The Effect of UV/TiO2/H2O2 Process and Influence of Operational Parameters on Photocatalytic Degradation of Azo Dye in Aqueous TiO2 Suspension

Abstract

In this work a detailed investigation of heterogeneous photocatalytic degradation of Navy blue HE2R 1 (NB), azo dye of the reactive class is presented using UV/TiO2/H2O2 process in the aqueous suspension under 8W low-pressure mercury vapor lamp irradiation. Here we also report about optimization of various experimental parameters such as effect of catalyst concentration, effect of substrate concentration, effect of H2O2 addition. The effect of the UV/TiO2/H2O2 process employment and selection of optional operational parameters on complete decolorization and substantial decrease of Chemical Oxygen Demand (COD) and Total Organic Carbon (TOC) of dye solution has been established.