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Updated: Jun 25, 2026

Immobilization of Multi-biocatalysts in Alginate Beads for Cofactor Regeneration and Improved Reusability
Published on: April 22, 2016
Enhanced bio-decolorization of azo dyes by co-immobilized quinone-reducing consortium and anthraquinone
Yanyan Su1, Yifeng Zhang, Jing Wang
1School of Environmental and Biological Science and Technology, Dalian University of Technology, No. 2, Linggong Road, Dalian, Liaoning 116023, PR China. suyanyan_1982@hotmail.com
Abstract:
In the present study, the accelerating effect of co-immobilized anthraquinone and quinone-reducing consortium was investigated in the bio-decolorization process. The anthraquinone and quinone-reducing consortium were co-immobilized by entrapment in calcium alginate. The co-immobilized beads exhibited good catalytic activity and increased the decolorization rate for many kinds of azo dyes. The reusability of the co-immobilized beads was evaluated with repeated-batch decolorization experiments. After ten repeated experiments, the decolorization rate of co-immobilized beads retained over 92.8% of their original value. Furthermore, acclimatized quinone-reducing consortium was analyzed by denaturing gradient gel electrophoresis (DGGE) and 16S rDNA gene sequencing to get the complete picture of its diversity. This study explored a great improvement of conventional treatment system and the new bio-treatment concept.
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