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ISSN: 2155-6199

Journal of Bioremediation & Biodegradation
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Research Article

Efficacy and Bioremediation Enhancement Potential of Four Dispersants Approved For Oil Spill Control in Nigeria

Temitope Olawunmi Sogbanmu* and Adebayo Akeem Otitoloju
Ecotoxicology Unit, Department of Zoology, Faculty of Science, University of Lagos, Akoka, Lagos, Nigeria
Corresponding Author : Temitope Olawunmi Sogbanmu
Ecotoxicology Unit, Department of Zoology
Faculty of Science, University of Lagos, Akoka, Lagos, Nigeria
Tel: +234(1)8985313
E-mail: [email protected]
Received: October 28, 2011; Accepted: February 03, 2012; Published: February 05, 2012
Citation: Sogbanmu TO, Otitoloju AA (2012) Efficacy and Bioremediation Enhancement Potential of Four Dispersants Approved For Oil Spill Control in Nigeria. J Bioremed Biodegrad 3:136. doi:10.4172/2155-6199.1000136
Copyright: © 2012 Sogbanmu TO, et al. This is an open-a ccess article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
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Abstract

The efficacy of four dispersants using the modified swirling flask method and their potential to support bacterial growth during simulated oil spill control were evaluated. On the basis of the derived efficacy ratios, OC/TT/OSI was the most effective dispersant tested followed by DS/TT/066, Biosolve and CCOD. The results of the bioremediation studies revealed that the dispersant, Biosolve supported the highest bacterial growth followed by CCOD, DS/TT/066 and OC/TT/OSI. Determination of left-over hydrocarbon content in dispersant-treated media showed that level of remediation was highest in media treated with DS/TT/066 followed by OC/TT/OSI, CCOD and Biosolve. Correlation analysis of bacterial growth with hydrocarbon content in assay media revealed that the dispersant, CCOD had the highest Bioremediation Enhancement Factor (-0.96) followed by Biosolve (-0.88), DS/TT/066 (-0.31) and OC/TT/OSI (0.15). The implications of these results in choosing dispersants that can enhance faster biodegradation of spilled crude oil in aquatic ecosystems were discussed.

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