Biodecolorization and biodegradation of Reactive Blue by Aspergillus sp.

Aspergillus sp. effectively decolorized Reactive Blue and other structurally different synthetic dyes. Agitation was found to be an important parameter, while glucose (99%), sucrose (97%) and mannitol (98%) were the best carbon sources for the decolorization. Decolorization was effective in an acidic environment (pH 3). Few chemically different dyes such as Reactive Black (75%), Reactive Yellow (70%), Reactive Red (33%) and Coloron Violet (66%) were decolorized moderately.The dye Coloron Black (9%) was highly resistant for decolorization by Aspergillus sp. Both spectral analysis and HPLC analysis were confirmatory to degradation.