In this research, aerobic decolorization of different azo dyes by a microbial community was studied. The results showed that more than 80% of four azo dyes (100 mg/L) could be aerobically decolorized by the microbial consortium, however, the time needed was obviously different. Kinetic data indicated that the processes were well described by zero-order kinetics, and the chemical structures of dyes had obvious influence on decolorization rates. On the other hand, effects of salinity on decolorization were also investigated. There was still 40% dye removal for Acid Brilliant Red GR when the salinity increased to 250 g/L. And the microbial community structures with different salinity were detected by PCR-DGGE. It was shown that the same two bacteria were dominant in all decolorization systems, and some typical halophilic microorganisms were found under higher-salt conditions.
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Research Article|
April 01 2012
Influence of dye type and salinity on aerobic decolorization of azo dyes by microbial consortium and the community dynamics Available to Purchase
Liang Tan;
1School of Life Science, Liaoning Normal University, Liushunan Street No. 1, 116029 Dalian, Liaoning, China
E-mail: [email protected]
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Shuxiang Ning;
Shuxiang Ning
1School of Life Science, Liaoning Normal University, Liushunan Street No. 1, 116029 Dalian, Liaoning, China
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Ying Wang;
Ying Wang
1School of Life Science, Liaoning Normal University, Liushunan Street No. 1, 116029 Dalian, Liaoning, China
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Xiangyu Cao
Xiangyu Cao
2Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Linggong Road No. 2, 116023 Dalian, Liaoning, China
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Water Sci Technol (2012) 65 (8): 1375–1382.
Article history
Received:
September 07 2011
Accepted:
November 25 2011
Citation
Liang Tan, Shuxiang Ning, Ying Wang, Xiangyu Cao; Influence of dye type and salinity on aerobic decolorization of azo dyes by microbial consortium and the community dynamics. Water Sci Technol 1 April 2012; 65 (8): 1375–1382. doi: https://doi.org/10.2166/wst.2012.016
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