Research Article
Hydrogenotrophic Methanogenesis and Autotrophic Growth of Methanosarcina thermophila
Table 1
Methanogenic pathways and free energies of the respective central reactions under standard conditions modified from Liu and Whitman [
1].
| Methanogenic pathway | Reaction of CH4 formation | (kJ/mol) |
| Acetoclastic methanogenesis | CH3COO− + H+ → CH4 + CO2 | −33 | Hydrogen-independent methylotrophic methanogenesis | 4 CH3OH → 3 CH4 + CO2+ 2 H2O | −105 | Hydrogen-dependent methylotrophic methanogenesis | CH3OH + H2 → CH4 + H2O | −113 | Hydrogenotrophic methanogenesis | 4 H2 + CO2 → CH4+ 2 H2O | −135 |
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