Kinetics of aerobic biodegradation of benzene and toluene in sandy aquifer material.
Monod's equation adequately described aerobic biodegradation rates of benzene and toluene by the microbial population of a sandy aquifer when these compounds were initially present at concentrations lower than 100 mg/l each. Concentrations higher than 100 mg/l were inhibitory, and no benzene or toluene degradation was observed when these compounds were initially present at 250 mg/l each. The Monod coefficients were calculated as k = 8.3 g-benzene/g-cells/day and Ks = 12.2 mg/l for benzene, and k = 9.9 g-toluene/g-cells/day and Ks = 17.4 mg/l for toluene. Specific first-order coefficients would be 0.68 l/mg.day for benzene and 0.57 l.mg.day for toluene.
Department of Civil and Environmental Engineering, University of Michigan, Ann Arbor 48109-2125.
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D000332:Aerobiosis; D001554:Benzene / Q000378:metabolism*; D001673:Biodegradation, Environmental; D007700:Kinetics; D014050:Toluene / Q000378:metabolism*; D014871:Water Microbiology; D014874:Water Pollutants, Chemical / Q000378:metabolism*
D014874:Water Pollutants, Chemical; D014050:Toluene; D001554:Benzene