[Objective] This study was conducted to perform harmless resourceful treatment to animal dung. [Method] With fresh cow dung, rabbit dung and bear dung as fermentation materials, the effects of different temperatures a...[Objective] This study was conducted to perform harmless resourceful treatment to animal dung. [Method] With fresh cow dung, rabbit dung and bear dung as fermentation materials, the effects of different temperatures and initial pH values of materials on the biogas production process and biogas yield were investi- gated. [Result] The fermentation of cow dung, rabbit dung and bear dung all pro- duced biogas, and the biogas yield was in positive correlation with carbon-nitrogen ratio. The methane-producing bacteria were very sensitive to the initial pH of fer- mentation material. The adjustment of the temperature and initial pH of fermentation materials had no greater effect on the gas production cycle, but could change the gas production process and total biogas yield. [Conclusion] This study will provide a data basis for the production of biogas from the fermentation of animal dung.展开更多
文摘[Objective] This study was conducted to perform harmless resourceful treatment to animal dung. [Method] With fresh cow dung, rabbit dung and bear dung as fermentation materials, the effects of different temperatures and initial pH values of materials on the biogas production process and biogas yield were investi- gated. [Result] The fermentation of cow dung, rabbit dung and bear dung all pro- duced biogas, and the biogas yield was in positive correlation with carbon-nitrogen ratio. The methane-producing bacteria were very sensitive to the initial pH of fer- mentation material. The adjustment of the temperature and initial pH of fermentation materials had no greater effect on the gas production cycle, but could change the gas production process and total biogas yield. [Conclusion] This study will provide a data basis for the production of biogas from the fermentation of animal dung.
