The rate of phenol degradation by activated sludge was studied in a completely mixed continuous-flow reactor with sludge recycle, operated at steady-state conditions at 20°C. Monod kinetics was followed when the influent concentration (Cs°) was kept constant. When using different Cs° levels, the phenol removal rate was found to have an inverse dependence on Cs°. It is suggested that this kinetic anomaly is due to inhibition of the biooxidation by some secondary reaction product(s). A kinetic model based on this concept is able to interpret experimental facts.
Influence of Feed Concentration on the Kinetics of Biodegradation of Phenol in a Continuous Stirred Reactor / P. Beltrame, P.L. Beltrame, P. Carniti. - In: WATER RESEARCH. - ISSN 0043-1354. - 18:403(1984), pp. 407-407.
Influence of Feed Concentration on the Kinetics of Biodegradation of Phenol in a Continuous Stirred Reactor
P. BeltramePrimo
;P. CarnitiUltimo
1984
Abstract
The rate of phenol degradation by activated sludge was studied in a completely mixed continuous-flow reactor with sludge recycle, operated at steady-state conditions at 20°C. Monod kinetics was followed when the influent concentration (Cs°) was kept constant. When using different Cs° levels, the phenol removal rate was found to have an inverse dependence on Cs°. It is suggested that this kinetic anomaly is due to inhibition of the biooxidation by some secondary reaction product(s). A kinetic model based on this concept is able to interpret experimental facts.
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