Authors : Ingle. M. R
Page Nos : 304-310
Description :
Utilization of fungi for the removal of dyes and treatment of textile effluents is an eco-friendly, cost effective alternative. In this study, varied fungal forms were isolated from the soils near the Thane creek, Maharashtra. The isolated fungal forms were screened for their azo dye degrading capacities by qualitative methods. The azo dyes used were Congo red, Bromophenol Blue and Methyl orange. A zone of hydrolysis around the fungal colony or change in the original colour of the dye and visual disappearance of colour from the petriplate inoculated with the fungus was observed. Of all the fungal forms Aspergillus nige and Trichoderma sp. showed high dye decolorization potentials. Percentage decolourization was studied for Aspergillus niger and Trichoderma sp using uv- visible spectrophotometer analysis. Aspergillus niger showed highest percentage decolourization for bromophenol blue (97.39%) whereas Trichoderma sp showed showed highest percentage decolourization for Congo red (87.75%). The decolorization of azo dyes by the fungi can be attributed to the production of extracellular lignin modifying enzymes.
