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Content Provider | World Health Organization (WHO)-Global Index Medicus |
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Author | Champagne, P-P Ramsay, J. A. |
Description | Author Affiliation: Champagne PP ( Chemical Engineering, Queen's University, Kingston, Ontario, Canada K7L 3N6.) |
Abstract | The decolorization and detoxification of textile dyes by fungal laccase immobilized on porous glass beads were evaluated. Anthraquinone (Reactive blue 19 and Dispersed blue 3) and indigoid (Acid blue 74) dyes were degraded more rapidly than the azo dyes (Acid red 27 and Reactive black 5). There was no dye sorption to the enzyme bed when decolorization rates were high (>12 microM dye/U-h) but at moderate rates (8 to>0.06 microM/U-h), there was a transient color which disappeared upon prolonged exposure. With Reactive black 5, permanent adsorption occurred most likely because laccase had been totally inactivated. Although laccase treatment was more efficient at decolorizing the anthraquinone dyes, their toxicity (as determined by the Microtox assay) increased while the less efficiently decolorized solutions of azo and indigoid dyes became less toxic. These results demonstrate the potential and limitations of using immobilized laccase to enzymatically decolorize a range of different dye classes and reduce dye toxicity in a single step. |
ISSN | 09608524 |
Issue Number | 7 |
Volume Number | 101 |
e-ISSN | 18732976 |
Journal | Bioresource Technology |
Language | English |
Publisher | Elsevier |
Publisher Date | 2010-04-01 |
Publisher Place | Great Britain (UK) |
Access Restriction | Subscribed |
Subject Keyword | Coloring Agents Metabolism Enzymes, Immobilized Glass Chemistry Laccase Microspheres Trametes Enzymology Absorption Drug Effects Biodegradation, Environmental Color Toxicity Inactivation, Metabolic Porosity Journal Article Research Support, Non-u.s. Gov't Discipline Bioresource |
Content Type | Text |
Resource Type | Article |
Subject Domain (in MeSH) | Eukaryota Enzymes and Coenzymes Chemical Actions and Uses Equipment and Supplies Physical Phenomena Metabolism Technology, Industry, and Agriculture Environment and Public Health |
Subject | Bioengineering Renewable Energy, Sustainability and the Environment Waste Management and Disposal Environmental Engineering Medicine |
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