[Anaerobic degradation kinetics of 2,4-dinitrophenol].
With glucose as co-substrate, anaerobic degradation kinetics of 2,4-dinitrophenol (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 x g), 196.23 mg/L and 165.91 mg/L respectively. The experimental data verification for the model equation is satisfactory.
Tang
Gai-Feng
GF
Key Laboratory of Marine Environmental Science and Ecology, Ministry of Education, Ocean University of China, Qingdao 266003, China.
She
Zong-Lian
ZL
Wu
Mei-Ling
ML
Jin
Chun-Ji
CJ
D019297:2,4-Dinitrophenol / Q000378:metabolism*; D001421:Bacteria, Anaerobic / Q000378:metabolism*; D001673:Biodegradation, Environmental; D019149:Bioreactors / Q000382:microbiology*; D007700:Kinetics; D008954:Models, Biological; D014865:Waste Disposal, Fluid / Q000379:methods
D019297:2,4-Dinitrophenol