Abstract
Abstract: This paper aimed to study the biogas production from kitchen wastes mixed with cattle dung. A vertical bench scale biogas digesters were constructed. Each three of them were replicates and their average biogas yields were recorded. The mixing ratios were 75%, 50% and 25% of kitchen wastes to the total slurry. The pH, alkalinity and temperature were measured during the experiments. It was found that digestion process was sensitive to temperature changes. Also, the pH and alkalinity were increasing over time. Moreover, it was found that the mixing ratio of 75% kitchen wastes to the total slurry enhanced the biogas production by 17.3% in comparison to the ratio of 25% kitchen wastes.
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