3.4. Effect of initial concentration of dye
Initial concentration of dyes is an important parameter in
practical application. The effects of initial dye concentrations
25, 50, 75, 100, 125 and 150 mg L1 on color and COD removal
efficiencies of DB71 were evaluated at 125 mg L1
H2O2 and 3 mg L1 Fe2+ at pH 3.0. As shown in Fig. 5, the