Fe (III)-Oxalate Mediated Solar Degradation of Reactive Dyes in the Presence of NaCl

NaCl was used for investigating its effect on the photocatalytic decomposition of two reactive dyes including Reactive Red 195 and Reactive Blue 222 in water using Fe (III)-oxalate complexes/H₂O₂ system under sunlight irradiation. Some important variables such as NaCl dosage and solar irradiation intensity were examined. Dye degradation and mineralization were examined and compared by UV-Vis spectrum and TOC measurements, respectively. The results indicate that dye decomposition was significantly reduced by the presence of NaCl on cloudy day. Moreover, increasing NaCl concentration could give rise to low degradation efficiency.