NDLI: Decolourization of azo dyes by a newly isolated Klebsiella sp. strain Y3, and effects of various factors on biodegradation

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Year: 2014, Volume: 28, Issue: 2

Year: 2014, Volume: 28, Issue: 1

Decolourization of azo dyes by a newly isolated Klebsiella sp. strain Y3, and effects of various factors on biodegradation

Content Provider	PubMed Central
Author	Cui, Daizong Li, Guofang Zhao, Min Han, Song
Copyright Year	2014
Abstract	In this study, we isolated and characterized a new strain of Klebsiella sp. Y3, which was capable of decolourizing azo dyes under anaerobic conditions. The effects of physico-chemical parameters on the Methyl Red degradation by the strain were determined. The results indicated that strain Y3 exhibited a good decolourization ability in the range of pH from 4 to 9, temperature from 30 °C to 42 °C and salinity from 1% to 4%. A broad spectrum of azo dyes with different structures could be decolourized by the strain. The isolate decolourized Methyl Red, Congo Red, Orange I and Methyl Orange by almost 100% (100 mg/L) in 48 h. The culture exhibited an ability to decolourize repeated additions of dye, showing that the strain could be used for multiple cycles of biodegradation. Azo dyes at high concentrations could be tolerated and degraded by Y3. An almost complete mineralization of Methyl Red and Congo Red at the concentration of 800 mg/L was observed within 48 h. The high degradation potential of this bacterium supports its use in the treatment of industrial wastewater containing azo dyes.
Related Links	http://dx.doi.org/10.1080/13102818.2014.926053
Ending Page	486
Page Count	9
Starting Page	478
File Format	PDF
ISSN	13102818
e-ISSN	13143530
Journal	Biotechnology, Biotechnological Equipment
Issue Number	3
Volume Number	28
Language	English
Publisher	Taylor & Francis
Publisher Date	2014-05-04
Access Restriction	Open
Rights Holder	Taylor & Francis
Subject Keyword	Biotechnology Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Biotechnology

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