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Title: Degradation of a model azo dye in submerged anaerobic membrane bioreactor (SAMBR) operated with powdered activated carbon (PAC).
Authors: Baeta, Bruno Eduardo Lobo
Luna, H. J.
Sanson, Ananda Lima
Silva, Silvana de Queiroz
Aquino, Sergio Francisco de
Keywords: Submerged anaerobic membrane bioreactor
Azo dye
Powdered activated carbon
Volatile fatty acids
Issue Date: 2013
Citation: BAETA, B. E. L. et al. Degradation of a model azo dye in submerged anaerobic membrane bioreactor (SAMBR) operated with powdered activated carbon (PAC). Journal of Environmental Management, v. 128, p. 462-470, 2013. Disponível em: <>. Acesso em: 02 fev. 2015.
Abstract: This work investigated the anaerobic degradation of the model azo dye Remazol Yellow Gold RNL in an upflow anaerobic sludge blanket reactor (UASB) and two submerged anaerobic membrane (SAMBR) bioreactors, one of which (SAMBR-1) was operated with powdered activated carbon (PAC) in its interior. The reactors were operated at 35 _C with a hydraulic retention time of 24 h in three operational phases, aimed to assess the effect of external sources of carbon (glucose) or redox mediator (yeast extract) on the removal or color and organic matter. The results showed that removal efficiencies of COD (73e94%) and color (90e94%) were higher for SAMBR-1 when compared to SAMBR-2 (operated without PAC) and UASB reactors. In addition, the presence of PAC in SAMBR-1 increased reactor stability, thereby leading to a lower accumulation of volatile fatty acids (VFA). The microfiltration membrane was responsible for an additional removal ofw50% of soluble residual COD in the form of VFA, thus improving permeate quality. On its turn, PAC exhibited the ability to adsorb byproducts (aromatic amines) of azo dye degradation as well as to act as source of immobilized redox mediator (quinone groups on its surface), thereby enhancing color removal.
ISSN: 0301-4797
metadata.dc.rights.license: O periódico Journal of Environmental Management concede permissão para depósito deste artigo no Repositório Institucional da UFOP. Número da licença: 3582470944250.
Appears in Collections:DEQUI - Artigos publicados em periódicos

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