. 2015 Jul 10;9(12):2630–2641. doi: 10.1038/ismej.2015.69

Table 2. Catabolic reactions considered in the inorganic nitrogen oxidation–reduction microbial ecosystem.

Nitrogen oxidation and reduction
X_i	Catabolism reaction	N_e,mol_e− mol_eD⁻¹	ΔG⁰¹a, kJ mol_eD⁻¹	ΔG⁰¹/e⁻, kJ mol_e−⁻¹
1	NH₄⁺ + 1.5O₂ → NO₂⁻ + 2H⁺ + H₂O	6	−269.90	−44.98
2	NO₂⁻ + ½ O₂ → NO₃⁻	2	−76.50	−38.25
3	NH₄⁺ + 2O₂ → NO₃⁻ + 2H⁺ + H₂O	8	−346.40	−43.30
4	C₂H₃O₂⁻ + 8/5NO₃⁻ + 13/5H⁺ → 4/5N₂ + 2CO₂ + 14/5H₂O	8	−805.60	−100.70
5	C₂H₃O₂⁻ + 8/3 NO₂⁻ + 11/3 H⁺ → 4/3N₂ + 2CO₂ + 10/3H₂O	8	−977.50	−122.19
6	C₂H₃O₂⁻ + 2NO₃⁻ + 3H⁺ → N₂O + 2CO₂ + 3H₂O	8	−689.40	−86.18
7	C₂H₃O₂⁻ + 4NO₂⁻ + 5H⁺ → 2N₂O + 2CO₂ + 4H₂O	8	−831.00	−103.88
8	C₂H₃O₂⁻ + 4N₂O + H⁺ → 4N₂ + 2CO₂ + 2H₂O	8	−1270.50	−158.81
9	C₂H₃O₂⁻ + 4NO₃⁻ + H⁺ → 4NO₂⁻ + 2CO₂ + 2H₂O	8	−547.70	−68.46
10	C₂H₃O₂⁻ + NO₃⁻ + 3H⁺ → NH₄⁺ + 2CO₂ + H₂O	8	−507.30	−63.41
11	C₂H₃O₂⁻ + 4/3NO₂⁻ + 11/3H⁺ → 4/3NH₄⁺ + 2CO₂ + 2/3H₂O	8	−493.80	−61.73
12	NH₄⁺ + NO₂⁻ → N₂ + 2H₂O	4	−362.80	−90.70

Considering pH 7 and 298.15 K. Liquid concentrations 1 m and 1 bar for gas components (N₂, N₂O and CO₂).