Syntrophic metabolism facilitates Methanosarcina-led methanation in the anaerobic digestion of lipidic slaughterhouse waste
- Authors
- Saha, Shouvik; Kurade, Mayur B.; Ha, Geon-Soo; Lee, Sean S.; Roh, Hyun-Seog; Park, Young-Kwon; Jeon, Byong Hun
- Issue Date
- Sep-2021
- Publisher
- ELSEVIER SCI LTD
- Keywords
- Anaerobic digestion; Slaughterhouse waste; Microbial symbiosis; Acetoclastic methanogenesis; Methane
- Citation
- BIORESOURCE TECHNOLOGY, v.335, pp.1 - 11
- Indexed
- SCIE
SCOPUS
- Journal Title
- BIORESOURCE TECHNOLOGY
- Volume
- 335
- Start Page
- 1
- End Page
- 11
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/141196
- DOI
- 10.1016/j.biortech.2021.125250
- ISSN
- 0960-8524
- Abstract
- Different inoculum to slaughterhouse waste (SHW) ratios (Ino/SHW) influences the digester performance, substrate utilization, and methane yield through microbial shift and their metabolic syntrophy. Acetoclastic Methanosarcina (68-87%) was dominant in the exponential phase, overpowering the initial abundance of Methanosaeta (86% of methanogens) in the SHW digesters. Positive interactions among acetogenic and acetateoxidizing species of Clostridium (11%) with Methanosarcina (84% of methanogens) improved the methanogenic activity (292 mL g-1 VSinitial d-1) and final VS utilization (90%) at the highest Ino/SHW loading. In contrast, significant improvement of methane yield (152% higher than the control) at the lowest Ino/SHW loading was attributed to strong syntrophy among Methanosaeta (24% of methanogens) and its exoelectrogenic partners, Bythopirellula (0.52%) and Mariniphaga (0.08%) and the acetogenic Cloacimonas (0.16%) and Longilinea (0.32%). These syntrophic interactions among the core microbiota induced major metabolic activities, including butanoate, glycine, serine and threonine, methane, propanoate, and pyruvate metabolism, and quorum sensing.
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