Biodegradation Kinetic Studies of Phenol and p-Cresol in a Batch and Continuous Stirred-Tank Bioreactor with Pseudomonas putida ATCC 17484 Cells

The biodegradation of phenol, p-cresol, and phenol plus p-cresol mixtures was evaluated using Pseudomonas putida ATCC 17484 in aerobic batch reactors. Shake-flask experiments were performed separately growth medium with initial nominal concentrations (50–600 mg L−1) as well L−1). complete degradation achieved within 48 h 48–56 h, respectively, for all p-cresol. maximum cell rate (μmax,P = 0.45 h−1) much faster than that (μmax,C 0.185−1 h). larger Ki value (310.5 revealed the P. cells had a higher resistance to inhibition compared (243.56 A mixture resulted removal 52–56 50–500 L−1. time needed remove completely In continuous-flow immobilized reactor, efficiency 97.6 89.1%, at stable condition.