Monitoring and modeling 4-chlorophenol biodegradation kinetics by phenol-acclimated activated sludge by using open respirometry.
作者： Cintia C. Lobo , Nora C. Bertola , Edgardo M. Contreras , Noemí E. Zaritzky
DOI: 10.1007/S11356-017-9735-5
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摘要: The aim of this study was to analyze the mechanisms, stoichiometry, and stability 4-chlorophenol (4CP) biodegradation kinetics by phenol-acclimated activated sludge using open respirometry. While removal 4CP higher than 98%, chemical oxygen demand (COD) ranged between 69 79% due accumulation an intermediate metabolite. value obtained from respirometric profiles for stoichiometric ratio O2 (YO2/4CP) 1.95 ± 0.04 mol consumed per mol removed. This YO2/4CP reflected action oxygenases responsible first steps aerobic oxidation 4CP. degradation activity decreased noticeably when successive pulses were added respirometer. A mathematical model developed represent fitted adequately predicted consumption rate, total phenols, soluble COD concentrations as a function time. results presented could help predict dynamic chlorophenols in biological wastewater treatment system.
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