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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.citation	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.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.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	journal article	es_ES
dc.date.updated	2019-09-16T13:41:12Z
dc.identifier.doi	10.1039/C9EW00195F
dc.identifier.idgrec	134077
dc.embargo.terms	1 year
dc.rights.accessRights	open access	es_ES