This is inline with the report of Alkan-Ozkaynak and Karthikayan (2010) where the highest biogas yields were observed at pH 8. The observed increase in pH could have contributed to the reduction in pathogens in the biofertilizer digestate as most pathogens cannot tolerate high pH levels. Yun et al. (2000) have also reported that a large amount pathogen is dest royed by the metabolic heat generated by microorganisms during anaerobic digestion. Temperature was observed to maintain mesophilic range (22-31 ‘C) throughout