title: Microbiological degradation of phenol using mixed liquors of Pseudomonas putida and activated sludge.
abstract: This work investigated the biodegradation potential of phenol using mixed liquors of Pseudomonas putida (ATCC 31800) and activated sludge. Experiments were made as a function of solution pH (6-10), temperature (30-36 degrees C), nitrogen source (NH4)2SO4 (0.5-0.8 g/l), and carbon source glucose (0.5-0.8 g/l). Response surface methodology by the Box-Behnken model was used to examine the role of four process factors on phenol degradation. It was shown that a second-order polynomial regression model could properly interpret the experimental data with an R2-value of 0.9997 and an F-value of 3605.45, based on which the maximum degradation of phenol was estimated up to 80.1% within the range examined. Interactions between process parameters and each significance effect on phenol degradation were also discussed.
mesh_terms: D001673:Biodegradation, Environmental; D019149:Bioreactors; D004202:Disinfectants / Q000378:metabolism*; D005947:Glucose / Q000378:metabolism; D006863:Hydrogen-Ion Concentration; D019800:Phenol / Q000378:metabolism*; D016958:Pseudomonas putida / Q000502:physiology*; D012722:Sewage / Q000382:microbiology*; D013696:Temperature; D018508:Water Purification / Q000379:methods*
chemical_list: D004202:Disinfectants; D012722:Sewage; D019800:Phenol; D005947:Glucose