Evaluation of hydrogen and methane production from municipal solid wastes with different compositions of fat,protein, cellulosic materials and the other carbohydrates |
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| Authors: | Takuro Kobayashi Kai-Qin Xu Yu-You Li Yuhei Inamori |
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| Affiliation: | 1. Center for Material Cycles and Waste Management Research, National Institute for Environmental Studies, Onogawa 16-2, Tsukuba, Ibaraki 305-8506, Japan;2. School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;3. Graduate School of Environmental Studies, Tohoku University, Sendai 980-8579, Japan;4. Faculty of Symbiotic Systems Science, Fukushima University, Fukushima 960-1248, Japan |
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| Abstract: | Municipal solid wastes (MSW) collected in Kyoto city were carefully separated, and the waste-type proportion in MSW was surveyed. A hydrogen/methane fermentation batch experiment was conducted under thermophilic condition using twenty different types of MSW components. Biodegradable wastes in the MSW almost consist of vegetable kitchen waste, and the characteristics of hydrogen and methane fermentation of MSW were similar to that of vegetable kitchen waste. Hydrogen production per g VS added was considerably positively correlated with easily degradable carbohydrates concentration and negatively correlated with cellulosic materials concentration. The various feedstocks could be classified into four groups according to nutrient composition (protein, fat, cellulosic materials and easily degradable carbohydrates), and the feedstocks belonging to carbohydrates rich group showed higher hydrogen yields than the other feedstocks. Rough hydrogen yield could be easily predicted by concentration of easily degradable carbohydrates. |
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| Keywords: | Hydrogen fermentation Methane fermentation Municipal solid wastes Nutrient balance |
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