Decolorization of reactive yellow dye by advanced oxidation using continuous reactors

Abstract EN

The photocatalytic decolorization of reactive yellow dye from aqueous solution was investigated by using TiO2 photocatalyst.

Heterogeneous photocatalytic processes applied under natural weathering conditions, in the presence of UV lamp show a promising degradation capability.

In this study, synergistic effects of factors such as flow rate, and number and intensity of UV lamps were scrutinized in continuous photocatalytic reactor at constant best conditions obtained from the batch reactor tests pH=7, TiO2 concentration (25mg/l), 400 mg/l dosage of H2O2.

Moreover, the maximum removal of dye achieved at 60 minutes, in the presence of two UV-light, 20mg/l dye concentration and at (5 l/h) flow rate was found to be 95.47%, also the reaction was found to be of a first order throughout the system