Energy generation from anaerobic co-digestion of food waste, cow dung and piggery dung

[Display omitted] •Generation of biogas from food wastes, cow and piggery dungs was evaluated.•Food wastes, cow and piggery dungs were found to be rich in elemental compositions.•Co-digestion of the three wastes produced the highest biogas volume of 0.0488 L.•Co-digestion of food wastes and piggery...

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Bibliographic Details
Published in:Bioresource technology 2020-10, Vol.313, p.123694-123694, Article 123694
Main Authors: Oladejo, Oladipupo S., Dahunsi, Samuel O., Adesulu-Dahunsi, Adekemi T., Ojo, Samuel O., Lawal, Adedoyin I., Idowu, Eunice O., Olanipekun, Adewoye A., Ibikunle, Rotimi A., Osueke, Christian O., Ajayi, Olusegun E., Osueke, Ngozi, Evbuomwan, Ikponmwosa
Format: Article
Language:English
Subjects:
Anaerobic digestion
Biogas
Clean and affordable energy
Climate action
Cow dung
Food wastes
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Summary:[Display omitted] •Generation of biogas from food wastes, cow and piggery dungs was evaluated.•Food wastes, cow and piggery dungs were found to be rich in elemental compositions.•Co-digestion of the three wastes produced the highest biogas volume of 0.0488 L.•Co-digestion of food wastes and piggery dung showed highest digestion efficiency. The study investigated bioenergy generation from anaerobic co-digestion of food wastes (FW), cow dung (CD) and piggery dung (PD). The physicochemical parameters of the substrates were determined before and after digestion following standard procedures after mechanical pretreatment. Throughout the study, pH remained slightly alkaline while temperature varied between 26 and 32 °C. The highest cumulative biogas yield of 0.0488 L was recorded from the digestion of FW + CD + PD on the ninth day. After analyses, the highest methane content of 64.6 was obtained from the digestion of FW + PD while the lowest (54.0%) was from the digestion of FW only. Overall, cumulative biogas production for the four digestion regimes followed the order: FW + CD + PD, FW + PD, FW + CD and FW only respectively. Accumulation of VFAs was recorded at a slow rate during the digestions.
ISSN:0960-8524
1873-2976
DOI:10.1016/j.biortech.2020.123694