Decolorization and Biodegradation of Reactive Blue 13 by Proteus mirabilis LAG

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dc.contributor.authorOlukanni, Olumide
dc.date.accessioned2022-05-06T11:08:33Z
dc.date.available2022-05-06T11:08:33Z
dc.date.issued2010
dc.description.abstractThe decolorization and biodegradation of Reactive Blue 13 (RB13), a sulphonated reactive azo dye, was achieved under static anoxic condition with a bacterial strain identified as Proteus mirabilis LAG, which was isolated from a municipal dump site soil near Lagos, Nigeria. This strain decolorized RB13 (100 mg/l) within 5 h. The formation of aromatic amine prior to mineralization was supported by Fourier transform infrared spectrometry (FTIR), which revealed the disappearance of certain peaks, particularly those of the aromatic C–H bending at 600–800cm−1. Gas chromatography–mass spectrophotometry (GCMS) analysis of the dye metabolite showed the presence of sodium-2(2-formyl-2-hydroxyvinyl) benzoate, with a tropylium cation as its base peak. This suggested the breakage of naphthalene rings in RB13. The detection of azoreductase and laccase activities suggested the enzymatic reduction of azo bonds prior to mineralization. In addition, phytotoxicity studies indicated the detoxification of RB13 to non-toxic degradation products by this strain of P. mirabilis LAG.en_US
dc.identifier.issn0304-3894/
dc.identifier.urihttp://dspace.run.edu.ng:8080/jspui/handle/123456789/2748
dc.language.isoenen_US
dc.publisherElsevier B.V.en_US
dc.subjectReactive Blue 13en_US
dc.subjectDecolorizationen_US
dc.subjectBiodegradationen_US
dc.subjectMineralizationen_US
dc.subjectProteus mirabilis LAGen_US
dc.titleDecolorization and Biodegradation of Reactive Blue 13 by Proteus mirabilis LAGen_US
dc.typeArticleen_US
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