Characteristics and Kinetics of Phenol Degradation by Candida maltosa

An effective phenol-degrading strain was isolated from activated sludge,and was identified as Candida maltosa based on morphological,biochemical and physiological experiments.The strain could utilize phenol as sole carbon and energy source.The optimum degradation conditions were temperature of 30 ℃,initial pH of 7.0 and shaking speed of 200 r/min.The degradation experiment indicated that the strain could completely degrade 1 800 mg/L phenol within 69 h.The higher the phenol concentration was,the stronger the substrate inhibition was.Growth kinetics of the strain fitted the Haldane equation,which could be used to simulate phenol degradation at different initial concentrations.