Isolation and optimization of culture conditions for decolorization of textile waste effluent using screened fungi

Abstract

Isolation and identification of dye decolorizing fungal isolate from textile dye effluent was carried out. The isolates of Aspergillus flavus, Aspergillus fumigates, Aspergillus niger, Aspergillus oryzae, and Penicillium sp. Penicillium notatum were isolated from the textile effluent samples collected from Sanagner area, Jaipur. Different parameters were used for optimizing. Conditions for maximum decolorization effect by the fungal isolates. The optimization conditions used to decolorize textile effluent were different pH, temperature, aeration carbon, and nitrogen. Among the different pH used, A. niger and A. oryzae showed maximum dye decolorization (79.09±0.29% and 80±0.31%) with pH 5. Among the different temperatures used. A. niger and A. oryzae showed maximum dye decolorization (87±0.34%, 85±0.24%) with 30^oC temperature. Among the carbon sources, A. niger and A. oryzae showed maximum dye decolorization (83.9±0.33% and 85.09±0.32%) with glucose as a carbon source. Among the nitrogen sources used, A. niger and A. oryzae showed maximum dye decolorization (83.9±0.25% and 85.09±0.31%) with Ammonium Sulphate as a nitrogen source. It is clearly evident from the results that fungal isolates were able to decolorizing the textile dye in effluent efficiently. Dye decolorization with microorganisms is low cost effective and environmentally friendly and the only way for ultimate controlling of pollution generated by textile and dyestuff industries. However, more and more research and development works are needed to develop a viable alternative process for the treatment of textile effluent.