Simultaneous biogas and biogas slurry production from co-digestion of pig manure and corn straw: Performance optimization and microbial community shift

被引:98
作者
Ning, Jing [1 ,2 ]
Zhou, Mingdian [1 ,2 ]
Pan, Xiaofang [1 ]
Li, Chunxing [3 ]
Lv, Nan [1 ,2 ]
Wang, Tao [1 ,2 ]
Cai, Guanjing [1 ]
Wang, Ruming [1 ,2 ]
Li, Junjie [1 ,2 ]
Zhu, Gefu [1 ]
机构
[1] Chinese Acad Sci, Key Lab Urban Pollutant Convers, Inst Urban Environm, Xiamen 361021, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
[3] Tech Univ Denmark, Dept Environm Engn, DK-2800 Lyngby, Denmark
基金
中国国家自然科学基金;
关键词
Agricultural biomass waste; Anaerobic co-digestion; Biogas; Biogas slurry; Microbial community shift; ORGANIC LOADING RATE; TOTAL SOLIDS CONTENT; MESOPHILIC ANAEROBIC-DIGESTION; RICE STRAW; LIGNOCELLULOSIC BIOMASS; METHANE PRODUCTION; FEEDSTOCK RATIO; LIQUID FRACTION; ENERGY CROPS; WASTE;
D O I
10.1016/j.biortech.2019.02.122
中图分类号
S2 [农业工程];
学科分类号
0828 ;
摘要
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.
引用
收藏
页码:37 / 47
页数:11
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