INVESTIGATION ON EDIBLE DE-OILED AND NON EDIBLE DE-OILED CAKES IN ANAEROBIC CODIGESTION FOR BIOGAS PRODUCTION

To investigate the feasibility of generating biogas in anaerobic co-digestion of edible and non edible cakes, were evaluated with the influence of working parameters with methane potential was analysis. De-oiled cake such as groundnut (GD), cocoanut (CT), mustard (MD) and sesame (SE) are co-digested with non-edible de-oiled cakes jatropha,(JA) pongamia (PA) mahua (MA) and neem cake (NM). The experiment study was carried out under an anaerobic digestion process as case1 case2 case3 and case4 with GD co substrate with JA, CT with PA, MD co-digested with MA and SE with NM under mesophilic temperature condition. The higher biogas production potential of case2 was observed 4.80 liters followed by case2, case3 and case4. The cumulative bio-gas yield over 21 days of hyro retention time period was found as 32.24 liters with 150 liters of feeding substrate. However in case1, case3, and case4 total volume of gas was found 28.92, 24.36 and 20.18 liters respectively. The observed average specific methane yield with GD/JA substrate was reported as 48 % -68% over 21 days HRT periods.