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Anaerobic degradation of 2-propanol: Laboratory and pilot-scale studies

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Anaerobic degradation of 2-propanol: Laboratory and pilot-scale studies

dc.contributor.author	Vermorel, N.
dc.contributor.author	San-Valero, Pau
dc.contributor.author	Izquierdo Sanchis, Marta
dc.contributor.author	Gabaldón García, Carmen
dc.contributor.author	Peñarrocha Oltra, Josep Manuel
dc.date.accessioned	2017-07-18T14:03:09Z
dc.date.available	2017-07-18T14:03:09Z
dc.date.issued	2017
dc.identifier.uri	http://hdl.handle.net/10550/59642
dc.description.abstract	The anaerobic degradation of 2-propanol, an important industrial solvent, was scaled-up from batch assays to a pilot expanded granular sludge bed (EGSB) reactor at 25 °C. Batch studies indicated that 2-propanol followed Haldane kinetics, with a maximum rate at 10 g COD L−1. Concentrations as high as 25 g COD L−1 did not inhibit the degradation of ethanol, a common co-solvent. Similar specific methanogenic activities (SMA) were obtained for water-solvent and water-brewery sludges (88 and 77 ml CH4 g-VS−1 d−1 at 5 g COD L−1). Continuous degradation showed a lag-phase of three weeks with water-brewery sludge. Increases in 2-propanol load from 0.05 to 0.18 kg COD kg-VS−1 d−1 caused a shift from the consumption of soluble matter to methane production, indicating polyhydroxybutyrates (PHB) accumulation. Conversely, smooth increases of up to 0.29 kg COD kg-VS−1 d−1 allowed 2-propanol degradation without PHB accumulation. The slowdown rate of 2-propanol-oxidizer and acetate-utilizing methanogen bacteria below 20 °C adversely impacted both removal and CH4 yield.
dc.language.iso	eng
dc.relation.ispartof	Chemical Engineering Science, 2017, vol. 172, p. 42-51
dc.rights.uri	info:eu-repo/semantics/openAccess
dc.source	Vermorel, N. San-Valero, Pau Izquierdo Sanchis, Marta Gabaldón García, Carmen Peñarrocha Oltra, Josep Manuel 2017 Anaerobic degradation of 2-propanol: Laboratory and pilot-scale studies Chemical Engineering Science 172 42 51
dc.subject	Alcohols
dc.subject	Productes químics
dc.title	Anaerobic degradation of 2-propanol: Laboratory and pilot-scale studies
dc.type	info:eu-repo/semantics/article
dc.date.updated	2017-07-18T14:03:10Z
dc.identifier.doi	https://doi.org/10.1016/j.ces.2017.06.021
dc.identifier.idgrec	119971