Kinetics of Cometabolic Transformation of 4-chlorophenol and Phenol Degradation by Pseudomonas putida Cells in Batch and Biofilm Reactors

The biodegradation kinetics of 4-chlorophenol (4-CP) and phenol microbial growth Pseudomonas putida (P. putida) cells were estimated in batch biofilm reactors. kinetic parameters on determined using the Haldane formula. maximum specific rate P. phenol, half-saturation constant self-inhibition 0.512 h−1, 78.38 mg/L 228.5 mg/L, respectively. yield (YP) was 0.618 mg phenol/mg cell. experimental results for transformation 4-CP by resting fitted with to evaluate utilization 4-CP, which 0.246 1.048 53.40 negative rates obtained a equation investigate true capacity first-order endogenous decay coefficient, 4.34 4-CP/mg cell 5.99 × 10−3 competitive inhibition coefficients degradation 6.75 9.27 respectively; therefore, had higher than converse. predicted model examining cometabolic showed good agreement observations. removal efficiencies 94.56–98.45% 96.09–98.85%, respectively, steady-state performance.