Bacterial anaerobic corrosion

Bacterial anaerobic corrosion is a bacterially-induced oxidation of metals. In a humid environment and anoxic conditions the corrosion of metals occurs as a result of a redox reaction that generates molecular hydrogen from hydrogen ions, requiring bacteria, unlike anaerobic corrosion that occurs spontaneously. Fe + 2 H+ → Fe2+ + H2Fe + 2 H2O → Fe(OH)2 + H2 Usually, a thin film of molecular hydrogen forms on the metal. Sulfate-reducing bacteria, oxidize the molecular hydrogen to produce hydrogen sulfide ions (HS−) and water: 4 H2 + SO42− → HS− + 3 H2O + OH− The net equation comes to:

Bacterial anaerobic corrosion

Bacterial anaerobic corrosion is a bacterially-induced oxidation of metals. In a humid environment and anoxic conditions the corrosion of metals occurs as a result of a redox reaction that generates molecular hydrogen from hydrogen ions, requiring bacteria, unlike anaerobic corrosion that occurs spontaneously. Fe + 2 H+ → Fe2+ + H2Fe + 2 H2O → Fe(OH)2 + H2 Usually, a thin film of molecular hydrogen forms on the metal. Sulfate-reducing bacteria, oxidize the molecular hydrogen to produce hydrogen sulfide ions (HS−) and water: 4 H2 + SO42− → HS− + 3 H2O + OH− The net equation comes to: