[Anaerobic degradation kinetics of 2,4-dinitrophenol].

With glucose as co-substrate,anaerobic degradation kinetics of 2,4dinitrophenol(2,4-DNP) were investigated in batch culture.The results show that 2,4-DNP and glucose can be degraded by the bacteria simultaneously.Although the effect of COD on 2,4-DNP degradation was minimal,addition of 2,4-DNP effected COD degradation obviously.The rate of 2,4-DNP degradation increased with increasing initial 2,4-DNP concentrations up to 225(mg/L).Further increase in initial 2,4-DNP concentrations caused decrease in the rate of degradation because of substrate inhibition.Uncompetitive inhibition equation is proposed to describe the degradation of 2,4-DNP.With non-linear regression technology,the kinetic model parameter q-(max),K-s and K-i are found to be 3.24(mg/(h·g),) 196.23(mg/L) and 165.91(mg/L) respectively.The experimental data verification for the model equation is satisfactory.