Degradation Kinetics of Trichloroethylene by Cometabolism of Methanotrophscolony

Aerobicdegradation of trichloroethylene(TCE) is an economical and environment-friendly biological recovery technique.Methylocystis strains were enriched from aged refuse and the degradation of TCE by cometabolism by its resting cells were studied.The degradation rate reached 79% when the initial concentration of TCE was 45.5 mg / L and cells concentration C x was 1.728 g / L,indicating that the Methylocystis strains had higher tolerance and affinity potential to TCE.The maximum specific degradation rate(q s,max = 1.51 × 10-4min-1) and half-saturation constants(KS = 2.58 mg / L,R2= 0.961) were calculated according to kinetic equation of TCE degradation which fitted to Monad model well.