Iron bacteria | Acidithiobacillus ferrooxidans | Fe2+ (ferrous iron) → Fe3+ (ferric iron) + e-[11] | O 2 (oxygen) → H 2O (water)[11] |
Nitrosifying bacteria | Nitrosomonas | NH3 (ammonia) → NO− 2 (nitrite) + e-[12] | O 2 (oxygen) → H 2O (water)[12] |
Nitrifying bacteria | Nitrobacter | NO− 2 (nitrite) → NO− 3 (nitrate) + e-[13] | O 2 (oxygen) → H 2O (water)[13] |
Chemotrophic purple sulfur bacteria | Halothiobacillaceae | S2− (sulfide) → S0 (sulfur) + e- | O 2 (oxygen) → H 2O (water) |
Sulfur-oxidizing bacteria | Chemotrophic Rhodobacteraceae and Thiotrichaceae | S0 (sulfur) → SO2− 4 (sulfate) + e- | O 2 (oxygen) → H 2O (water) |
Aerobic hydrogen bacteria | Cupriavidus metallidurans | H2 (hydrogen) → H2O (water) + e-[14] | O 2 (oxygen) → H 2O (water)[14] |
Anammox bacteria | Planctomycetes | NH3 (ammonia) → N 2 (nitrogen) + e-[15] | NO− 2 (nitrite)[15] |
Thiobacillus denitrificans | Thiobacillus denitrificans | S0 (sulfur) → SO2− 4 (sulfate) + e-[16] | NO− 3 (nitrate)[16] |
Sulfate-reducing bacteria: Hydrogen bacteria | | H2 (hydrogen) → H2O (water) + e-[14] | Sulfate (SO2− 4)[14] |
Sulfate-reducing bacteria: Phosphite bacteria | Desulfotignum phosphitoxidans | PO3− 3 (phosphite) → PO3− 4 (phosphate) + e- | Sulfate (SO2− 4) |
Methanogens | Archaea | H2 (hydrogen) → H2O (water) + e- | CO2 (carbon dioxide) |
Carboxydotrophic bacteria | Carboxydothermus hydrogenoformans | carbon monoxide (CO) → carbon dioxide (CO2) + e- | H 2O (water) → H 2 (hydrogen) |