Enhanced photocatalytic degradation of furfural and a real wastewater using UVC/TiO2 nanoparticles immobilized on white concrete in a fixed-bed reactor

TiO2 nanoparticles were immobilized on a concrete surface of fixed-bed reactor and used for furfural photocatalytic degradation of real and synthetic wastewater. At optimum conditions of initial pH 9, TiO2 loading density 50 g/m(2) and UV irradiation intensity 24W, the furfural and COD removal were 983% and 842% respectively for synthetic wastewater after 5 h, while for real wastewater, COD and MC removal reached 59.53% and 86.65%, respectively after 8 h. The composite reused for four consecutive cycles with maximum 4.4% reduction in efficiency for both cases. Moreover, pseudo-first-order kinetics were best fitted to experimental data in both cases. (C) 2018 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.