Risk based Management and Bioremediation of Crude Oil-Contaminated Site in Cold Climate

M.S. Kuyukina, I.B. Ivshina (Russia), T.A. Peshkur, and C.J. Cunningham (UK)

Keywords

Crude oilcontaminated soil, risk assessment, land management, bioremediation

Abstract

Land contamination by crude oil presents a serious environmental problem for oil-producing regions and especially to those located in cold climates. In this study, a risk based approach to the management and bioremediation of a crude oil contaminated site is proposed and the results of a pilot scale field trial presented. Specialist bioremediation techniques such as soil-slurry bioreactors, augmentation with immobilized cultures of hydrocarbon-oxidizing bacteria and biosurfactant addition were proven to be efficient in the clean-up of oil-contaminated soil in cold climate conditions. Soil that was heavily contaminated by crude oil was cleaned-up to within risk assessment standards and soil phytotoxicity was found to be greatly reduced.

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