Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research)
Online ISSN : 2185-6648
ISSN-L : 2185-6648
Paper (In Japanese)
REDUCTION OF GREENHOUSE EFFECT GAS BY RECYCLING OF UNUSED BIOMASS WASTE IN AMAKUSA AREA
Takahito INOUEToshihiko MATSUTO
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2013 Volume 69 Issue 1 Pages 37-45

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Abstract
 In this study, reduction of greenhouse effect gas in Amakusa City, Kumamoto, was estimated by assuming several scenario of disposal and recycling of unused biomass waste. The population of Amakusa City is approximately 90,000 people, but because Amakusa City was born by a merger, there are five incineration facilities and three sewage treatment facilities. In this study, three scenarios were supposed: composting, methane fermentation, and composting plus methane fermentation. Old incinerators and sewage treatment facilities were rebuilt as the central facility, and windrow type composting of animal waste was changed to aerated composting. As a result, it became clear that introduction of the methane fermentation was effective in reduction of the greenhouse gas because of energy recovery as electricity and high emission from composting due to nitrous oxide emission. The effect of uncertainty in emission factors which are commonly used for greenhouse emission, and variability consumption of fuel and electricity in facilities were also discussed.
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© 2013 Japan Society of Civil Engineers
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