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

Table 2

Standard Gibbs free energy change when using hydrogen-producing acetogens for metabolism of organic acids and alcohols.

Reaction equation (pH = 7, = 298.15 K)	(kJ/mol)
CH3CH2OH + H2O CH3COO^− + 2H2 + 2H^+	+9.6 > 0	<0
CH3CH2COO^− + 3H2O CH3COO^− + + H^+ + 3H2	+76.1 > 0	<0
CH3CH2COO^− + 2 CH3COO^− + H^+ + 3HCOO^−	+72.4 > 0	<0
CH3CH2CH2COO^− + 2H2O 2CH3COO^− + H + 2H2	+48.1 > 0	<0
CH3CH2CH2COO^− + 2CH3COO^− + H^+ + 2HCOO^−	+45.5 > 0	<0
CH3CH2CH2CH2COO^− + 2H2O CH3COO^− + CH3CH2COO^− + H^+ + 2H2	+25.1 > 0	<0
CH3CHOHCOO^− + 2H2O CH3COO^− + + H^+ + 2H2	−4.2 < 0	>0