Energy production from anaerobic co-digestion processing of cow slurry, olive pomace and apple pulp

Vincenzo Riggio, Elena Comino and Maurizio Rosso

Renewable Energy, 2015, vol. 83, issue C, 1043-1049

Abstract: This paper deals with anaerobic co-digestion of cow slurry, apple pulp and olive pomace mixture and results obtained shown that the production of methane by co-digestion of cow slurry, olive pomace and apple pulp is not only possible but also economically and energetically attractive. Tests were performed with a pilot scale anaerobic digester, 128 l in volume, operating under batch and fed-batch condition. The biogas production, methane yield and quality, plus other operating parameters were evaluated under four feeding regimes, to simulate a real situation. Stable biogas production was obtained of about 400 l/kg Volatile Solids at a Hydraulic Retention Time of 40 days in a mixture containing 85% cow slurry, 10% olive pomace and 5% apple pulp (% by volume). The percentage of methane inside the biogas was around 52% and the maximum COD removal was 63%.

Keywords: Anaerobic co-digestion; Methane yield; COD reduction; Digestate yield test; Energy production (search for similar items in EconPapers)
Date: 2015
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Citations: View citations in EconPapers (11)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:83:y:2015:i:c:p:1043-1049

DOI: 10.1016/j.renene.2015.05.056

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