Oxidative Decolorization of Direct Blue 71 Azo Dye by Saccharomyces cerevisiae Catalyzed by Nano Zero-valent Iron

The textile industries wastewater is one of the most serious sources of environmental pollution due to presence of the textile dyes. In the present study, five bacteria and three fungi were isolated on Mineral Salt Medium (MSM) supplemented with 200 mg/l of Direct Blue 71 azo dye. The most active isolate was identified by 18S-rRNA gene sequencing method as Saccharomyces cerevisiae. The decolorization and degradation of Direct Blue 71 azo dye by S. cerevisiae was investigated in