BioMed Research International

Research Article

Application of the Initial Rate Method in Anaerobic Digestion of Kitchen Waste

Table 3

Standard Gibbs free energy change when using methanogens for metabolism of intermediates.


Reaction equation (pH = 7, = 298.15 K)	(kJ/mol)

4CH₃CH₂COO⁻ + 3H₂O 4CH₃COO⁻ + + H⁺ + 3CH₄	−102.0 < 0	>0
2CH₃CH₂CH₂COO⁻ + + H₂O 4CH₃COO⁻ + H⁺ + CH₄	−39.4 < 0	>0
CH₃COOH CO₂ + CH₄	−31.0 < 0	>0
4HCOOH 3CO₂ + 2H₂O + CH₄	−130.1 < 0	>0
4H₂ + + H⁺ 3H₂O + CH₄	−135.6 < 0	>0
2CH₃CH₂OH + CO₂ 2CH₂COOH + CH₄	−116.3 < 0	>0
CH₃OH + H₂ H₂O + CH₄	−112.5 < 0	>0
4CH₃OH CO₂ + 2H₂O + 3CH₄	−104.9 < 0	>0
4CH₃NH₂ + 2H₂O CO₂ + 4NH₃ + 3CH₄	−75.0 < 0	>0
2(CH₃)₂NH + 2H₂O CO₂ + 2NH₃ + 3CH₄	−73.2 < 0	>0
4(CH₃)₃N + 6H₂O 3CO₂ + 4NH₃ + 9CH₄	−74.3 < 0	>0
2(CH₃)₂S + 2H₂O CO₂ + 2H₂S + 3CH₄	−73.8 < 0	>0