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Methane Fermentation of Artificial Food Waste using Biological Ethanol Fermentation Pretreatment
( Yasunori Kosaki ),( Munetaka Ishikawa ) 한국폐기물자원순환학회(구 한국폐기물학회) 2015 한국폐기물자원순환학회 3RINCs초록집 Vol.2015 No.-
The effect of pretreatment by saccharification and ethanol fermentation on methane fermentation of food waste containing a high density of carbohydrates was studied. The ratio of methane and carbon dioxide in biogas from carbohydrates is the same stoichiometrically even if pretreatment is performed. The methane ratio in methane fermentation increases to 75% when the carbohydrate is converted to ethanol through pretreatment.In addition, this method is expected to control the generation of VFA (Volatile fatty acids) composed of three or more carbon atoms, by conversion to smaller molecules such as ethanol. To verify these effects, batch experiments were performed using artificial food waste as a substrate. It was found that the methane concentration in the biogas increases by about 10% without ethanol inhibiting the activation of biomass Further, information on the possibility of high-load operations by suppressing VFA generation was also obtained.