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Anaerobic degradation of anionic surfactants by indigenous microorganisms from sediments of a tropical polluted river in Brazil

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dc.creatorSilveira Duarte, Iolanda Cristina
dc.creatorde França, Paula
dc.creatorYukio Okada, Dagoberto
dc.creatorFerreira do Prado, Pierre
dc.creatorAmancio Varesche, Maria Bernadete
dc.date2015-03-01
dc.date.accessioned2016-05-03T15:27:32Z
dc.date.available2016-05-03T15:27:32Z
dc.descriptionThe aim of this study was to evaluate the ability of the microorganisms present in the sediment of the Tietê river to degrade anionic surfactant – linear alkylbenzene sulphonate (LAS)  in the reactor operated in batch sequences under denitrifying conditions.  The reactor was fed with synthetic substrate consisting of yeast extract, soluble starch, sodium bicarbonate and sucrose; LAS was added at different stages in concentration of 15 mg/l after 30 mg/L. Reduction in the concentration of co-substrates were evaluated in order to optimize the degradation of surfactant. The results showed that the efficiency of degradation of LAS is directly related to the population of denitrifying bacteria and that the Tietê River sediment can be used as inoculum for the treatment of LAS.  These bacteria were able to degrade LAS regardless of additional carbon source.  The removal of LAS and nitrate can be achieved simultaneously in wastewater with low organic load.en-US
dc.descriptionThe aim of this study was to evaluate the ability of the microorganisms present in the sediment of the Tietê river to degrade anionic surfactant – linear alkylbenzene sulphonate (LAS)  in the reactor operated in batch sequences under denitrifying conditions.  The reactor was fed with synthetic substrate consisting of yeast extract, soluble starch, sodium bicarbonate and sucrose; LAS was added at different stages in concentration of 15 mg/l after 30 mg/L. Reduction in the concentration of co-substrates were evaluated in order to optimize the degradation of surfactant. The results showed that the efficiency of degradation of LAS is directly related to the population of denitrifying bacteria and that the Tietê River sediment can be used as inoculum for the treatment of LAS.  These bacteria were able to degrade LAS regardless of additional carbon source.  The removal of LAS and nitrate can be achieved simultaneously in wastewater with low organic load.es
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dc.identifierhttp://revistas.ucr.ac.cr/index.php/rbt/article/view/13617
dc.identifier10.15517/rbt.v63i1.13617
dc.identifier.urihttps://hdl.handle.net/10669/26181
dc.languageeng
dc.publisherUniversidad de Costa Ricaen
dc.relationhttp://revistas.ucr.ac.cr/index.php/rbt/article/view/13617/17594
dc.rightsacceso abierto
dc.sourceRevista de Biología Tropical/International Journal of Tropical Biology and Conservation; Vol 63, No 1 (2015); 295-302en
dc.sourceRevista de Biología Tropical/International Journal of Tropical Biology and Conservation; Vol 63, No 1 (2015); 295-302es
dc.sourceRevista Biología Tropical; Vol 63, No 1 (2015); 295-302pt-PT
dc.source2215-2075
dc.source0034-7744
dc.source10.15517/rbt.v63i1
dc.subjectanaerobicen
dc.subjectsurfactanten
dc.subjectdegradationen
dc.subjectbacteriaen
dc.subjectnitrateen
dc.subjectanaerobices
dc.subjectsurfactantes
dc.subjectdegradationes
dc.subjectbacteriaes
dc.subjectnitratees
dc.titleAnaerobic degradation of anionic surfactants by indigenous microorganisms from sediments of a tropical polluted river in Brazilen
dc.titleAnaerobic degradation of anionic surfactants by indigenous microorganisms from sediments of a tropical polluted river in Braziles
dc.typeartículo original

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