Please use this identifier to cite or link to this item: http://www.repositorio.ufop.br/jspui/handle/123456789/17884
Title: Use of hollow fibre membrane contactors to remove dissolved gases from effluents of UASB reactors treating sewage after its conditioning with dynamic membrane filtration.
Authors: Mora, Erick Centeno
Paranhos, Aline Gomes de Oliveira
Aquino, Sergio Francisco de
Chernicharo, Carlos Augusto de Lemos
Keywords: Anaerobic sewage treatment
Degassing membrane
Dynamic membrane filtration
Dissolved methane
Sulphide
Issue Date: 2023
Citation: MORA, R. C et al. Use of hollow fibre membrane contactors to remove dissolved gases from effluents of UASB reactors treating sewage after its conditioning with dynamic membrane filtration. Journal of Water Process Engineering, v. 53, artigo 103593, jul. 2023. Disponível em: <https://www.sciencedirect.com/science/article/pii/S2214714423001101>. Acesso em: 01 ago. 2023.
Abstract: Dissolved gases in the effluent of anaerobic reactors, such as dissolved methane (D-CH4) and sulphide (S2− ), are a drawback for anaerobic-based sewage treatment plants. Hollow fibre membrane contactors (HFMCs) have been tested for the removal of these compounds, and this paper evaluated a novel configuration with pressurised dynamic membrane modules (PDMMs) for conditioning an anaerobic effluent (from UASB reactor fed with sewage) as a means to reduce HFMCs clogging and fouling. Three PDMMs were used for the anaerobic effluent conditioning before two types of HFMCs (dense and microporous membranes). An automated backwash with a tap water cleaning protocol complemented with a chemical cleaning protocol (NaOH and citric acid) was applied for fouling control. The microporous HFMC could not maintain a stable performance (D-CH4 and S2− removal drop of 30 % and 40 %, respectively, in 10 days of operation), arguably due to membrane wetting, meanwhile the dense HFMC showed a more stable behaviour (removal efficiencies close to 100 % and 90 % for S2− and D-CH4, respectively in >30 days). The water backwash removed an important fraction of the entrapped organic solids. Meanwhile, the NaOH cleaning was efficient in removing inorganic compounds. Citric acid contributed to the removal of calcium and phosphate.
URI: http://www.repositorio.ufop.br/jspui/handle/123456789/17884
metadata.dc.identifier.uri2: https://www.sciencedirect.com/science/article/pii/S2214714423001101
metadata.dc.identifier.doi: https://doi.org/10.1016/j.jwpe.2023.103593
ISSN: 2214-7144
Appears in Collections:DEQUI - Artigos publicados em periódicos

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