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BIODEGRADATION OF POLYNUCLEAR AROMATIC HYDROCARBONS USING INDIGENOUS STRAINS OF BACTERIA FOR SUSTAINABLE SOIL DEVELOPMENT

Obinna, C. N. and Flynn, W. P. and Thuy, T. A. and Olukayode, O. A. and Ayano, T and Ajanaku, K. O. and Siyanbola, T. O. and Ehi-Eromosele, C. O. and Adekoya, J. A. (2013) BIODEGRADATION OF POLYNUCLEAR AROMATIC HYDROCARBONS USING INDIGENOUS STRAINS OF BACTERIA FOR SUSTAINABLE SOIL DEVELOPMENT. In: 13-17 May, 2013, 13-17 May, 2013, Conference Centre, University of lbadan, lbadan, Nigeria.

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Abstract

16S rRNA gene sequence analyses of the four isolates from a former industrial site (OC1, OC2, OC3, and OC4) were assigned to the genus, Enterobacter (OC1) and Pseudomonas (OC2, OC3, and OC4). The degradation and growth behaviour of the four isolates were investigated on naphthalene, fluoranthene, pyrene and chrysene. All the strains utilized naphthalene, fluoranthene, chrysene but pyrene partially, as sole sources of carbon and energy. The time course studies using relative concentration> 100, >115, > 89 and> 12 ppm for naphthalene, fluoranthene, pyrene and chrysene respectively, resulted in rapid exponential increases in cell numbers and concomitant disappearance of the test substrates. Naphthalene was degraded between the range of 25 and 99%, while chrysene degradation ranged between 35 and 69%, pyrene 4 -21% and fluoranthene 7 -19 %. Our results suggest that contaminated, former industrial sites contain a capable microbial community that may be used for bioremediation of the site for sustainable soil development

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: 16S rRNA, Contaminated sites, Bioremediation, Napthalene, Fluoranthene, Pyrene, Chrysene
Subjects: Q Science > QD Chemistry
Divisions: Faculty of Engineering, Science and Mathematics > School of Chemistry
Depositing User: Mrs Patricia Nwokealisi
Date Deposited: 17 Jan 2017 15:48
Last Modified: 17 Jan 2017 15:48
URI: http://eprints.covenantuniversity.edu.ng/id/eprint/7552

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