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Reactive blue 19 decolouration by laccase immobilized on silica beads

Champagne, P.-P., Ramsay, J.A.·2007·Applied Microbiology and Biotechnology

Abstract

Laccase (31.5 U of activity/g or 4.39 mug of protein/m(2)) from Trametes versicolor was immobilized on controlled-porosity-carrier silica beads and evaluated for the decolouration of Reactive blue 19, an anthraquinone dye. Although there was an initial, rapid adsorption of the dye to the packed bed in a recirculating reactor, about 97.5% of Reactive blue 19 removal was due to enzymatic degradation. The free enzyme lost 52% of its activity in 48 h. However, the activity of the immobilized laccase was unchanged after 4 months of storage in phosphate buffer under ambient conditions followed by three successive decolourations over 120 h. Treating the laccase immobilized beads with ethanolamine reduced dye adsorption by 40%.

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Crossref · 10.1007/s00253-007-1208-1

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Research works printed but not linked: 18

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Metadata

Authors
Champagne, P.-P., & Ramsay, J. A.
Venue
Applied Microbiology and Biotechnology
Published
2007-10-05
Volume
77
Issue
4
Pages
819-823
ISSN
  • 0175-7598
  • 1432-0614
Cited by
59
References
0
Language
en

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