Current Microbiology

, Volume 76, Issue 2, pp 248–257 | Cite as

Anaerobic Degradation of Chloroanilines by Geobacter sp. KT5

  • Ha Danh Duc Email author
  • Nguyen Thi Oanh 


A chloroaniline-degrading bacterial strain isolated from polluted sediment in the Mekong River was identified as Geobacter sp. KT5. The obtained isolate was found to utilize a wide range of trichloroanilines (TCAs), dichloroanilines (DCAs), monochloroanilines (MACs), and aniline as sources of carbon and energy. It also used Fe(III) as a terminal electron acceptor under anaerobic conditions. Among the chlorinated anilines, KT5 utilized 2,3,4-trichloroaniline (234TCA) with the highest rate (2.48 ± 0.32 µM day−1). On determining the degradation pathway for chloroanilines (CAs) in Geobacter sp. KT5, it showed that the removal of ortho and para halogen was dominant. Firstly, KT5 ortho-dechlorinated some TCAs to DCAs, and then reductively transformed them into MACs and aniline prior to complete degradation with the iron reduction stoichiometry and release of nitrogen and chlorine. The KT5 augmentation in sediment slurry enhanced the degradation of CAs and aniline; however, the anaerobic degradation rates in slurry were significantly lower compared to those in liquid media.



The authors are very thankful to the Center for Chemical Analysis, Dong Thap University, for all their supports and encouragements during their working on this research.


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© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Faculty of Engineering-TechnologyDong Thap UniversityCao LanhVietnam
  2. 2.Center for Chemical AnalysisDong Thap UniversityCao LanhVietnam

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