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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
Source PublicationBIORESOURCE TECHNOLOGY
Volume245Pages:1022-1029
AbstractThe 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.
SubtypeArticle
KeywordAnaerobic Digestion Propionate Degradation Microbial Community Metabolic Pathway
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine ; Technology
DOI10.1016/j.biortech.2017.09.028
WOS Subject ExtendedAgriculture ; Biotechnology & Applied Microbiology ; Energy & Fuels
WOS KeywordOVERLOADED ANAEROBIC DIGESTERS ; ACID-DEGRADING BACTERIUM ; SOLE CARBON SOURCE ; 16S RIBOSOMAL-RNA ; GEN.-NOV. ; OXIDIZING BACTERIA ; UASB REACTOR ; WASTE-WATER ; BIOAUGMENTATION ; CULTIVATION
Indexed BySCI
Language英语
Funding OrganizationMinistry of Science and Technology of China(2015BAD21B03) ; Natural Science Foundation for research team of Guangdong Province(2016A030312007)
WOS SubjectAgricultural Engineering ; Biotechnology & Applied Microbiology ; Energy & Fuels
WOS IDWOS:000412443500126
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.giec.ac.cn/handle/344007/15770
Collection中国科学院广州能源研究所
Affiliation1.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
First Author AffilicationGuangZhou Institute of Energy Conversion,Chinese Academy of Sciences
Recommended Citation
GB/T 7714
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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