Decolorization of Isolan Dark Blue dye by Irpex lacteus

다국어 초록 (Multilingual Abstract)

Effluents containing dye is of highly problematic because when they are released in environment they exhibit toxic effects on organisms and reduce the sunlight penetration. Bioremediation of textile dyes are environment friendly and cost competitive. The present study was carried to decolorize the Isolan dark blue dye by the white rot fungi Irpex lacteus. The decolorization reactions were carried at different pH 5.0, 6.0, 7.0. 8.0, 9.0, and at different temperatures 20°C, 25°C, 30°C and 35°C. Decolorization of the dye was also carried at different concentrations ranging from 50-250㎎/l. The percentage of decolorization was checked for every 12 hours and it was found that the dye was decolorized completely at the maximum of fourth day with all the parameters tested. The alkaline pH increased the decolorization rate than the acidic and neutral pH. The temperature had no significant influence on the decolorization rate the decolorization percentage was similar at the temperatures 25°C, 30°C and 35°C and it was slow at the 20°C. The dye was completely decolorized at the third day for concentrations of 50㎎/l and 100㎎/l whereas the 150, 200 and 250㎎/l concentrations were decolorized completely on the fourth day. The decolorization of the dye was confirmed by the UV spectrum analysis. The present study suggests that the fungus Irpex lacteus can be effectively used for the bioremediation of the Isolan dark blue dye.

목차 (Table of Contents)

• Abstract
• 1. Materials and Methods
• 2. Results and Discussion
• 3. Conclusion