African Journal of
Microbiology Research

  • Abbreviation: Afr. J. Microbiol. Res.
  • Language: English
  • ISSN: 1996-0808
  • DOI: 10.5897/AJMR
  • Start Year: 2007
  • Published Articles: 5255

Full Length Research Paper

Biodegradation of reactive red 195 azo dye by the bacterium Rhodopseudomonas palustris 51ATA

Leyla Çelik1, Ayten Öztürk1* and Meysun I. Abdullah2        
1Department of Biology, Faculty of Art and Science, NiÄŸde University, Campus, 51240 NiÄŸde, Turkey. 2Department of Chemistry, Faculty of Art and Science, NiÄŸde University, Campus, 51240 NiÄŸde, Turkey.
Email: [email protected]

  •  Accepted: 30 November 2011
  •  Published: 09 January 2012

Abstract

The sulphonated reactive red 195 dye (RR195) was used as carbon source and energy by the widely spread, eco-friendly, photoheterothrophic strain 51ATA that belongs toRhodopseudomonas palustris. This bacterium, which was isolated from Lake Akkaya, (NiÄŸde, Turkey), was able to completely degrade and mineralize the dye under anaerobic conditions with 100% efficiency. The degradation efficiency of this strain, in the presence and absence of a co-substrate was investigated. The biodegradation of the dye was monitored by UV-visible, (FTIR) spectroscopy and HPLC. From these analyses, a complete mineralization of the toxic aromatic ring system of the reactive red 195 dye was observed.

 

Key words: Biodegradation, decolorisation, biomineralisation, azo dye, reactive red 195,Rhodopseudomonas palustris.

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This article is published under the terms of the Creative Commons Attribution License 4.0

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