猪粪和玉米秸秆混合厌氧消化同步产沼气和沼液：性能优化与微生物群落变化。
Simultaneous biogas and biogas slurry production from co-digestion of pig manure and corn straw: Performance optimization and microbial community shift.
机构信息
Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; University of Chinese Academy of Sciences, Beijing 100049, China.
Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China.
出版信息
Bioresour Technol. 2019 Jun;282:37-47. doi: 10.1016/j.biortech.2019.02.122. Epub 2019 Feb 28.
Anaerobic co-digestion (AcoD) is proved as an effective approach to solving a bottleneck problem of the low biogas yield in agricultural biomass waste treatment with anaerobic digestion (AD) technology. The present study investigated the effect of C/N radio, organic loading rate (OLR) and total solids (TS) contents on reactor performance in AcoD of pig manure and corn straw for simultaneous biogas and biogas slurry production. It was found that the highest biogas production was obtained at C/N ratio of 25, while the best biogas slurry performance was achieved at C/N ratio of 35. And high OLR and TS resulted in good performances in both biogas production and biogas slurry. At last, the microbial community analysis suggested that Bacteroidetes played a significant role in AcoD process. Acetoclastic methanogenesis was the main pathway for methane production in the stable system. And changing operational parameters could transform and shift the microbial community.
厌氧共消化（AcoD）被证明是解决农业生物质废物厌氧消化（AD）技术中沼气产量低的瓶颈问题的有效方法。本研究考察了 C/N 比、有机负荷率（OLR）和总固体（TS）含量对猪粪和玉米秸秆 AcoD 中同时产沼气和沼液的反应器性能的影响。结果表明，在 C/N 比为 25 时获得了最高的沼气产量，而在 C/N 比为 35 时获得了最佳的沼液性能。高 OLR 和 TS 使沼气生产和沼液都有良好的性能。最后，微生物群落分析表明，拟杆菌门在 AcoD 过程中起重要作用。乙酸营养型产甲烷作用是稳定系统中甲烷产生的主要途径。改变操作参数可以改变和转移微生物群落。
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