ELECTRODE COMPOSITION OF REACTIVE BLACK 5 DYE IN AQUEOUS SOLUTION

Abstract

High oxygen evolution overpotential and inexpensive Ti/Co₃O₄/PbO₂/(SnO₂+Sb₂O₃)  and (Ti/(SnO₂+Sb₂O₃) electrodes were investigated in this work. These electrodes were prepared and used as anodes for removal of Reactive Black 5 (RB5) dye in aqueous solution. In some local cases in Palestine, wastewater color was found to be the only problem in meeting local effluent standards. This investigation reveals that both electrodes can remove the color of these dyes completely. After 10 min, nearly complete degradation of RB5 was achieved (99.2%, and 91.90) using Ti/Co₃O₄/PbO₂/(SnO₂+Sb₂O₃)  and (Ti/(SnO₂+Sb₂O₃) electrodes respectively at pH 6.8, current density 30 mA cm^-2 and in the presence of NaCl (4 g L^-1) at 25 ^oC. At the same condition the optimal time for COD removal for Ti/Co₃O₄/PbO₂/(SnO₂+Sb₂O₃)  and Ti/(SnO₂+Sb₂O₃ electrodes was 7 and 9 hours.