Biodegradation and biosorption for decolorization of synthetic dyes by Funalia trogii

The objective of this study was to investigate two major mechanisms for decolorization of dyes by cultivation of fungi on either a solid or in a liquid phase and to confirm the possibility of practical application via repeated-batch cultivation. The decolorization of six commercial dyes with 10 fungal strains was studied. Enzyme activity, decolorization trends and decolorization mechanisms were monitored. Under the experimental conditions, extracellular laccase and manganese peroxidase (MnP), but not lignin peroxidase (LiP), were detected. The decolorization mechanisms by F trogii ATCC 200800 involved a complex interaction of enzyme activity and biosorption. This study suggests that it is possible to decolorize a high concentration of commercial dyes, which would be a great advance in the treatment of dye containing wastewater. These methods may have a potential application for dye decolorization and for textile effluent treatment. (c) 2006 Elsevier B.V. All rights reserved.