Congo Red Decolorization and Detoxification by Aspergillus niger: Removal Mechanisms and Dye Degradation Pathway

Figure 3

Changes in UV-visible absorption spectrum of CR (200 mg.L-1) before and after CR decolorization by A. niger treatment at shaking condition (200 mg. L⁻¹ CR dye at pH 6.0 ± 0.2 shaked at 150 rpm incubated at 30°C for 8 days).