Topic
Methanogen
About: Methanogen is a research topic. Over the lifetime, 1146 publications have been published within this topic receiving 48254 citations.
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TL;DR: Bio-electrochemical properties of electromethanogenic reaction by Methanothermobacter thermautotrophicus strain AH, a thermophilic methanogen, are characterized and it is shown that the meethanogen can electromETHanogenically produce methane without exogenously-supplied hydrogen.
32 citations
TL;DR: The methanogenic degradation of cellulose-containing sewage was markedly promoted via the fungi-methanogens syntrophic association and enhanced methane production with decreased biomass yield was attributed to an association between fungi and methanogens.
32 citations
TL;DR: In anaerobic digestion of chicken manure at total ammonium nitrogen concentrations over 6000 mg L-1, Se supplementation was critical but not sufficient alone for long-term stable CH4 production, while addition of a mix consisting of Co, Mo, Ni, Se and W resulted in a more stable digestion performance.
32 citations
TL;DR: Real-time PCR and cloning analysis revealed that the number of Methanosarcina thermophila is larger than that of Methanoculleus thermophilus, which is a hydrogenotrophic methanogen, in terms of the numbers of copies of 16S ribosomal DNA (rDNA).
31 citations
TL;DR: Evaluating the role of methanogenesis with arsenic-bearing ferric iron waste from an electrocoagulation drinking water treatment system revealed that arsenic volatilization correlated with methanogenic activity, indicating that unintended contamination may result from disposal in anaerobic environments.
Abstract: The removal of arsenic from drinking water sources produces arsenic-bearing wastes, which are disposed of in a variety of ways. Several disposal options involve anaerobic environments, including mixing arsenic waste with cow dung, landfills, anaerobic digesters, and pond sediments. Though poorly understood, the production of gaseous arsenic species in these environments can be a primary goal (cow dung mixing) or an unintended consequence (anaerobic digesters). Once formed, these gaseous arsenic species are readily diluted in the atmosphere. Arsenic volatilization can be mediated by the enzyme arsenite S-adenosylmethionine methyltransferase (ArsM) or through the enzymes involved in methanogenesis. In this study, methanogenic mesocosms with arsenic-bearing ferric iron waste from an electrocoagulation drinking water treatment system were used to evaluate the role of methanogenesis in arsenic volatilization using methanogen inhibitors. Arsenic volatilization was highest in methanogenic mesocosms, but represen...
31 citations