Optimization of Biogas Yield through co-digestion of Cassava Biomass and Vegetable & Fruits waste at Mesophilic Temperatures

Nathaniel Sawyerr, Cristina Trois, Tilahun Workneh

Abstract


Biogas is a clean and renewable form of energy accessible to low-income households through anaerobic digestion of readily available organic waste. The objective of this study is to investigate the performance and optimisation of co-digesting of cassava biomass and vegetable & fruits at different ratios in a single stage fed-batch anaerobic digester for biogas production. The physical pre-treatment of the both substrates was by milling the feedstock into small pieces prior to anaerobic fermentation. Anaerobic digestion of the mix of cassava biomass and vegetable & fruit was investigated in a 600 ml digester for 31 days under mesophilic condition (37ºC). Bio-methane potential of Cassava Biomass co-digested with vegetable & fruit ranged from 1124.26 to 1641.82 mL CH4/g VS. Co-digestion of CB and V&F with inoculum at ratio of 40:60 achieved the maximum methane yield of 1641.82 mL/g VS which was 23.08% higher than that of the mono-digestion feedstocks.

Keywords


Cassava Biomass; Co-digestion; Mon-digestion; Vegetable & Fruit;Biomass energy

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References


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DOI (PDF): https://doi.org/10.20508/ijrer.v9i2.9151.g7665

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