ANAEROBIC GAS LIFT REACTOR (AGR) – A HIGH RATE ANAEROBIC DIGESTER FOR THE GENERATION OF BIOGAS AND BIO MANURE FROM FOOD
WASTE

Dr A. Gangagni Rao

ISSN: ISSN 2472-0518

Recherche pétrolière et gazière

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ANAEROBIC GAS LIFT REACTOR (AGR) ? A HIGH RATE ANAEROBIC DIGESTER FOR THE GENERATION OF BIOGAS AND BIO MANURE FROM FOOD WASTE

Dr A. Gangagni Rao

High rate biomethanation of food waste (FW) with anaerobic gas lift reactor (AGR) for the simultaneous generation of biogas and bio-manure was examined in laboratory scale reactors. The experimentations divulged that, FW having an average total solids (TS) and volatile solids (VS) in the range of 15 to 18 % and 10 to 14%, yielded biogas of 0.5 to 0.6 m3/(kg VS reduced) and bio-manure of 0.3 to 0.4 kg/(kg FW). M/s Ahuja Engineering Services Pvt.Ltd, Hyderabad has installed a plant at one of the kitchens of AkshayaPatra Foundation at Bellary, Karnataka for the generation of biogas and bio-manure from the FW. The plant is based on AGR – a high rate biomethanation technology developed by CSIR-IICT and the aim of this plant is to serve a sustainable technology to provide a scientific waste disposal system to the kitchen FW as well as to utilize the clean fuel (biogas) produced as a cooking fuel to replace LPG. Aproximately1000 kg of food waste and 500 litres of organic wastewater (boiled rice water/gruel water) are used for the generation of 80 to 100 m3 of biogas per day to replace 40 to 50 kg of LPG.