Abstract
The aim of this study was to investigate the efficiency of the electrochemically assisted photocatalytic process in the degradation of C. I. Reactive Blue 19 on a Ti/Ru 0,3Ti 0,7O 2 electrode. By using the quartz device and the Ti-supported noble metal oxide coating, decolorizations ratios higher than 95% and TOC reduction of about 52% were observed during a period of 120 min. Comparing this value with the sum of the decolorization ratios obtained by a single application of electrochemical and photochemical procedures, it is possible to observe a significant synergic effect between both processes. The electrochemical process was conduced at 28°C (refrigeration with air) and pH of 11.0, and with a constant potential of 1.8 V versus Ag/AgCl. With these conditions, the mean current was 23 mA. The voltammetric results also confirm the synergic effect of the simultaneous process.
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