Semi-continuous co-digestion of solid slaughterhouse waste, manure, and fruit and vegetable waste

René Alvarez and Gunnar Lidén

Renewable Energy, 2008, vol. 33, issue 4, 726-734

Abstract: The potential of semi-continuous mesophilic anaerobic digestion (AD) for the treatment of solid slaughterhouse waste, fruit-vegetable wastes, and manure in a co-digestion process has been experimentally evaluated. A study was made at laboratory scale using four 2L reactors working semi-continuously at 35°C. The effect of the organic loading rate (OLR) was initially examined (using equal proportion of the three components on a volatile solids, VS, basis). Anaerobic co-digestion with OLRs in the range 0.3–1.3kgVSm−3d−1 resulted in methane yields of 0.3m3kg−1VS added, with a methane content in the biogas of 54–56%. However, at a further increased loading, the biogas production decreased and there was a reduction in the methane yield indicating organic overload or insufficient buffering capacity in the digester.

Keywords: Anaerobic; Biogas; Co-digestion; Manure; Slaughterhouse waste; Vegetable waste (search for similar items in EconPapers)
Date: 2008
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Citations: View citations in EconPapers (25)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:33:y:2008:i:4:p:726-734

DOI: 10.1016/j.renene.2007.05.001

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