Enhanced Biogas Production Using Anaerobic Co-digestion of Animal Waste and Food Waste: A Review

Abstract

The current review is based on various reports that utilize a variety of kitchen waste & cafeteria leftovers like banana peels, orange peels, onion residues, and kiwi peels and their procedure of methane production under varied conditions. This review also covers the anaerobic digestion [AD] process which is reported to enhance biogas production under enhanced nitrogen supply such as ammonium chloride. We also covered an analysis of biogas production utilizing a mixture of cow dung slurry and kitchen refuse at various environmental conditions. Combining food waste and cow manure through anaerobic co-digestion can generate renewable biogas, reduce environmental impact and improve methane quality, making it a viable method for enhancing biogas production efficiency. Biogas derived from fruit waste and cow manure through anaerobic co-digestion shows increased production compared to processing fruit waste alone. Some factors affecting biogas production include temperature, pH levels and microbial activity. The study explores the dual functionality of fruit waste as an energy source and organic fertilizer. Combining fruit waste and cow manure under mesophilic conditions enhances biogas production. The study suggests that biogas production can improve agricultural practices, reduce environmental impact and serve as an alternative to traditional fuels like firewood.