Screening and characterization of 2,4-dichlorophenol-degrading strains

An efficient 2,4-dichlorophenol-degrading W-1 strain was screened from the sludge of the wastewater of treatment and was identified as Pseudomonas sp..The suitable conditions for degradation are pH 6.0,35 ℃ and 240 r·min-1,in which the highest degradation rate might reach 88.5% after 48 h when medium contained 50 mg·L-1 2,4-dichlorophenol.50 mg·L-1 carbon source(glucose,starch,maltose,etc.)or 50 mg·L-1 nitrogen source(peptone,yeast extract,urea,etc.)couldn′t increase degradation,but 0.32 mmol·L-1 metal ions(Co2+,Ba2+,Al3+,etc.) had different inhibition on the degradation of 2,4-dichlorophenol by W-1 strain.