A comparison of electrodeposited Ti/β-PbO2 and Ti-Pt/β-PbO2 anodes in the electrochemical degradation of the direct yellow 86 dye

Química Nova

José M. Aquino¹  Kallyni Irikura¹  Romeu C. Rocha-filho¹  Nerilso Bocchi¹  Sonia R. Biaggio¹ 

[1] ,Universidade Federal de São Carlos Departamento de Química São Carlos SP ,Brasil

关键词: PbO2 anode;    electrochemical degradation of wastewater;    indirect oxidation;   

DOI  :  10.1590/S0100-40422010001000023

来源: SciELO

【 摘 要 】

The electrochemical performance of electrodeposited Ti/β-PbO2 and Ti-Pt/β-PbO2 anodes was galvanostatically evaluated (batch mode, 50 mA cm-2) to degrade the Direct Yellow 86 dye (100 or 200 mg L-1 in 0.1 mol L-1 Na2SO4 + 1.5 g L-1 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-1 and total mineralization is achieved with expenditure of ~5 kW h m-3.

【 授权许可】

CC BY-NC   
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