Journal ArticleDOI
Isolation and characterization of a new thermophilic Methanosarcina strain (strain MP)
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TLDR
A thermophilic Methanosarcina strain was isolated from a digester fed with water hyacinths and inoculated with ground termites from the Congo and grew on acetate, methanol and methylamines in the absence of growth factors, but could not use H2-CO2 or formate.Abstract:
A thermophilic Methanosarcina strain was isolated from a digester fed with water hyacinths and inoculated with ground termites from the Congo. Optimal growth temperature was 55 degrees C. Methane production was at its optimum between pH 6.5 and 7.0. The bacterium grew on acetate, methanol and methylamines in the absence of growth factors, but could not use H2-CO2 or formate. H2-CO2 inhibited acetate utilisation. Yeast extract and vitamins stimulated growth.read more
Citations
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Book ChapterDOI
Diversity and Taxonomy of Methanogens
TL;DR: This work has shown that methane production is a ubiquitous, defining characteristic of methanogens, a group of microbes that is phylogenetically distinct from eukaryotes and true bacteria.
Journal ArticleDOI
Thermotoga lettingae sp. nov., a novel thermophilic, methanol-degrading bacterium isolated from a thermophilic anaerobic reactor.
TL;DR: Strain TMOT was able to degrade methanol to CO2 and H2 in syntrophic culture with Methanothermobacter thermautotrophicus AH or Thermodesulfovibrio yellowstonii and is related to Thermotoga subterranea andThermotoga elfii.
Journal ArticleDOI
Limitations of thermophilic anaerobic wastewater treatment and the consequences for process design.
TL;DR: In this article, the process stability of thermophilic anaerobic wastewater treatment systems is investigated and a relatively low sensitivity to temperature changes if high-rate reactors with immobilized biomass are used.
Journal ArticleDOI
Temperature susceptibility of thermophilic methanogenic sludge: Implications for reactor start-up and operation
TL;DR: In this paper, the effect of temperature on the conversion rates of VFA by thermophilic methanogenic sludge grown under different conditions was studied, and the optimum temperatures for acetate degradation of sludges cultivated in serum bottles at 46, 55 and 64°C for 6-8 weeks were found to be strongly dependent on the cultivation temperature.
References
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Journal ArticleDOI
Studies on an acetate-fermenting strain of Methanosarcina.
TL;DR: An acetate-fermenting strain of Methanosarcina was isolated from an acetate enrichment culture inoculated with anaerobic sludge from a waste treatment digestor and labeling studies indicated that acetate was converted to methane and CO2 as predicted by previous studies on mixed cultures.
Journal ArticleDOI
Anaerobic Degradation of Lactate by Syntrophic Associations of Methanosarcina barkeri and Desulfovibrio Species and Effect of H(2) on Acetate Degradation.
TL;DR: H(2) produced by the Desulfovibrio species during growth with lactate inhibited acetate degradation by M. barkeri, and the ultimate rate of acetate utilization for methanogenesis was greater for those cocultures receiving the highest levels of lactate.
Journal ArticleDOI
Methanothermus fervidus, sp. nov., a novel extremely thermophilic methanogen isolated from an Icelandic hot spring
Karl O. Stetter,Michael Thomm,Josef Winter,Gertrud Wildgruber,Harald Huber,Wolfram Zillig,Davorin Jané-Covic,Helmut König,Peter Palm,S. Wunderl +9 more
TL;DR: A rod-shaped extremely thermophilic methanogen is described, growing between 65 and 97 °C with an optimal temperature around 83 °C and a doubling time of 170 min, indicating that the isolate belongs to a new family, the Methanothermaceae, within the order Methanobacteriales.
Journal ArticleDOI
Isolation and Characterization of a Methylotrophic Marine Methanogen, Methanococcoides methylutens gen. nov., sp. nov.
Kevin R. Sowers,James G. Ferry +1 more
TL;DR: A new genus of marine methanogenic bacteria is described that utilizes trimethylamine, diethylamine (TMA-10), monomethylamines, and methanol as substrates for growth and meetinghanogenesis.
Journal ArticleDOI
Isolation and characterization of Methanolobus tindarius, sp. nov., a coccoid methanogen growing only on methanol and methylamines
Helmut König,Karl O. Stetter +1 more
TL;DR: A marine, mesophilic, coccoid, lobal, monotrichous flagellated methanogen, growing on methanol and methylamines, but not on H2/CO2, is described and has been named Methanolobus tindarius.
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