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Table 1 Reactions and rate expressions considered in the model simulations. Rate symbols are defined in Table 2

From: Biogeochemical consequences of macrofauna burrow ventilation†

Primary redox reactions-
(CH2O) x (NH3) y (H3PO4) z + (x + 2y)O2 + (y + 2z)HCO3- → (x + y + 2z)CO2 + yNO3- + zHPO42- + (x + 2y + 2z)H2O
(CH2O) x (NH3) y (H3PO4) z + ((4x + 3y)/5)NO3- → ((2x + 4y)/5)N2 + ((x - 3y + 10x)/5)CO2 + ((4x + 3y - 10z)/5)HCO3-+ zHPO42- + ((3x + 6y + 10z)/5)H2O
(CH2O) x (NH3) y (H3PO4) z +(x/2)SO42- + (y - 2z)CO2 + (y - 2z)H2O → (x/2)H2S + (x + y - 2z)HCO3- + yNH4+ + zHPO42-
Secondary redox reactions-
NH4+ + 2O2 + 2HCO3- → NO3- + 2CO2 + 3H2O
H2S + 2O2 + 2HCO3- → SO42- + 2CO2 + 2H2O
Acid-base reactions (equilibrium)-
CO2 + H2O → HCO3- + H+
HCO3 ↔ CO32- + H+
H2S ↔ HS- + H+
Adsorption reations (equilibrium)-
NH4+(aq) ↔ NH4+(ads)
Reaction rates-