title: Influence of temperature and hydraulic retention on the production of volatile fatty acids during anaerobic fermentation of cow manure and maize silage.
abstract: The aim of this study was to verify the efficiency of a separate hydrolysis step by testing different working temperatures (37-55°C) and hydraulic retention times (two, four and six days) and by evaluating readily biodegradable carbon production. The fermentation products included primarily acetic, propionic and butyric acids. These acids can be easily converted into biogas or can be recovered in a biorefinery approach, for example, to produce polyhydroxyalkanoates. The optimal condition was found by applying an organic loading rate of 17.9gTVSm-3with a four-day retention time at 37°C for an acidification yield of 183.2gCODVFAkgVSfed-1.
authors: University Ca' Foscari of Venice, Department of Environmental Sciences, Informatics and Statistics, via Torino 155, I-30172 Mestre, Venice, Italy. Electronic address: cavinato@unive.it.
authors: Cristina
authors: C
authors: Cavinato
authors: University Ca' Foscari of Venice, Department of Environmental Sciences, Informatics and Statistics, via Torino 155, I-30172 Mestre, Venice, Italy.
authors: Cinzia
authors: C
authors: Da Ros
authors: University Ca' Foscari of Venice, Department of Environmental Sciences, Informatics and Statistics, via Torino 155, I-30172 Mestre, Venice, Italy.
authors: Paolo
authors: P
authors: Pavan
authors: University of Verona, Department of Biotechnology, Strada le Grazie 15, I-37134, Verona, Italy.
authors: David
authors: D
authors: Bolzonella
mesh_terms: D000693:Anaerobiosis; D000818:Animals; D056804:Biofuels; D019149:Bioreactors; D002417:Cattle; D005232:Fatty Acids, Volatile / Q000378:metabolism*; D005285:Fermentation; D006868:Hydrolysis; D008372:Manure; D012820:Silage; D013696:Temperature; D003313:Zea mays / Q000378:metabolism*
chemical_list: D056804:Biofuels; D005232:Fatty Acids, Volatile; D008372:Manure
keywords: Anaerobic digestion; Cow manure; Fermentation; Maize silage; Volatile fatty acid