PERFORMANCE EVALUATION OF JANATA AND DEENBANDHU-BIOGAS PLANTS

Performance of the Janata and Deenbandhu fixed dome biogas plants for annerobic digestion of dairy manure was evaluated under the conditions of a hilly region. In contrast to Janata, the Deenbandhu biogas plant was found to be not only cheaper on the basis of cost/m(3) rated capa city of the plant, but it also produced more gas per unit of manure fe d and per unit of digester volume in addition to maintaining a consist ent rate of gas production during subsequent years from initial chargi ng The higher production of gas by 28.5% and 12.5% per kg of manure fe d and 49.5% and 28.9% per m(3) of digester volume was observed fi om t his plant for highest 24 degrees C and lowest 14 degrees C digester te mperatures of the plants for the months of July and December respectiv ely.