Results 1 to 10 of about 41,105 (250)

Microbial methanogenesis in the sulfate-reducing zone of sediments in the Eckernförde Bay, SW Baltic Sea [PDF]

Biogeosciences, 2018
Benthic microbial methanogenesis is a known source of methane in marine systems. In most sediments, the majority of methanogenesis is located below the sulfate-reducing zone, as sulfate reducers outcompete methanogens for the major substrates hydrogen
J. Maltby, J. Maltby, L. Steinle, L. Steinle, C. R. Löscher, C. R. Löscher, H. W. Bange, M. A. Fischer, M. Schmidt, T. Treude, T. Treude   +10 more
doaj   +6 more sources

Electron Bifurcation and Confurcation in Methanogenesis and Reverse Methanogenesis [PDF]

Frontiers in Microbiology, 2018
Reduction of the disulfide of coenzyme M and coenzyme B (CoMS–SCoB) by heterodisulfide reductases (HdrED and HdrABC) is the final step in all methanogenic pathways. Flavin-based electron bifurcation (FBEB) by soluble HdrABC homologs play additional roles
Zhen Yan, James G. Ferry
doaj   +3 more sources

Active methylotrophic methanogenesis by a microbial consortium enriched from a terrestrial meteorite impact crater [PDF]

mBio
Microbial methane generation (methanogenesis) is an important metabolic process in the terrestrial deep biosphere and is an analog to early Earth as it is proposed to be one of the most ancient metabolisms on Earth.
Femke van Dam, George Westmeijer, Maryam Rezaei Somee, Marcelo Ketzer, Riikka Kietäväinen, Shuhei Ono, Stefan Bertilsson, Jennifer C. McIntosh, Mark Dopson, Henrik Drake   +9 more
doaj   +2 more sources

Genus-specific remodeling of carbon and energy metabolism facilitates acetoclastic methanogenesis in Methanosarcina spp. and Methanothrix spp. [PDF]

Journal of Bacteriology
Methanogenic archaea (methanogens) are microorganisms that obligately produce methane as a byproduct of their energy metabolism. While most methanogens grow on CO2+H2, isolates of the genera Methanosarcina and Methanothrix can use acetate as the sole ...
Blake E. Downing, Dinesh Gupta, Katie E. Shalvarjian, Dipti D. Nayak   +3 more
doaj   +2 more sources

Coexistence of methanogenesis and sulfate reduction in a sulfate-adapted enrichment culture from an oil reservoir [PDF]

Applied and Environmental Microbiology
Oil reservoirs are complex ecosystems where microorganisms play a vital role in hydrocarbon degradation, mostly with methanogenesis as the terminal electron-accepting process. Especially in offshore oil reservoirs, sulfate-containing seawater is injected
Sebastian Beilig, Lisa Voskuhl, Itır Geydirici, Lucie K. Tintrop, Torsten C. Schmidt, Rainer U. Meckenstock   +5 more
doaj   +2 more sources

Acetoclastic versus hydrogenotrophic methanogenesis: defining how pH and alkalinity shape acetate metabolism in a haloalkaliphilic methanogenic community for biomethane production [PDF]

Applied Microbiology and Biotechnology
In methanogenic communities, two main pathways drive methanogenesis: acetoclastic methanogenesis, which converts acetate into CH4 and CO2, and hydrogenotrophic methanogenesis, which reduces CO2 with H2 to CH4.
Beatriz C. Diniz, Ben Abbas, Dimitry Y. Sorokin, Mark C. M. van Loosdrecht, Philipp Zantout-Wilfert   +4 more
doaj   +2 more sources

Magnetite drives microbial community restructuring and stimulates aceticlastic methanogenesis of type II Methanosarcina in mangrove sediments [PDF]

Microbiome
Background Mangrove wetlands are critical hotspots of methane emissions, yet the role of naturally occurring minerals in shaping their microbial communities and methanogenic processes is poorly understood.
Jinjie Zhou, Cui-Jing Zhang, Dayu Zou, Chengxiang Gu, Meng Li   +4 more
doaj   +2 more sources

Hydrogenotrophic Methanogenesis Under Alkaline Conditions [PDF]

Frontiers in Microbiology, 2020
A cement-based geological disposal facility (GDF) is one potential option for the disposal of intermediate level radioactive wastes. The presence of both organic and metallic materials within a GDF provides the opportunity for both acetoclastic and ...
Richard M. Wormald, Simon P. Rout, William Mayes, Helena Gomes, Helena Gomes, Paul N. Humphreys   +5 more
doaj   +4 more sources

Thermodynamic method for analyzing and optimizing pretreatment/anaerobic digestion systems [PDF]

Biofuel Research Journal, 2023
This paper builds a quantitative thermodynamic model for the microbial hydrolysis process (MHP, which uses Caldicellulosiruptor bescii at 75°C for pre-digestion) for producing biogas from a 5-10% aqueous suspension of dairy manure (naturally buffered ...
Lee D. Hansen
doaj   +1 more source

Methanogenesis [PDF]

Current Biology, 2018
Methanogenesis is an anaerobic respiration that generates methane as the final product of metabolism. In aerobic respiration, organic matter such as glucose is oxidized to CO2, and O2 is reduced to H2O. In contrast, during hydrogenotrophic methanogenesis, H2 is oxidized to H+, and CO2 is reduced to CH4.
Zhe, Lyu, Nana, Shao, Taiwo, Akinyemi, William B, Whitman   +3 more
openaire   +2 more sources