Enhancement of thermophilic anaerobic sludge digestion by 70ºC pre-treatment : energy considerations

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dc.contributor.author	Ferrer, Ivet
dc.contributor.author	Serrano, E.
dc.contributor.author	Ponsá Salas, Sergio
dc.contributor.author	Vázquez Lima, Felícitas
dc.contributor.author	Font i Segura, Xavier
dc.date	2009
dc.identifier	https://ddd.uab.cat/record/163070
dc.identifier	urn:oai:ddd.uab.cat:163070
dc.identifier	urn:recercauab:ARE-48597
dc.identifier	urn:oai:egreta.uab.cat:publications/a6fea7db-6c15-4974-a161-1cc8ebc1da12
dc.identifier	urn:scopus_id:66749099069
dc.format	application/pdf
dc.language	eng
dc.publisher
dc.relation	Journal of residuals science & technology ; Vol 6, No. 1 (Jan. 2009), p. 11-18
dc.rights	open access
dc.rights	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
dc.rights	https://creativecommons.org/licenses/by/3.0/
dc.subject	Biogas
dc.subject	Biomethanation
dc.subject	Biosolid
dc.subject	Renewable energy
dc.subject	Thermal pre-treatment
dc.title	Enhancement of thermophilic anaerobic sludge digestion by 70ºC pre-treatment : energy considerations
dc.type	Article
dc.description.abstract	Altres ajuts: REN2002-00926/TECNO
dc.description.abstract	The objective of this work was to investigate the effect of a low temperature pre-treatment (70°C) on the thermophilic anaerobic digestion of sewage sludge. Experimental results were used for the calculation of theoretical energy balances of full-scale digesters with and without pre-treatment step. The 70°C sludge pre-treatment increased sludge solubilization by 10 times and enhanced volatile fatty acids generation. Biogas production increased up to 30-40% and methane content in biogas from 64 to 68-70%. Theoretical calculations showed that additional surplus energy production would be expected by incorporating a 70°C pre-treatment step to a thermophilic reactor.

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