Optimization of biogas production by co-digesting whey with diluted poultry manure

dc.contributor.author	Γελεγένης, Ιωάννης Ι.	el
dc.contributor.author	Γεωργακάκης, Δημήτριος	el
dc.contributor.author	Αγγελιδάκη, Ειρήνη	el
dc.contributor.author	Μαυρής, Β.	el
dc.date.accessioned	2015-04-28T07:20:15Z
dc.date.available	2015-04-28T07:20:15Z
dc.date.issued	2015-04-28
dc.identifier.uri	http://hdl.handle.net/11400/9131
dc.rights	Αναφορά Δημιουργού-Μη Εμπορική Χρήση-Όχι Παράγωγα Έργα 3.0 Ηνωμένες Πολιτείες	*
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/3.0/us/	*
dc.source	http://www.sciencedirect.com/	en
dc.subject	Poultry manure
dc.subject	Cheese whey
dc.subject	Τυρί τυρογάλακτος
dc.subject	Κόπροι πουλερικών
dc.title	Optimization of biogas production by co-digesting whey with diluted poultry manure	en
heal.type	journalArticle
heal.classification	Technology
heal.classification	Bioenergy
heal.classification	Τεχνολογία
heal.classification	Βιοενέργεια
heal.classificationURI	http://zbw.eu/stw/descriptor/10470-6
heal.classificationURI	http://lod.nal.usda.gov/17247
heal.classificationURI	N/A-Τεχνολογία
heal.classificationURI	N/A-Βιοενέργεια
heal.keywordURI	http://lod.nal.usda.gov/9312
heal.keywordURI	http://lod.nal.usda.gov/24515
heal.identifier.secondary	doi:10.1016/j.renene.2006.11.015
heal.language	en
heal.access	campus
heal.recordProvider	Τ.Ε.Ι Αθήνας. Σχολή Τεχνολογικών Εφαρμογών. Τμήμα Μηχανικών Ενεργειακής Τεχνολογίας Τ.Ε.	el
heal.publicationDate	2007
heal.bibliographicCitation	Gelegenis, J., Georgakakis, D., Angelidaki, I. and Mavris, V. (October 2007). Optimization of biogas production by co-digesting whey with diluted poultry manure. Renewable Energy. 32(13). pp. 2147-2160. Elsevier: 2007. Available from: http://www.sciencedirect.com/science/article/pii/S0960148106003417 [Accessed on 19/01/2007]	en
heal.abstract	A series of laboratory experiments were performed in continuously stirred tank reactors at mesophilic conditions, fed semi-continuously with various mixtures of diluted poultry manure and whey. Co-digestion of whey with manure was proved to be possible without any need of chemical addition up to 50% participation of whey (by volume) to the daily feed mixture. Up to this point, specific biogas production (L/kg VSin) remained roughly unchanged at the various whey fractions added in the feed mixture, mainly due to the lower chemical oxygen demand (COD) of whey compared to that of manure. At whey fractions above 50%, the reactor turned to be unstable, as shown by the considerable decrease in pH and biogas production. The experiments were scaled up to a continuously stirred pilot tank reactor, which had previously been acclimated to poultry manure digestion. Whey was gradually introduced in the feed, at increasing rates, replacing equivalent volumes of manure, in such a way, that total COD of the feed remained constant. For an hydraulic retention time of 18 days at 35 °C and organic loading rate of 4.9 g COD/LR d, it was found that biogas production increased from 1.5 to 2.2 L/LR d (almost 40%). This could be mainly attributed to the higher biodegradability of carbohydrates (main constituent of whey) compared to lipids (main constituent of manure) and to the correction (increase) of C:N ratio.	en
heal.publisher	Elsevier	en
heal.journalName	Renewable Energy	en
heal.journalType	peer-reviewed
heal.fullTextAvailability	true