[Biodegradation of di-n-butyl phthalate by Pseudomonas aeruginosa].
A new small capacity-wide extraction method was proposed for detection of its biodegradation in water. Results showed that the halflife (t1/2) of di-n-butyl phthalate (DBP) biodegradation was 3.60 day when the concentration of DBP was 400 mg/L and the biomass concentration was 2 g/L. The biodegradation process conformed to the first-order kinetic model. Moreover, the whole degradation process could be divided into several steps: adsorption, desorption and degradation. Two metabolites of DBP degradation were identified as mono-butyl phthalate and phthalic acid by gas chromatography-mass spectrometry, which confirmed the dioxygenate process during the hydrolysis of DBP.
Wu
Wei-Zhong
WZ
College of Environment Sciences and Engineering, Peking University, Beijing 100871, China. wuweizhong@pku.edu.cn
Zhu
Qing
Q
Feng
Jing
J
Gao
Hang
H
Xie
Chen-Qi
CQ
Wang
Jian-Long
JL
D001673:Biodegradation, Environmental; D003993:Dibutyl Phthalate / Q000032:analysis / Q000378:metabolism*; D052244:Endocrine Disruptors / Q000032:analysis / Q000378:metabolism*; D004785:Environmental Pollutants / Q000378:metabolism*; D006868:Hydrolysis; D011550:Pseudomonas aeruginosa / Q000378:metabolism*
D052244:Endocrine Disruptors; D004785:Environmental Pollutants; D003993:Dibutyl Phthalate