Aerobic Anaerobic Activation of the aromatic ring O2 CH3, H2O, COOH Electron acceptor end O2 NO-3, SO42 , Fe (III), Mn+4 y CO2 Biomass production higher production Less production Nutritional requirements Less High Intermediate products Catechol, protocatechuate Benzoyl CoA, phloroglucinol, resorcinol Enzymes Mono, di-oxygenases CoA ligase, Benzoyl CoA Final products CO2, H2O CH4, CO2, H2S/N2

Table 2: Comparative table of the aerobic and anaerobic processes in aromatic compound degradation.