Effect of one step temperature increment from mesophilic to thermophilic anaerobic digestion on the linked pattern between bacterial and methanogenic communities
Jazyk angličtina Země Velká Británie, Anglie Médium print-electronic
Typ dokumentu časopisecké články
PubMed
31430671
DOI
10.1016/j.biortech.2019.121968
PII: S0960-8524(19)31198-8
Knihovny.cz E-zdroje
- Klíčová slova
- (13)C isotope fractionation, Anaerobic digestion, Firmicutes, Methanomicrobiaceae,
- MeSH
- anaerobióza MeSH
- Bacteria MeSH
- bioreaktory * MeSH
- Euryarchaeota * MeSH
- methan MeSH
- teplota MeSH
- Publikační typ
- časopisecké články MeSH
- Názvy látek
- methan MeSH
Process fluctuation caused by temperature modification of anaerobic digestion is routinely monitored via operational parameters, such as pH and gas production, but these parameters are lagging on microbial community performance. In this study, 13C isotope fractionation in CH4 and CO2 of biogas together with microbial community dynamics were applied to evaluate process stability in response to temperature increment. Results showed that the weakening correlated links between Firmicutes affiliated families and Methanomicrobiaceae were found regarding temperature increase. In contrast, Methanosarcinaceae and Methanobacteriaceae strengthened their links with multiple bacterial groups. This suggests that the 13C isotope fractionation in CH4 can predict the collapse of certain microbial interconnections and process instability, the new reinforced microbial links directly reflect the microbial community redundancy for maintaining function of syntrophic populations.
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