Removal of Methylene Blue Dye Using Titanium Dioxide Photocatalyst

The application of dyes in different process industries will cause environmental impact. Thus, the need for removal of dyes using an Advanced oxidation process is a vital issue to decrease the effect of dyes. An Advanced oxidation process works based on the generation of hydroxyl radicals as an intermediate to takes place the photocatalytic process under UV irradiation. Titanium dioxide was used in the photocatalytic decolorization study of a dye i.e., methylene blue (MB). During Usage of this semiconductor as a photocatalyst for removal of dye, physiochemical characteristics of the photocatalyst, the effect of the various process parameters like initial dye concentration, catalyst loading, and UV irradiation time on the photodegradation of MB were investigated using surface Response methodology. We obtain that the photocatalyst material has anatase composition of 100%, the specific surface area 55.64 m 2 /g and crystallite size of 39.93 nm respectively. In addition to this, analysis on degradation of methylene blue (MB) as an organic dye pollutant upon photocatalytic oxidation of TiO 2 nanoparticles under UV-light (393 nm) irradiation was optimized. According to analysis of variance numerical optimization 94.89 % removal efficiency were predicted through adjusting the selected parameters under specified or bounded conditions. Furthermore, the rate of dye degradation (reaction) kinetics were also studied. The result indicates from first order Languier-Hinshewood kinetics model, is good fitting with regression coefficient of 97.93 %.