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| Biogas production of rural organic wastes during anaerobic digestion |
| Received:November 10, 2015 |
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| KeyWord:anaerobic digestion;biogas;rural organic domestic waste;corn stover;cow manure |
| Author Name | Affiliation | E-mail | | WANG Yan-qin | Institute of Agricultural Resource and Environment, Shandong Academy of Agricultural Sciences, Jinan 250100
Shandong Provincial Key Laboratory of Agricultural Non-Point Source Pollution Controland Prevention, Jinan 250100 | | | FU Long-yun | Institute of Agricultural Resource and Environment, Shandong Academy of Agricultural Sciences, Jinan 250100 | | | YANG Guang | Institute of Agricultural Resource and Environment, Shandong Academy of Agricultural Sciences, Jinan 250100 | | | YUAN Chang-bo | Institute of Agricultural Resource and Environment, Shandong Academy of Agricultural Sciences, Jinan 250100 | | | LI Ming-hua | Water Supply Operation Area of Water and Power Supply Center, Huabei Oilfield Company, Cangzhou 062552, China | | | YAO Li | Institute of Agricultural Resource and Environment, Shandong Academy of Agricultural Sciences, Jinan 250100
Shandong Provincial Key Laboratory of Agricultural Non-Point Source Pollution Controland Prevention, Jinan 250100 | nkyyaoli@163.com |
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| Abstract: |
| Nowadays huge amount of organic wastes has been generated in rural area. Recycling these organic wastes is an interesting research topic. Here an experiment was conducted to produce biogas from rural domestic organic wastes by anaerobic digestion. Domestic organic wastes were anaerobically co-digested with corn stover and cow manure at different ratios(1:0:2, 1:0.5:1.5, 1:1:1, 1:1.5:0.5, and 1:2:0, by wet weight ratio) under mesophilic condition(35±1) ℃ and total solid(TS) content of 12%. Biogas production was much higher from three feedstocks than from two feedstocks. The highest biogas yield(278.92 mL·g-1) was obtained with 1:1:1 mixture. The digestion time was also influenced by the ratios of feedstocks. Increasing proportions of corn stover and cow manure extended the fermentation time. The fermentation time of mixture(1:0:2) was respectively 12, 15, 19, and 22 day shorter than that of mixtures 1:0.5:1.5, 1:1.5:0.5, and 1:2:0. The degradation of cellulose and hemicellulose was improved in the mixture systems. In conclusion, the optimal mixing ratio was 1:1:1. Our results would shed light on the operation of rural organic waste biogas project. |
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