P-220 生物的超高温可溶化による高効率メタン発酵(ポスター発表)

抄録

A new strategy was investigated for improvement of the anaerobic digestion (AD) efficiency. Before being anaerobically digested, coffee waste or sewage sludge was mixed with food factory waste or garbage and pretreated at 80℃ in the presence of thermophilic microorganisms from an AD reactor. Semicontinuous experiments were conducted using a thermophilic reactor combined with a hyper-thermophilic pre-treatment reactor. In the case of coffee waste, the methane yield and VS reduction increased from 263 to 355mL methane/(g VS)and from 75 to 87%, respectively. In the case of sewage sludge AD, the effluent VSS/influent VS ratio decreased by 6% and the methane yield increased by 8% when hyperthernophilic pre-treatment was added.