Two-phase anaerobic digestion of spent tea leaves for biogas and manure generation.
Anaerobic digestion of spent tea leaves from an instant tea manufacturing factory was studied in a two-phase digester. The hydrolysis and acidification phase resulted in the formation of high organic strength liquid called leachate, with a chemical oxygen demand (COD) of 12,880 mg/l, within the retention time of 10 days. The leachate was tested in a batch methanaogensis reactor for biogas production. An average biogas yield of 0.48 m3/kg of COD destroyed was obtained with an average COD reduction of 93%. The biogas was analyzed for 73% methane content.
Goel
B
B
Tata Energy Research Institute, Darbari Seth Block, New Delhi, India. bgupta@teri.res.in
Pant
D C
DC
Kishore
V V
VV
D000693:Anaerobiosis / Q000502:physiology; D001673:Biodegradation, Environmental; D019149:Bioreactors; D019605:Euryarchaeota / Q000378:metabolism*; D006868:Hydrolysis; D008372:Manure / Q000382:microbiology*; D008697:Methane / Q000378:metabolism*; D018515:Plant Leaves / Q000737:chemistry / Q000382:microbiology; D013662:Tea / Q000737:chemistry / Q000382:microbiology*; D014866:Waste Products
D008372:Manure; D013662:Tea; D014866:Waste Products; D008697:Methane