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Biodegradation of Direct Blue 15 by Free and Immobilized Trametes versicolor
To investigate biodegradability by Trametes versicolor, five structurally different direct azo‐dyes—Direct Black 38, Direct Blue 15 (DB 15), Direct Orange 26, Direct Green 6, and Direct Yellow 12—were studied. The DB 15 was determined as the best biodegradable dye by this white‐rot fungus. Laccase and manganese peroxidase activities were monitored with the biodegradation process; it was observed that laccase played an important role in the dye degradation, while manganese peroxidase activity could not be detected. Possible degradation products also were examined by gas chromatography‐mass spectrometry, but no metabolite was detected after the degradation and/or decolorization process. To enhance performance of the fungi during the degradation, Trametes versicolor cells were immobilized in alginate beads. Then, DB 15 decolorization by immobilized Trametes versicolor was studied in a small‐scale packed‐bed reactor. The color removal efficiency in repeated batches was found to be 98 and 93% for 50 mg/L DB 15.
Biodegradation of Direct Blue 15 by Free and Immobilized Trametes versicolor
To investigate biodegradability by Trametes versicolor, five structurally different direct azo‐dyes—Direct Black 38, Direct Blue 15 (DB 15), Direct Orange 26, Direct Green 6, and Direct Yellow 12—were studied. The DB 15 was determined as the best biodegradable dye by this white‐rot fungus. Laccase and manganese peroxidase activities were monitored with the biodegradation process; it was observed that laccase played an important role in the dye degradation, while manganese peroxidase activity could not be detected. Possible degradation products also were examined by gas chromatography‐mass spectrometry, but no metabolite was detected after the degradation and/or decolorization process. To enhance performance of the fungi during the degradation, Trametes versicolor cells were immobilized in alginate beads. Then, DB 15 decolorization by immobilized Trametes versicolor was studied in a small‐scale packed‐bed reactor. The color removal efficiency in repeated batches was found to be 98 and 93% for 50 mg/L DB 15.
Biodegradation of Direct Blue 15 by Free and Immobilized Trametes versicolor
Pazarlioglu, Nurdan Kasikara (author) / Akkaya, Alper (author) / Akdogan, Hatice Ardag (author) / Gungor, Burcin (author)
Water Environment Research ; 82 ; 579-585
2010-07-01
7 pages
Article (Journal)
Electronic Resource
English
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