Photocatalytic Degradation of Reactive Brilliant Blue KN-R by Titanium Dioxide

Photocatalytic degradation of simulated wastewater of Reactive Brilliant Blue KN-R was investigated by using nano-TiO2 as photocatalyst. Effects of operation parameters such as initial dye concentration,catalyst loading,hydrogen peroxide dosage as well as initial pH value on decolorization were studied. Results showed that the decolorization of the dye increased with increase of pH value and decrease of the dye concentration. Decolorization of the dye would decrease when the addition of TiO2 and H2O2 were beyond or below specific amounts and optimum amounts of TiO2 and H2O2 were under the experimental conditions of 0.5g/L and 2.0×10-2mol/L respectively. Under the suitable operating conditions,the decolorization of Reactive Brilliant Blue KN-R was beyond 98% and removal of COD of the dye was above 70%.