caa a22 4500 606212833 CHVBK 20210128101044.0 cr unu---uuuuu 210128e20150801xx s 000 0 eng 10.1007/s10295-015-1632-7 doi (NATIONALLICENCE)springer-10.1007/s10295-015-1632-7 Persistence of Methanosaeta populations in anaerobic digestion during process instability [Elektronische Daten] [Si Chen, Qiang He] Anaerobic digestion is a sustainable technology for the treatment of organic waste and production of biogas. Acetoclastic methanogenesis accounts for the majority of methane production in anaerobic digestion. Therefore, sustaining robust acetoclastic methanogens is important for stable process performance. Due to faster growth kinetics at high acetate concentrations, it has been considered that Methanosarcina would be more prevalent than Methanosaeta in unstable anaerobic digestion processes which frequently experience high acetate levels. Methanogen population dynamics were monitored in multiple continuous anaerobic digesters for 500days. Results from quantitative polymerase chain reaction analysis show that Methanosaeta dominated over Methanosarcina in anaerobic digestion at high acetate levels up to 44mM, suggesting the potential of Methanosaeta as a robust and efficient acetoclastic candidate for resilient anaerobic methane conversion. Further efforts are needed to identify mechanisms contributing to the unexpected competitiveness of these methanogens at high acetate levels observed in this study. Society for Industrial Microbiology and Biotechnology, 2015 Anaerobic digestion nationallicence Acetate nationallicence Methane nationallicence Methanosaeta nationallicence Methanosarcina nationallicence Chen Si Department of Civil and Environmental Engineering, The University of Tennessee, Knoxville, TN, USA aut He Qiang Department of Civil and Environmental Engineering, The University of Tennessee, Knoxville, TN, USA aut Journal of Industrial Microbiology & Biotechnology Springer Berlin Heidelberg 42/8(2015-08-01), 1129-1137 1367-5435 42:8<1129 2015 42 10295 https://doi.org/10.1007/s10295-015-1632-7 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10295-015-1632-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Chen Si Department of Civil and Environmental Engineering, The University of Tennessee, Knoxville, TN, USA aut NATIONALLICENCE 700 1- He Qiang Department of Civil and Environmental Engineering, The University of Tennessee, Knoxville, TN, USA aut NATIONALLICENCE 773 0- Journal of Industrial Microbiology & Biotechnology Springer Berlin Heidelberg 42/8(2015-08-01), 1129-1137 1367-5435 42:8<1129 2015 42 10295