Analysis of Biomethanation Process from market waste to generate bio energy

Abstract. In this study was to incur that the biogas production from traditional market wastes
which were represented by cabbage stem and carrot peeling, white mustard were under taken in
a laboratory experiment. To produce biogas, the raw material such as cabbage stem and carrot
peeling, white mustard and carrot peeling were mixed until C/N ratio close 30:1. Inoculums
starter cow dung is put into digester then water is added until 500 liters. The initial pH is
measured at throughout the experiments. The anaerobic digestion process is conducted at
temperature of 30ºC and the volumes, pH of the biogas yield were observed daily. Biogas yield
and cumulative biogas, total solids were analyzed 35 days. The cumulative biogas yield at the 32th day of digestion for cabbage stem and carrot peeling (exp1), white mustard and carrot peeling (exp2) were 2140 liters and 2421 liters respectively. The highest daily biogas yield is achieved on the 22st day of digestion which is found 123 liters and 141 liters respectively. In the first 10 days, the pH level is observed decrease and increase after the day of 21. Although at the end of digestion period the pH will fall down.