Extensive Biodegradation of polychlorinated Biphenyls in Aroclor 1242 and electrical Transformer Fluid (Askarel) by natural Strains of Microorganisms indigenous to contaminated African Systems

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dc.contributor.authorAdebusoye, S.A
dc.contributor.authorIlori, M.O
dc.contributor.authorPicardal, F. W
dc.contributor.authorAmund, O.O
dc.date.accessioned2015-12-23T12:47:04Z
dc.date.available2015-12-23T12:47:04Z
dc.date.issued2008
dc.descriptionTo access the full text kindly contact the University Librarian – Dr. Olukemi Fadehan via the administrators; Dr. Yetunde Zaid (yzaid@unilag.edu.ng) or Dr. Christopher Okiki (cokiki@unilag.edu.ng) of the University of Lagos Library to access the full text of this articleen_US
dc.description.abstractEvidence for substantial aerobic degradation of Aroclor 1242 and Askarel fluid by newly characterized bacterial strains belonging to the Enterobacter, Ralstonia and Pseudomonas genera is presented. The organisms exhibited degradative activity in terms of total PCB/Askarel degradation, degradation of individual congeners and diversity of congeners attacked. Maximal degradation by the various isolates of Askarel ranged from 69% to 86% whereas, Aroclor 1242, with the exception of Ralstonia sp. SA-4 (9.7%), was degraded by 37% to 91%. PCB analysis showed that at least 45 of the representative congeners in Aroclor 1242 were extensively transformed by benzoate-grown cells without the need for biphenyl as an inducer of the upper degradation pathway. In incubations with Aroclor 1242, no clear correlation was observed between percentage of congener transformed and the degree of chlorination, regardless of the presence or absence of biphenyl. Recovery of significant but nonstoichiometric amounts of chloride from the culture media showed partial dechlorination of congeners and suggested production of partial degradation products. Addition of biphenyl evidently enhanced dechlorination of the mixture by some isolates. With the exception of Ralstonia sp. SA-5, chloride released ranged from 24% to 60% in the presence of biphenyl versus 0.35% to 15% without biphenyl.en_US
dc.identifier.citationAdebusoye et al. (2008) Extensive Biodegradation of polychlorinated Biphenyls in Aroclor 1242 and electrical Transformer Fluid (Askarel) by natural Strains of Microorganisms indigenous to contaminated African Systems. Chemosphere. 73(1):126-32en_US
dc.identifier.urihttp://ir.unilag.edu.ng:8080/xmlui/handle/123456789/396
dc.language.isoenen_US
dc.subjectEnterobacteren_US
dc.subjectRalstoniaen_US
dc.subjectPseudomonasen_US
dc.subjectAskarel fluiden_US
dc.subjectBiphenylen_US
dc.titleExtensive Biodegradation of polychlorinated Biphenyls in Aroclor 1242 and electrical Transformer Fluid (Askarel) by natural Strains of Microorganisms indigenous to contaminated African Systemsen_US
dc.typeArticleen_US
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