Creosote-contaminated soil fraction

In situ generated micelles have been applied to the inspection of aniline pesticidic metabolites in lake water. The separation of 16 PAH in SUA oligomer electrolytes was reported. Creosote-contaminated soil samples were extracted by accelerated solvent extraction using methylene chloride-acetone mixtures. The extracts were further fractioned by gel permeation chromatography before analysis. The EKC chromatogram of a creosote-contaminated soil fraction shows the resolution of at least 50 peaks. The separation of the 11 priority phenols in river and sea water was demonstrated in MEKC with DBTD surfactants, whereas examples of the use of liposomes as carriers include the separation of benzene derivatives and phenols." ... 

Full-scale separation/washing and bioslurry reactor operations have been used to treat creosote-contaminated soil at the former Southeastern Wood Preserving Site at Canton, Mississippi (Jerger et al., 1994 Woodhull Jerger, 1994). Here, an estimated 10 500 yd3 of soil and sludge were excavated from various process areas, stabilized with kiln dust and stockpiled for subsequent treatment. Based on the results of preliminary bench studies, four 680 000 liter reactors were eventually established to handle 7050 yd3 of the screened (200-mesh) soil fraction at a solids content of 20-25%. Other oil fractions and waters were handled separately (data and costs not reported). 

Coal tar creosote components are slowly released from treated wood products by oil exudation, rainwater leaching, and by volatilization of the lighter fractions (Henningsson 1983). USDA (1980) reported that the major components of creosote were not detected in soil samples taken to a depth of 6 inches within 2-24 inches from treated poles, presumably as a result of biotransformation of mobilized components by soil microorganisms. Creosote components released to soils in waste water effluents have been found to be biotransformed by soil microbes under aerobic conditions (Middleton 1984). Bacteria of the genus Pseudomonas isolated from a creosote-contaminated waste site have been reported to degrade creosote-derived quinoline (Bennett et al. 1985). Acclimation to creosote phenolic constituents by soil microorganisms has also been demonstrated (Smith et al. 1985). 

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