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Vertical distribution of microbial community and metabolic pathway in a methanogenic propionate degradation bioreactor
Li, Ying1; Sun, Yongming1,2; Yang, Gaixiu1; Hu, Keqin4; Lv, Pengmei1; Li, Lianhua1,3
2017-12-01
发表期刊BIORESOURCE TECHNOLOGY
卷号245页码:1022-1029
摘要The methanogenic propionate degradation consortia were enriched in a propionate-fed semi-continuous bioreactor. The microbial community shift with depth, the microbial network and its correlation with metabolic pathway were also investigated. The results demonstrated that the maximum organic loading rate (OLR) of the reactor was 2.5 g propionic acid (HPr) L-1 d(-1) with approximately 1.20 LL-1 d(-1) of volumetric methane production (VMP). The organisms in the enrichment were spanning 36 bacterial phyla and 7 archaeal orders. Syntrophobacter, the main Hpr oxidizer in the digester, dominated bacteria with relative abundance changing from 63% to 37% with depth. The predominant methanogens shift from hydrogenotrophic Methanoculleus (similar to 60%) at the upper liquid layer to acetoclastic Methanothrix (similar to 51%) at the lower sediment layer in the bioreactor. These methanogens syntrophically support Syntrophobacter by degrading HPr catabolism by-products (H-2 and acetate). Other bacteria could scavenge anabolic products (carbohydrate and protein) presumably derived from detrital biomass produced by the HPr-degrading community.
文章类型Article
关键词Anaerobic Digestion Propionate Degradation Microbial Community Metabolic Pathway
WOS标题词Science & Technology ; Life Sciences & Biomedicine ; Technology
资助者Ministry of Science and Technology of China(2015BAD21B03) ; Natural Science Foundation for research team of Guangdong Province(2016A030312007) ; Ministry of Science and Technology of China(2015BAD21B03) ; Natural Science Foundation for research team of Guangdong Province(2016A030312007)
DOI10.1016/j.biortech.2017.09.028
研究领域[WOS]Agriculture ; Biotechnology & Applied Microbiology ; Energy & Fuels
关键词[WOS]OVERLOADED ANAEROBIC DIGESTERS ; ACID-DEGRADING BACTERIUM ; SOLE CARBON SOURCE ; 16S RIBOSOMAL-RNA ; GEN.-NOV. ; OXIDIZING BACTERIA ; UASB REACTOR ; WASTE-WATER ; BIOAUGMENTATION ; CULTIVATION
收录类别SCI
语种英语
资助者Ministry of Science and Technology of China(2015BAD21B03) ; Natural Science Foundation for research team of Guangdong Province(2016A030312007) ; Ministry of Science and Technology of China(2015BAD21B03) ; Natural Science Foundation for research team of Guangdong Province(2016A030312007)
WOS类目Agricultural Engineering ; Biotechnology & Applied Microbiology ; Energy & Fuels
WOS记录号WOS:000412443500126
引用统计
文献类型期刊论文
条目标识符http://ir.giec.ac.cn/handle/344007/15770
专题中国科学院广州能源研究所
作者单位1.Chinese Acad Sci, GuangZhou Inst Energy Convers, Lab Biomass Biochem Convers, Guangzhou 510640, Guangdong, Peoples R China
2.Chinese Acad Sci, Key Lab Renewable Energy, Guangzhou 510640, Guangdong, Peoples R China
3.Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Guangdong, Peoples R China
4.Wuhan Kaidi Elect Power Engn Co Ltd, Wuhan 430073, Hubei, Peoples R China
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Li, Ying,Sun, Yongming,Yang, Gaixiu,et al. Vertical distribution of microbial community and metabolic pathway in a methanogenic propionate degradation bioreactor[J]. BIORESOURCE TECHNOLOGY,2017,245:1022-1029.
APA Li, Ying,Sun, Yongming,Yang, Gaixiu,Hu, Keqin,Lv, Pengmei,&Li, Lianhua.(2017).Vertical distribution of microbial community and metabolic pathway in a methanogenic propionate degradation bioreactor.BIORESOURCE TECHNOLOGY,245,1022-1029.
MLA Li, Ying,et al."Vertical distribution of microbial community and metabolic pathway in a methanogenic propionate degradation bioreactor".BIORESOURCE TECHNOLOGY 245(2017):1022-1029.
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