Abstract
Effectiveness of the UV-Light emitting diodes (UV-LEDs) for degradation of Direct Red 23 (DR23) using an Advanced Oxidation Process (AOP), (UV-LED/S2O82−) in a continuous photoreactor has been investigated in present work. The effects of operational parameters, such as, dye initial concentration, peroxydisulfate concentration, temperature and photonic efficiency were utilized for the decolorization of DR23. The most valuable characteristic of the present work was in using the controllable UV/LEDs as light illumination source, which provide the changing current intensity and examine the effect of irradiation efficiency. The optimum conditions for higher percentage degradation of DR23 dye were obtained with S2O82− (12.5mM), dye concentration (20ppm), 80% of current intensity.
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