Biodegradation kinetics of picric acid by Rhodococcus sp.NJUST16 in batch reactors.
Biological degradation of 2,4,6-trinitrophenol (TNP) by Rhodococcus sp.NJUST16 in mineral salt medium was investigated in shake-flask experiments at pH of 7.0 and 30 degrees C, over a wide range of initial TNP concentration (20-800 mgl(-1)). The TNP was observed to be the inhibitory compound. For the studied concentration range, Haldane's model could be fitted to the growth kinetics data well with the kinetic constants mu(max)=0.2362 h(-1), K(s)=9.9131 mgl(-1) and K(i)=362.7411 mgl(-1). Further, the variation of observed yield coefficient Y with initial TNP concentration and the decay coefficient were investigated. It is our view that the above information would be useful for modeling and designing the units treating TNP-containing wastewaters.
Shen
Jinyou
J
School of Chemical Engineering, Nanjing University of Science and Technology, 200 Xiaolingwei Street, Nanjing, Jiangsu Province, China.
He
Rui
R
Wang
Lianjun
L
Zhang
Jianfa
J
Zuo
Yi
Y
Li
Yanchun
Y
Sun
Xiuyun
X
Li
Jiansheng
J
Han
Weiqing
W
D001673:Biodegradation, Environmental; D019149:Bioreactors; D007700:Kinetics; D010851:Picrates / Q000378:metabolism*; D012240:Rhodococcus / Q000378:metabolism*; D014874:Water Pollutants, Chemical / Q000378:metabolism; D018508:Water Purification / Q000379:methods
D010851:Picrates; D014874:Water Pollutants, Chemical; C005858:picric acid