Development and Evaluation of a Photoreactor Based on Supported Nanostructured TiO2 Photocatalysts for Treatment of Pollutants in Water

A. DWOJAK; M. VERA; H. TRAID; M. ROSENBERGER; C. SCHVEZOV; M. LITTER

Conferencia; 6th Iberoamerican Conference on Advanced Oxidation Technologies CIPOA; 2024

The study focused on the design, construction and operation of a photoreactor using supported nanostructured TiO2 photocatalysts for degradation of pollutants in water. Glass was used as the construction material, with concentric tubes housing a UV lamp and TiO2-coated rings. The rings were prepared by anodic oxidation of titanium tubes, being composed of anatase nanostructures confirmed by SEM, XRD and DRS analyses. To evaluate the performance of the photoreactor, the Cr(VI)/EDTA system (0.4 mM K2Cr2O7 and 1 mM EDTA) at pH 2, was used. The photoreactor operated under recirculation and was evaluated by reduction of Cr(VI) in the presence of EDTA, achieving 100% Cr(VI) transformation in 180 min, the kinetics fitting well to a pseudo-first-order model. These findings underline the successful development and promising performance of the designed photoreactor.