Decolorization and biodegradation of reactive BLUE 220 (cas 114090-18-5) textile dye by Lentinus crinitus extracellular extract

Add time:08/26/2019    Source:sciencedirect.com

Studies were carried on the decolorization of the textile dye reactive BLUE 220 (cas 114090-18-5) (RB220) by a novel isolate of Lentinus crinitus fungi. The optimal conditions for the production of destaining activity were obtained in media containing intermediate concentrations of ammonium oxalate and glucose (10 g L−1) as nitrogen and carbon sources, respectively, at 28 °C and pH 5.5. Maximum decolorization efficiency against RB220 achieved in this study was around 95%. Ultra-violet and visible (UV–vis) spectrophotometric analyses, before and after decolorization, suggest that decolorization was due to biodegradation. This effect was associated with a putative low molecular weight laccase (41 kDa) displaying good tolerance to a wide range of pH values, salt concentrations and temperatures, suggesting a potential role for this organism in the remediation of real dye containing effluents.

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