Methanogenesis hydrogenotrophic

The hydrogen concentration determines the competition between this so-called halorespiration and methanogenesis. Acetotrophic bacteria such as Desulfitobacterium sp. are associated with incomplete dechlorination to cis-DCE while Dehalococcoides sp., which are hydrogenotrophic, are associated with complete dechlorination to ethene (Yang et al., 2005). 

Dowdle and Oremland, 1998 Ehrlich, 1999, 2002). Several of these pathways are discussed here in the context of the element cycles they influence, including acetogenesis (Section 8.08.3.2.1), hydrogenotrophic methanogenesis (Section 8.08.4.2), NH4 oxidation (Section 8.08.5.3.3), Fe(II) oxidation (Section 8.08.6.5), and sulfur oxidation (Section 8.08.7.9). 

A second possibility yields the same net reaction but is driven by a syntrophic relationship between an organism that oxidizes CH4 to CO2/H2 and an S04 -reducing bacterium that consumes H2, thereby maintaining a thermodynamically favorable environment for the reaction (Hoehler et al., 1994). In this case, anaerobic CH4 oxidation is analogous to hydrogenotrophic methanogenesis in... 

Mefhanogenesis include processes, which with the participation of archaebacteria form CH. Up to 4 processes of methanogenesis are identified. But the main among them are acetoclastic and hydrogenotrophic. Others play a secondary role. 

Hydrogenotrophic methanogenesis is associated with the reduction of COj carbon. In this case the substrate is formic acid HCOOH or CO and the electron donor is H ... 

Hydrogenotrophic methanogenesis are archaea, which, using H as electron donor, are reducing carbon of CO, HCOj or formiat HCOO and forming CH ... 

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