Biodegradation

, Volume 19, Issue 1, pp 15–19

A novel moderately halophilic bacterium for decolorizing azo dye under high salt condition

  • Jianbo Guo
  • Jiti Zhou
  • Dong Wang
  • Cunping Tian
  • Ping Wang
  • M. Salah Uddin
Original Paper

DOI: 10.1007/s10532-007-9110-1

Cite this article as:
Guo, J., Zhou, J., Wang, D. et al. Biodegradation (2008) 19: 15. doi:10.1007/s10532-007-9110-1

Abstract

Halomonas sp strain GTW was newly isolated from coastal sediments contaminated by chemical wastewater and was identified to be a member of the genus Halomonas by 16S rDNA sequence analysis and physical and biochemical tests. The optimal decolorization conditions were as follows: temperature 30°C, pH 6.5.0–8.5, NaCl 10–20% (w/v) and the optimal carbon source was yeast exact. The results of experiments demonstrated that the bacteria could decolorize different azo dyes under high salt concentration conditions, and the decolorization rate of five tested azo dyes could be above 90% in 24 h. The exploitation of the salt-tolerant bacteria in the bio-treatment system would be a great improvement of conventional biological treatment systems and the bio-treatment concept.

Keywords

Halophilic bacteriaDecolorizationHalomonasAzo dyes

Copyright information

© Springer Science+Business Media B.V. 2007

Authors and Affiliations

  • Jianbo Guo
    • 1
    • 2
  • Jiti Zhou
    • 1
  • Dong Wang
    • 1
  • Cunping Tian
    • 1
  • Ping Wang
    • 1
  • M. Salah Uddin
    • 1
  1. 1.School of Environmental and Biological Science and TechnologyDalian University of TechnologyDalianP.R. China
  2. 2.School of Environmental Science and EngineeringHebei University of Science and TechnologyShijiazhuangP.R. China