A COMPARISON OF ELECTRODEPOSITED Ti/β-PbO2 AND Ti-Pt/β-PbO2 ANODES IN THE ELECTROCHEMICAL DEGRADATION OF THE DIRECT YELLOW 86 DYE#
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چکیده
The electrochemical performance of electrodeposited Ti/β-PbO 2 and Ti-Pt/β-PbO 2 anodes was galvanostatically evaluated (batch mode, 50 mA cm) to degrade the Direct Yellow 86 dye (100 or 200 mg L in 0.1 mol L Na 2 SO 4 + 1.5 g L NaCl), investigating the effect of pH and temperature. Similar results were obtained for both electrodes and the best conditions for removal of color and chemical oxygen demand are pH 7 and 40 °C, when 90% decolorization is attained by passing a charge of only ~0.13 A h L and total mineralization is achieved with expenditure of ~5 kW h m.
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