This study was conducted on optimization of biogas from fresh cassava peels and fresh cow dung using sodium hydroxide (NaOH). The possibility of producing biogas from fresh cassava peels and fresh cow dung waste was investigated. Fresh cassava peel and fresh cow dung was used in the study. The feed stocks fresh cassava peels, fresh cow dung and fresh cassava peel mixed with fresh cow dung were charged into the bio-digester and used to investigate the anaerobic digestion in generating biogas for 20days retention period. The digesters were charged separately with these wastes in the ratio of 1:2, 1:3 and 1:3 of waste to water respectively. Pretreatment chemical, (NaOH) solution was used in pre-treating the fresh cassava peel and fresh cow dung slurry. The volume of biogas produced were monitored and recorded daily. The result obtained from the biogas production showed that fresh cow dung produced the highest methane content of 67.9 percent, followed by the mixture of fresh cassava peel and fresh cow dung with 59.7 percent methane content and fresh cassava peels has the least methane content of 51.4 percent. The results also showed that the cow dung also had the highest cumulative biogas yield of 93.3litres, followed by the mixture of cassava peel and cow dung with cumulative volume of 73.8litres and the least was cassava peels with cumulative volume of 61.3litres within the same retention period of 20days. Overall results indicate that these wastes which are always available could be source of renewable natural gas if properly treated.

Keywords : Biogas, Fresh Cassava Peels, Fresh Cow Dung, Sodium Hydroxide.