title: Influence of the ultrasound pretreatment on anaerobic digestion of cattle manure, food waste and crude glycerine.
abstract: To increase the production of methane, when cattle manure (CM) is digested, pretreatments can be applied and/or the manure can be co-digested with other wastes. In this research work, a mixture of CM, food waste (FW) and raw glycerine (Gly) in a proportion in weight of 87% CM, 10% FW and 3% Gly was digested, (a) without pretreatment and (b) with pretreatment by ultrasound, applying a sonication energy of 1040 kJ/kg total solids. Specific methane production was 290 L CH4/kg volatile solids (VS) without pretreatment and 520 L CH4/kg VS with pretreatment. With respect to the volumetric methane production, 1.07 L CH4/Lreactor.day was produced in the first case, and in the second case, 1.98 L CH4/Lreactor.day. We can conclude that the application of ultrasound pretreatment significantly improved the production of biogas.
authors.affiliation: a Department of Chemical and Environmental Engineering , University of Oviedo , Gijón , Spain.
authors.forename: Pedro
authors.initials: P
authors.lastname: Ormaechea
authors.affiliation: a Department of Chemical and Environmental Engineering , University of Oviedo , Gijón , Spain.
authors.forename: Leonor
authors.initials: L
authors.lastname: Castrillón
authors.affiliation: a Department of Chemical and Environmental Engineering , University of Oviedo , Gijón , Spain.
authors.forename: Elena
authors.initials: E
authors.lastname: Marañón
authors.affiliation: a Department of Chemical and Environmental Engineering , University of Oviedo , Gijón , Spain.
authors.forename: Yolanda
authors.initials: Y
authors.lastname: Fernández-Nava
authors.affiliation: a Department of Chemical and Environmental Engineering , University of Oviedo , Gijón , Spain.
authors.forename: Luis
authors.initials: L
authors.lastname: Negral
authors.affiliation: a Department of Chemical and Environmental Engineering , University of Oviedo , Gijón , Spain.
authors.forename: Laura
authors.initials: L
authors.lastname: Megido
mesh_terms: D000693:Anaerobiosis; D000818:Animals; D001673:Biodegradation, Environmental; D019149:Bioreactors; D002417:Cattle; D005735:Garbage; D005990:Glycerol / Q000032:analysis* / Q000378:metabolism; D008372:Manure / Q000032:analysis*; D000069453:Ultrasonic Waves; D014865:Waste Disposal, Fluid / Q000379:methods*
chemical_list: D008372:Manure; D005990:Glycerol
keywords: Biogas; cattle manure; food waste; raw glycerine; ultrasound