Intermittent operation of UASB reactors treating wastewater polluted with organic solvents: process performance and microbial community evaluation
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Intermittent operation of UASB reactors treating wastewater polluted with organic solvents: process performance and microbial community evaluation

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Intermittent operation of UASB reactors treating wastewater polluted with organic solvents: process performance and microbial community evaluation

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dc.contributor.author Torres, K.
dc.contributor.author Álvarez Hornos, Francisco Javier
dc.contributor.author Ferrero Aguar, Pablo
dc.contributor.author Gabaldón García, Carmen
dc.contributor.author Marzal Doménech, Paula
dc.date.accessioned 2019-09-16T13:41:12Z
dc.date.available 2020-05-07T04:45:05Z
dc.date.issued 2019
dc.identifier.uri https://hdl.handle.net/10550/71537
dc.description.abstract The effect of intermittent feeding on the treatment of wastewater polluted with ethanol, ethyl acetate and 1-ethoxy-2-propanol in anaerobic upflow sludge blanket reactors was investigated. Three laboratory-scale reactors, one periodically supplemented with chitosan, were operated in an intermittent pattern (16 hours per day; 5 days per week) during 5 months. Removal efficiencies higher than 94% were obtained at organic loading rates up to 50 kg COD m−3 d−1. The addition of chitosan positively affected the specific methanogenic activity of the granular sludge. Although partial deterioration of the granules was observed, it was not correlated with variations in the production of extracellular polymeric substances, the percentage of granules remained between 57 and 84%. Microbial community analysis showed the prevalence of bacteria of the genus Geobacter and archaea of the Methanocorpusculum genus were the most abundant methanogens, suggesting that hydrogenotrophic methanogenesis, with the syntrophic oxidation of the substrate, was an important pathway for solvent degradation.
dc.language.iso eng
dc.relation.ispartof Environmental Science-Water Research & Technology, 2019, vol. 5, p. 1270-1284
dc.rights.uri info:eu-repo/semantics/openAccess
dc.source Torres, K. Álvarez Hornos, Francisco Javier Ferrero Aguar, Pablo Gabaldón García, Carmen Marzal Doménech, Paula 2019 Intermittent operation of UASB reactors treating wastewater polluted with organic solvents: process performance and microbial community evaluation Environmental Science-Water Research & Technology 5 1270 1284
dc.subject Aigua Contaminació
dc.subject Aigües residuals
dc.title Intermittent operation of UASB reactors treating wastewater polluted with organic solvents: process performance and microbial community evaluation
dc.type info:eu-repo/semantics/article
dc.date.updated 2019-09-16T13:41:12Z
dc.identifier.doi https://doi.org/10.1039/C9EW00195F
dc.identifier.idgrec 134077
dc.embargo.terms 1 year

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