Abstract One- and two-stage anaerobic digestion of food waste aimed at recovering methane (CH4) and hydrogen and methane (H2 + CH4), respectively, were compared in order to assess the potential benefits from the two-stage process in terms of overall energy recovery. Results suggest that a two-stage process where the first reactor is properly operated in order to achieve a significant net hydrogen production, may display a 20% comparatively higher energy recovery yield as a result, mainly, of enhanced methane production as well as of the associated hydrogen production. The highest methane production of the two-stage process was due to improved hydrolysis and fermentation of food waste, with increased amounts of volatile fatty acids being readily available to methanogenesis.

Energy recovery from one- and two-stage anaerobic digestion of food waste / De Gioannis, G.; Muntoni, A.; Polettini, Alessandra; Pomi, Raffaella; Spiga, D.. - In: WASTE MANAGEMENT. - ISSN 0956-053X. - STAMPA. - 68:(2017), pp. 595-602. [https://doi.org/10.1016/j.wasman.2017.06.013]

Energy recovery from one- and two-stage anaerobic digestion of food waste

POLETTINI, Alessandra;POMI, Raffaella;
2017

Abstract

Abstract One- and two-stage anaerobic digestion of food waste aimed at recovering methane (CH4) and hydrogen and methane (H2 + CH4), respectively, were compared in order to assess the potential benefits from the two-stage process in terms of overall energy recovery. Results suggest that a two-stage process where the first reactor is properly operated in order to achieve a significant net hydrogen production, may display a 20% comparatively higher energy recovery yield as a result, mainly, of enhanced methane production as well as of the associated hydrogen production. The highest methane production of the two-stage process was due to improved hydrolysis and fermentation of food waste, with increased amounts of volatile fatty acids being readily available to methanogenesis.
2017
Anaerobic digestion; food waste; one-stage; two-stage; hydrogen; methane
01 Pubblicazione su rivista::01a Articolo in rivista
Energy recovery from one- and two-stage anaerobic digestion of food waste / De Gioannis, G.; Muntoni, A.; Polettini, Alessandra; Pomi, Raffaella; Spiga, D.. - In: WASTE MANAGEMENT. - ISSN 0956-053X. - STAMPA. - 68:(2017), pp. 595-602. [https://doi.org/10.1016/j.wasman.2017.06.013]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1004174
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