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. 2001 Oct;67(10):4471–4478. doi: 10.1128/AEM.67.10.4471-4478.2001

TABLE 1.

Thermodynamic comparisons of the biodegradation of toluene with alternative electron acceptorsa

Reaction ΔG°′ (kJ/mol)
C7H8 + 36 Fe3+ + 21 H2O → 36 Fe2+ + 43 H+ + 7 HCO3− −3,629.6
C7H8 + 7.2 NO3− + 0.2 H+ → 3.6 N2 + 0.6 H2O + 7 HCO3− −3,554.8
C7H8 + 18 MnO2 + 18 H2CO3 → 7 CO2 + 18 MnCO3 + 22 H2O −3,358.8b
C7H8 + 36 FeO(OH) + 36 H+ → 7 CO2 + 36 Fe(OH)+ + 22 H2O −1,443.6b
C7H8 + 18 AQDS + 21 H2O → 18 AH2QDS + 7 H+ + 7 HCO3− −319.7
C7H8 + 4.5 SO42− + 3 H2O → 4.5 HS− + 2.5 H+ + 7 HCO3− −205.2
C7H8 + 7.5 H2O → 4.5 CH4 + 2.5 H+ + 2.5 HCO3− −130.7
a

Values were calculated with data from references 20, 34, and 38. 

b

Solid-phase free energies were used.