Tratamento eletroquímico de azo corante acid red 27 em solução aquosa usando anodo de Ti/Ru0,3Ti0,4Sn0,3O2

Abstract

In this work was investigated the efficiency of the electrooxidation processes in the degradation of azo dye Acid Red 27 at room temperature in aqueous solution at different concentrations (5, 10, 15 and 25 mg/L) and under different potential electrolysis (1.0, 1.25, 1.5 and 2.0V) using as active electrochemical phase oxides type TiO2, RuO2 and SnO2 supported on titanium. For the electrochemical degradation was used dimensionally stable anode of Ti/Ru0,3Ti0,4Sn0,3O2 prepared by thermal decomposition and characterized from the techniques of scanning electron microscopy and energy dispersive X-ray .The results showed high degradtion (> 88%) for all the concentrations investigated under potential of 2.0V. The kinetic behavior was typically of first order.