2.3 Operation
Biogas production was started up by applying
with chopped pineapple peel solid waste consisted of initial COD of 20,000 mg/l. This raw material was composed to fill up to approximately 4.8 liters working volume of the reactor. Single stage batch processes were operated at ambient temperature with 2 times of mixing per day for 30 days. The effects of pH value of the system, carbon to nitrogen (C/N) ratio were performed through the experiments. The observation of total amount of