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中国生物工程杂志

China Biotechnology
China Biotechnology  2010, Vol. 30 Issue (05): 76-80    DOI:
    
Screening and Characteristics of Azo dye Decoloring Alkali-resistant Bacteria
ZHANG Sheng-qin1,CHEN Bi-qiang2,YANG Guang3,LI Chun4,CAO Zhu-an2
1.College of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, China
2.Institute of Biochemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
3.Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin 300308, China
4.School of Life Science and Technology, Beijing Institute of Technology, Beijing 100081, China
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Abstract  

Studies were carried out to isolate Acid Scarlet GR resistant and decolored bacteria from sludge of a wastewater treatment plant, Zhejiang Province. Through dyeing decoloring tests, one strain, named Z1 was found to have a better decolorization performance at the high pH 12 and identified as Staphylococcus pasteuri by 16SrDNA gene sequence analysis. A strain named Z1 was screened through dye decolorization test and was identified as Staphylococcus pasteuri by 16SrDNA gene sequence analysis. And then the decolorization properties of Z1 were investigated. The results showed that the decolorization rate of 50mg/L Acid Scarlet GR could exceed 90% within 40h under anaerobic conditions at the range of pH 7~12, and the decolorization rate of 300mg/L Acid Scarlet GR even reached 93% within 48h. Moreover, the strain could effectively degrade other azo dyes with broad spectrum and could be applied for removing the azo dyes from the industrial wastewater.



Key wordsazo dye      Staphylococcus pasteuri      Alkali-resistant bacteria      broad-spectru     
Received: 10 March 2010      Published: 25 May 2010
Cite this article:

ZHANG Qing-Qin, CHEN Bi-Jiang, YANG Guang, LI Chun, CAO Zhu-An. Screening and Characteristics of Azo dye Decoloring Alkali-resistant Bacteria. China Biotechnology, 2010, 30(05): 76-80.

URL:

https://manu60.magtech.com.cn/biotech/     OR     https://manu60.magtech.com.cn/biotech/Y2010/V30/I05/76

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