Decolorization of Anthraquinonic Dyes from Textile Effluent Using Horseradish Peroxidase: Optimization and Kinetic Study

Figure 5

The influence of the initial pH on AB 225 and AV 109 decolorization at 24°C with 0.15 IU/mL HRP. Reaction conditions for AB 225: 32 minutes, dye concentration 30 mg/L, and hydrogen peroxide concentration 0.04 mM; for AV 109: 15 minutes, dye concentration 30 mg/L, and hydrogen peroxide concentration 0.4 mM. Relative standard deviations (RSD) of triplicate measurements were always less than 5%.