Biodecolorization of Disperse Acid Red 88

Synthetic dyes are among the pollutants that have been entered into the environment with the effluent of industrial factories.These dyes cause pollution of natural ecosystems such as soil, surface, and groundwater and living organisms. Azo dyes are the most common synthetic dyes. Therefore, to prevent the contamination of vulnerable sources, it is important to remove colored contaminants, especially from textile effluents. Various microorganisms, including bacteria, have been used to biodegradation of these dyes. Azo dyes are the most important and largest category of dyes that are widely used. This study aimed to isolate and identify dye degrading microorganisms from textile industry effluents. Twenty bacterial strains were isolated from the textile effluent, and one-strain was selected. This strain exhibited a remarkable ability to decolorize Acid Red 88. This gram-positive strain showed a great ability to decolorize at pH 7 and 37°C after 48 h. The results of UV–Vis analyses indicated that decolorization was due to biodegradation.

Keywords:

Bacterial strain , Acid Red 88 , Decolorization , Textile effluents , Azo dyes