Application of in situ electrochemically generated ozone for degradation of anthraquninone dye Reactive Blue 19

摘要

Degradation of anthraquninone dye C.I. Reactive Blue 19 (RB19) via generated ozone by electrochemical oxidation process was investigated in this research. Ti/Sn–Sb–Ni electrode was used as an anode for ozone generation. The anode electrode was characterized electrochemically by cyclic voltammetry and characterized morphologically by scanning electron microscopy and X-ray diffraction. The amount of ozone concentration and RB19 degradation increased with increasing of applied voltage, electrolysis time, and in 1 M HClO4 at room temperature. The results of UV/Vis spectroscopy showed that the anthraquinone structure was degraded by dissolved generated ozone and also intermediate compounds were detected by integrated gas chromatography–mass spectrometry (GC/MS). Removal of color and COD were 100 % after 3 min and 48.2 % after 15 min reaction time, respectively.