The conventional fixed dome type Deenbandhu biogas plant designs have been successfully modified under AICRP on RES for digestion of cattle dung in solid-state condition (TSC 16%). Twenty one demonstration plants of solid state Deenbandhu biogas plants of 2, 3, 4 and 6 m3/d capacities have recently been set-up at selected farmers’ sites in Anand, Bharuch, Kheda and Vadodara districts of Gujarat. All plants are working satisfactorily and the beneficiaries found satisfied with the quality of construction, quantity and quality of the gas produced and overall performance of their plants. The farmers reportedly fed 50 -70% less water than the plants of common designs. The gas is generally being used for thermal applications. Duration of biogas use was found varying from 3 - 7 hours/day. Total cost of setting-up 2, 3, 4 and 6 m3 capacity plants in central Gujarat has been estimated to be Rs. 17,232, 21,209, 26,108 and 32,282, respectively.
Biogas, Biogas plants, Solid state, Anaerobic digestion
