Fig. 9

Effect of initial pollutant concentrations using modified Fenton’s system for (a) MG (H2O2 400 mg/L; Co/Fe@C 40 mg/L; pH 6.4), (b) OOSS (H2O2 400 mg/L; Co/Fe@C 10 mg/L; pH 3.0) and (c) TC (H2O2 400 mg/L; Co/Fe@C 40 mg/L; pH 7.2)

Effect of initial pollutant concentrations using modified Fenton’s system for (a) MG (H2O2 400 mg/L; Co/Fe@C 40 mg/L; pH 6.4), (b) OOSS (H2O2 400 mg/L; Co/Fe@C 10 mg/L; pH 3.0) and (c) TC (H2O2 400 mg/L; Co/Fe@C 40 mg/L; pH 7.2)