Effect of a NAPL on migration of PCP in soil columns

Conference · Sun Dec 31 04:00:00 EST 1995

OSTI ID:150453

Wang, J; Wang, J M; Banerji, S K ^[1]

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1. Univ. of Missouri, Columbia, MO (United States); and others

Pentachlorophenol (PCP) is a widely used wood-treating chemical that is applied to wood under pressure in the form of concentrated solution in solvents that are nonaqueous phase liquids (NAPL). As a result, any spill at a wood-treating site using PCP results in soil contamination with PCP in the presence of a NAPL. Hence, a study of migration of PCP was conducted in presence of kerosene as a NAPL in unsaturated soils. Addition of kerosene to soil caused a change in the effective size of soil particles; the porosity, pore velocity, and dispersion coefficients, all changed (as measured by bromide breakthrough) in soil columns contaminated with kerosene. Moisture content of soil was found to be a key parameter determining the residual NAPL content in the soils. PCP/kerosene breakthrough experiments showed that the organic phase penetrated deeper and faster into soils with higher moisture content, and the residual kerosene acted as a sorptive phase that retarded the migration of PCP.

• Research Organization: Oak Ridge National Lab., TN (United States)
• OSTI ID: 150453
• Report Number(s): CONF-940526--
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
CHLORINATED AROMATIC HYDROCARBONS
CONTAMINATION
ENVIRONMENTAL TRANSPORT
KEROSENE
NONAQUEOUS SOLVENTS
PHYSICAL PROPERTIES
PLUMES
PRESERVATIVES
RESPONSE MODIFYING FACTORS
SOILS
WOOD PRODUCTS INDUSTRY