Biotechnology and Bioprocess Engineering

, Volume 9, Issue 4, pp 309–312 | Cite as

Semicontinuous decolorization of azo dyes by rotating disc contactor immobilized withAspergillus sojae B-10

  • Beung Ho Ryu


Aspergillus sojae B-10 was immobilized and used to treat model dye compounds. The model wastewater, containing 10 ppm of azo dyes such as Amaranth, Sudan III, and Congo Red, was treated with cells attached to a rotating disc contactor (RDC). Amaranth was decolorized more easily than were Sudan III and Congo Red. Decolorization of Amaranth began within a day, and the dye was completely decolorized within 5 days of incubation. Both Sudan III and Congo Red were almost completely decolorized after 5 days of incubation. Semicontinuous decolorization of azo by reusing attached mycelia resulted in almost complete decolorization in 20 days. This experiment indicated that decolorization was successfully conducted by removing azo dyes withAspergillus sojae B-10.


azo dye decolorization rotating disc contactor Aspergillus sojae 


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Copyright information

© The Korean Society for Biotechnology and Bioengineering 2004

Authors and Affiliations

  1. 1.Department of Food Science and BiotechnologyKyungsung UniversityBusanKorea

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