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Reducing COD level on oily effluent by utilizing biosurfactant-producing bacteria BABT
Jacobucci,Daniela Franco Carvalho; Oriani,Maria Raquel de Godoy; Durrant,Lucia Regina.
Two bacteria isolated from crude oil contaminated soil, Pantoea agglomerans and Planococcus citreus, produced biosurfactants utilizing 1.5% of kerosene and olive oil as the sole carbon sources, respectively. The bacteria and the biosurfactants produced were introduced to oily effluent, arising from margarine and soap industry. Emulsification activities were determined by increases in the absorbance of the oil-in-water emulsions at 610 nm, whereas the water-in-oil emulsions were expressed as the height (cm) of the emulsion layers formed. The 72 h incubation experiment resulted in a COD (Chemical Oxygen Demand) reduction of 76% with Planococcus citreus strain and 70% with Pantoea agglomerans.The COD reduction with bacterial biosurfactants was over 50% in 24...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Biosurfactants; Bacteria; COD; Oily effluent; Bioremediation.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000400029
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