Please use this identifier to cite or link to this item: http://www.repositorio.ufop.br/jspui/handle/123456789/14299
Title: Impact of microaeration bioreactor on dissolved sulfide and methane removal from real UASB effluent for sewage treatment.
Authors: Cabral, C. S.
Sanson, Ananda Lima
Afonso, Robson José de Cássia Franco
Chernicharo, Carlos Augusto de Lemos
Araújo, J. C.
Keywords: Biological oxidation
Elemental sulfur
Issue Date:  202
Citation: CABRAL, C. S. et al. Impact of microaeration bioreactor on dissolved sulfide and methane removal from real UASB effluent for sewage treatment. Water Science and Technology, v. 81, n. 9, p. 1951-1960, 2020. Disponível em: <https://iwaponline.com/wst/article/81/9/1951/74289/Impact-of-microaeration-bioreactor-on-dissolved>. Acesso em: 10 jun. 2021.
Abstract: Two bioreactors were investigated as an alternative for the post-treatment of effluent from an upflow anaerobic sludge blanket (UASB) reactor treating domestic sewage, aiming at dissolved sulfide and methane removal. The bioreactors (R-control and R-air) were operated at different hydraulic retention times (HRT; 6 and 3 h) with or without aeration. Large sulfide and methane removal efficiencies were achieved by the microaerated reactor at HRT of 6 h. At this HRT, sulfide removal efficiencies were equal to 61% and 79%, and methane removal efficiencies were 31% and 55% for R-control and R-air, respectively. At an HRT of 3 h, sulfide removal efficiencies were 22% (R-control) and 33% (R-air) and methane removal did not occur. The complete oxidation of sulfide, with sulfate formation, prevailed in both phases and bioreactors. However, elemental sulfur formation was more predominant at an HRT of 6 h than at an HRT of 3 h. Taken together, the results show that post-treatment improved the anaerobic effluent quality in terms of chemical oxygen demand and solids removal. However, ammoniacal nitrogen was not removed due to either the low concentration of air provided or the absence of microorganisms involved in the nitrogen cycle.
URI: http://www.repositorio.ufop.br/jspui/handle/123456789/14299
metadata.dc.identifier.uri2: https://iwaponline.com/wst/article/81/9/1951/74289/Impact-of-microaeration-bioreactor-on-dissolved
metadata.dc.identifier.doi: https://doi.org/10.2166/wst.2020.250
ISSN: 1996-9732
Appears in Collections:DEQUI - Artigos publicados em periódicos

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