Photocatalytic Degradation of Textile Dye (ACID Red 114) from Aqueous Solution using Immobilized Tube Reactor

Abstract

In this study the Photocatalytic degradation of textile dye (Acid Red 114) from aqueous solution has been investigated using immobilized nano TiO2 photocatalyst under UV light. Nano sized Titanium dioxide (TiO2) powder was synthesized by sol-gel method using titanium tetra chloride (TiCl4) as the precursor. The prepared photocatalyst were characterized by scanning electron micrographs (SEM). The investigated nanoparticle of titanium dioxide was immobilized on Quartz surface using heat attachment method. Photocatalytic degradation experiments were carried in a circulation photo reactor with a 15 W UV lamp radiating around 365 nm. All the experiments were carried out as a function of irradiation time, pH, initial dye concentration, and Catalyst concentration. The optimum condition for AR 114 removal were found to be pH = 2, adsorbent dosage = 0.6 gm/l of solution and dye degradation equilibrium was rapidly attained after 80 minutes of the irradiation time and it was described by the Langmuir and Freundlich adsorption isotherms over the entire concentration range from 20-100 mg/l. Adsorption data?s are used for modeling, from the first and second order kinetic equation.