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Bioremediation of environmental endocrine disruptor di-n-butyl phthalate ester by Rhodococcus ruber
Article
Li, J, Chen, JA, Zhao, Q
et al
. (2006). Bioremediation of environmental endocrine disruptor di-n-butyl phthalate ester by Rhodococcus ruber .
CHEMOSPHERE,
65(9), 1627-1633. 10.1016/j.chemosphere.2006.03.005
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Li, J, Chen, JA, Zhao, Q
et al
. (2006). Bioremediation of environmental endocrine disruptor di-n-butyl phthalate ester by Rhodococcus ruber .
CHEMOSPHERE,
65(9), 1627-1633. 10.1016/j.chemosphere.2006.03.005
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cited authors
Li, J; Chen, JA; Zhao, Q; Li, X; Shu, W
authors
Chen, Ji'An
abstract
In this study DBP-degradation strain CQ0301 was isolated from rubbish landfill soil. According to the biophysical, biochemical characteristics and analysis of 16S rRNA, the strain was identified as Rhodococcus ruber. Three new protein bands could be fractioned after DBP-inducing, which were suspected to participate the process of DBP-degrading. Catechol was suspected to be an intermediate product of DBP and cleaving the benzene ring was catalyzed by catechol 1,2-dioxygenase, because a highly activity of catechol 1,2-dioxygenase could be detected after DBP-inducing. The results of this study also showed the optimal pH value, optimal temperature which influenced the degradation rate in soil: pH 7.0-8.0, 30-35 °C. Kinetics of degradation reaction had been performed at different initial concentration and different time. Analyzed with SPSS10.0 software, the DBP degradation can be described as the same exponential model when the initial DBP concentration was lower than 50 mg/kg. The kinetics equation was ln C = -0.1332t + A, with the degradation half-life of DBP in soil (5.20 d). Inoculating CQ0301 could relieve DBP content in plant. We also found that adding nutrient materials into soil was useful for decreasing the DBP content in plant. In summary, we isolated a bacterium capable of degrading DBP and decreasing DBP content in plant. We also explored the mechanism of biodegradation and characterized the environmental factors influencing the degradation process in contaminated soil. Based on this work, we hope that these findings can provide some information for applying of bioremediation of DBP contaminated soil. © 2006 Elsevier Ltd. All rights reserved.
publication date
November 1, 2006
published in
CHEMOSPHERE
Journal
Identifiers
Digital Object Identifier (DOI)
https://doi.org/10.1016/j.chemosphere.2006.03.005
Additional Document Info
start page
1627
end page
1633
volume
65
issue
9