Estimation of biodegradation parameters of phenolic compounds on activated sludge by respirometry.
The bio-oxidation of phenol, catechol, resorcinol, m-cresol and 5-methylresorcinol on activated sludge was investigated by oxygen uptake measurements. In addition, the degradation of acetate with the same microbial population was studied. The substrate-dependent oxygen uptake data were analysed on the basis of the Michaelis-Menten kinetics. The extant kinetic parameters, the maximum rates of oxygen consumption and half-saturation constants for the processes with different substrates were determined. The simple respirometric approach also made it possible to determine the short-term oxygen demands of the substrates which formed 23-38% of the theoretical oxygen demand of the studied compounds.
Orupõld
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K
Centre for Strategic Competence in Environmental Technology, University of Tartu, Estonia. kajao@chem.ut.ee
Masirin
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A
Tenno
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D018407:Bacterial Physiological Phenomena; D001673:Biodegradation, Environmental; D005544:Forecasting; D007700:Kinetics; D008962:Models, Theoretical; D010084:Oxidation-Reduction; D010100:Oxygen / Q000378:metabolism; D010636:Phenols / Q000378:metabolism*; D012722:Sewage / Q000737:chemistry*
D010636:Phenols; D012722:Sewage; D010100:Oxygen