Wastewater, from the textile and other dyestuff industries containing synthetic dyes, require prior treatment to prevent groundwater contamination. The microbial decolorization and degradation of these dyes play a pivotal role in this aspect. Pseudomonas desmolyticum NCIM 2112 and Galactomyces geotrichum MTCC 1360 could bring about oxidative degradation resulting in decolorization of this water insoluble Vat Red 10 (Novatic red 3B) dye at pH 9, at 25°C. The decolorization was measured as the decrease in absorbance maxima at 530 nm. The end product of degradation and decolorization was 2, 6-Di isopropyl Naphthalene (2, 6-DIPN), which is an important plant growth factor.
Key words: Vat dyes, vat red 10(Novatic Red3B), dye decolorization, textile, Pseudomonas desmolyticum, Galactomyces geotrichum, wastewater, 2, 6-DIPN.
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