Evaluation of microbial surfactants for recovery of hydrophobic pollutants from soil |
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| Authors: | Michele I. Van Dyke Susan L. Gulley Hung Lee Jack T. Trevors |
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| Affiliation: | (1) Department of Environmental Biology, University of Guelph, N1G 2W1 Guelph, Ontario, Canada |
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| Abstract: | Summary Several microbially produced biosurfactants were evaluated for their ability to remove hydrophobic compounds from soil. The biosurfactants produced byPseudomonas aeruginosa UG2 andAcinetobacter calcoaceticus RAG-1 displayed the best results, with recovery of [14C]hexachlorobiphenyl from soil slurries of 48.0 and 41.9%, respectively.P. aeruginosa UG2 produced higher levels of extracellular biosurfactants than four otherP. aeruginosa strains.P. aeruginosa UG2 culture filtrate containing biosurfactants enhanced the recovery of several other individual hydrocarbons and polychlorinated biphenyl compounds, as well as several hydrocarbons in a mixture, from soil. The results, suggest that biosurfactants produced byP. aeruginosa UG2 have the potential for remediation of hydrophobic pollutants in soil environments. |
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| Keywords: | Acinetobacter calcoaceticus Bioemulsifier Biosurfactant Hydrophobic Hydrocarbon Pseudomonas aeruginosa Partitioning Recovery Remediation Soil |
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