alexa Bioremediation of crude oil-contaminated soil: comparison of different biostimulation and bioaugmentation treatments.
Chemical Engineering

Chemical Engineering

Journal of Advanced Chemical Engineering

Author(s): Xu Y, Lu M

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Abstract Biostimulation with inorganic fertilizer and bioaugmentation with hydrocarbon utilizing indigenous bacteria were employed as remedial options for 12 weeks in a crude oil-contaminated soil. To promote oil removal, biocarrier for immobilization of indigenous hydrocarbon-degrading bacteria was developed using peanut hull powder. Biodegradation was enhanced with free-living bacterial culture and biocarrier with a total petroleum hydrocarbon removal ranging from 26\% to 61\% after a 12-week treatment. Oil removal was also enhanced when peanut hull powder was only used as a bulking agent, which accelerated the mass transfer rate of water, oxygen, nutrients and hydrocarbons, and provided nutrition for the microflora. Dehydrogenase activity in soil was remarkably enhanced by the application of carrier material. Metabolites of polycyclic aromatic hydrocarbons were identified by Fourier transform ion cyclotron resonance mass spectrometry. Copyright © 2010 Elsevier B.V. All rights reserved. This article was published in J Hazard Mater and referenced in Journal of Advanced Chemical Engineering

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