Anaerobic degradation of azo dye Drimaren blue HFRL in UASB reactor in the presence of yeast extract a source of carbon and redox mediator.

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dc.contributor.authorBaeta, Bruno Eduardo Lobo
dc.contributor.authorAquino, Sergio Francisco de
dc.contributor.authorSilva, Silvana de Queiroz
dc.contributor.authorCorrêa, Cássia Aparecida Rabelo
dc.date.accessioned2017-05-02T14:35:39Z
dc.date.available2017-05-02T14:35:39Z
dc.date.issued2011
dc.description.abstractThis paper presents results on anaerobic degradation of the azo dye blue HFRL in a bench scale Upflow anaerobic sludge blanket (UASB) reactor operated at ambient temperature. The results show that the addition of yeast extract (500 mg/L) increased color removal (P\0.05) from 62 to 93% despite the low chemical oxygen demand (COD) removal (*35%) which happened due to volatile fatty acids (VFA) accumulation. There were no differences in color removal (*91%) when yeast extract (500 mg/L) was used in the presence or absence of glucose, suggesting that yeast extract acted as source of redox mediator (riboflavin) and carbon. The specific rate of dye removal increased along the operational phases and depended on the presence of yeast extract, suggesting progressive biomass acclimatization. Analysis of bacterial diversity by Polymerase Chain Reaction-Denaturing Gradient Gel Electrophoresis (PCR–DGGE) method showed there was biomass selection along the bioreactor operation and no evidence of azo dye degrading bacteria predominance. This strengthens the hypothesis that color removal happens extracellularly by the reduction of azo bond by reduced redox mediators, such as riboflavin, which is present in high amount in the yeast extract.pt_BR
dc.identifier.citationBAÊTA, B. E. L. et al. Anaerobic degradation of azo dye Drimaren blue HFRL in UASB reactor in the presence of yeast extract a source of carbon and redox mediator. Biodegradation, v. 23, p. 199-208, 2011. Disponível em: <https://link.springer.com/article/10.1007/s10532-011-9499-4>. Acesso em: 20 mar. 2017.pt_BR
dc.identifier.doihttps://doi.org/10.1007/s10532-011-9499-4
dc.identifier.issn1572-9729
dc.identifier.urihttp://www.repositorio.ufop.br/handle/123456789/7652
dc.identifier.uri2https://link.springer.com/article/10.1007/s10532-011-9499-4pt_BR
dc.language.isoen_USpt_BR
dc.rightsrestritopt_BR
dc.subjectColor removalpt_BR
dc.subjectAnaerobic digestionpt_BR
dc.subjectIndustrial wastewater treatmentpt_BR
dc.titleAnaerobic degradation of azo dye Drimaren blue HFRL in UASB reactor in the presence of yeast extract a source of carbon and redox mediator.pt_BR
dc.typeArtigo publicado em periodicopt_BR
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