Biochemical Oxidation

• Proteins, amino acids & carbohydrates are plentiful energy source for bacteria

• Aerobic or anaerobic process

• Bacteria “transfer” oxygen from compounds to a hydrogen acceptor

• 2NO3- + 12H+ = N2 + 6H2O
  
  CO2 + 8H+ = CH4 + 2H2O
  SO4 + 10H+ = H2S + 4H2O (odorous)

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