The oxidative removal of Reactive Brilliant Blue wastewater by Fenton′s reagent

The oxidative removal of anthraquinone dye Reactive Brilliant Blue KN-R in aqueous solution by Fenton′s reagent was studied. After 30 min, 96.2% removal rate of Reactive Brilliant Blue in water(pH=3.0) was achieved when the H2 O2 dosage, initial concentrations of Fe(Ⅱ) and Reactive Brilliant Blue were 0.5 mmol/ L, 0.05 mmol/L and 20 mg/L, respectively. A relatively low concentration of Fe(Ⅱ) was maintained during reaction process when H2 O2 and Fe(Ⅱ) were added with high concentration, and thus Reactive Brilliant Blue was degraded quickly. With increasing the initial concentration of Reactive Brilliant Blue, its removal rate reduced gradually when the initial concentrations of H2 O2 and Fe(Ⅱ) were certain in Fenton′s system.