway
embankment construction. A battery of laboratory tests was conducted to evaluate the
environmental suitability of stabilized PCSs. The test program included batch
adsorption and long-term column leaching tests. Naphthalene and o-xylene, and a
tertiary model non-aqueous phase liquid were used as the pollutants in batch sorption
and column tests, respectively. Batch sorption tests demonstrated a nonlinear sorption
behavior for naphthalene and o-xylene onto HCCFA. Column leaching test results
indicated that the naphthalene and o-xylene concentrations in the effluents collected
from the stabilized PCSs columns were lower than those collected from the control
columns. These laboratory test data suggest that HCCFA can be effective in

  

Source: Aydilek, Ahmet - Department of Civil and Environmental Engineering, University of Maryland at College Park

 

Collections: Engineering