IR@PKUHSC  > 北京大学基础医学院
学科主题基础医学
Biodegradation of Trinitrotoluene by a Bacterial Consortium Containing Klebsiella sp and Burkholderia sp.
Guo Xiaojie1; Xin Baoping1; Ma Xingtai1; Xia Yunting1; Chen Shi1; Yang Yepeng2
关键词trinitrotoluene bacterial consortium biocatalytic degradation oxidative ring cleavage
刊名CHINESE JOURNAL OF CATALYSIS
2009-12-01
30期:12页:1261-1268
收录类别SCI
文章类型Article
WOS标题词Science & Technology
类目[WOS]Chemistry, Applied ; Chemistry, Physical ; Engineering, Chemical
研究领域[WOS]Chemistry ; Engineering
关键词[WOS]2,4,6-TRINITROTOLUENE TNT ; PHOTOCATALYTIC DEGRADATION ; TOLUENE DIOXYGENASE ; CONTAINING MEDIA ; TRANSFORMATION ; CULTURE
英文摘要

The biodegradation characteristic and mechanism of trinitrotoluene (TNT) by a bacterial consortium S consisted of Klebsiella sp. S1 and Burkholderia sp. S2 were investigated by shaking-flask culture. The results show that the consortium S can completely biodegrade 0.1 g/L TNT in solution in the presence of both external carbon and nitrogen sources, whereas the biodegradation efficiency of TNT reaches 80% and 12%, respectively, with external carbon source only and nitrogen source only. Highly active nitroreductase was detected in the S1 catalyst system. This enzyme transformed TNT into a condensation product, diazodinitrotoluene, which was further degraded through ring cleavage catalyzed by the combined action of highly active toluene dioxygenase and catechol dioxygenase produced in the case of coexistence of S1 and S2. Nitro groups in TNT were released during the ring cleavage of diazodinitrotoluene, resulting in the formation of NO2-, which was further oxidized into NO3-. This bacterial consortium has greater potentials in biodegradation of TNT than the single bacterium.

语种中文
WOS记录号WOS:000273619500014
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
文献类型期刊论文
条目标识符http://ir.bjmu.edu.cn/handle/400002259/62991
Collection北京大学基础医学院
作者单位1.Beijing Inst Technol, Sch Chem Engn & Environm, Environm & Energy Dept, Beijing 100081, Peoples R China
2.Peking Univ, Hlth Sci Ctr, Sch Basic Med Sci, Beijing 100083, Peoples R China
Recommended Citation
GB/T 7714
Guo Xiaojie,Xin Baoping,Ma Xingtai,et al. Biodegradation of Trinitrotoluene by a Bacterial Consortium Containing Klebsiella sp and Burkholderia sp.[J]. CHINESE JOURNAL OF CATALYSIS,2009,30(12):1261-1268.
APA Guo Xiaojie,Xin Baoping,Ma Xingtai,Xia Yunting,Chen Shi,&Yang Yepeng.(2009).Biodegradation of Trinitrotoluene by a Bacterial Consortium Containing Klebsiella sp and Burkholderia sp..CHINESE JOURNAL OF CATALYSIS,30(12),1261-1268.
MLA Guo Xiaojie,et al."Biodegradation of Trinitrotoluene by a Bacterial Consortium Containing Klebsiella sp and Burkholderia sp.".CHINESE JOURNAL OF CATALYSIS 30.12(2009):1261-1268.
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