Abstract 

There is increasing international interest in developing low carbon renewable energy technologies. Biomass is increasingly being utilized as an energy source throughout the world. Several modern technologies have been developed that convert biomass to bioenergy. Anaerobic digestion is a mature energy technology for converting biomass to biogas, which is a renewable primary energy source. Experiments were conducted in a small scale anaerobic batch digester under mesophilic range (28-35 ^oC) for 21 days. Comparative studies of biogas gas production were performed using different ratios of waste with cow dung as well types of waste. Garden waste and paper waste were used with the ratio 1:1 and 2:1 with cow dung, respectively. By considering direct natural resources as inoculums, maximum gas production was found with a mixture of leaf and paper waste and cow dung (1:1:1) reactor.