| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2016: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2014: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
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| Outline of Final Research Achievements |
The effectiveness of ethanol fermentation pretreatment for methane fermentation of food waste rich in carbohydrates was investigated in this study. Expected effects are increased methane ratio in biogas and miniaturization of methane fermentation reactor by improvement of substrate biodegradability. Batch, sequential batch and continuous experiments are conducted using artificial food waste as substrate.
It was found that pretreatment enables following; (1) Methane ratio in biogas rose from 10% to 15%. (2) Decreased risk of rancidity by lowering pH which enables operation on high loading conditions and miniaturization of methane fermentation reactor. (3) Excess sludge decreased. (4)Increased effectiveness,as well as stable operation, is obtained over long term.
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