الفهرس 
Electrochemical oxidation of industrial wastewaters using differentOnly 14 pages are availabe for public view
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Abstract
This work deals with the possibility of using Pb/PbO2, Ti/Rh-modified and
graphite electrodes for the electrocatalytic oxidation process of some dyes (I-VI). The Pb/PbO2 electrode was prepared by anodization of pretreated lead in 10 % H2SO4. Ti/Rh-modified electrode was prepared by brushing of rhodium nitrate solution on preanodized titanium substrate and annealing. The graphite electrodes was used in the combined process in the presence of transition metals modified kaolin catalyst. The results of the electrolytic oxidation were expressed in term of chemical oxygen demand (COD) removal, which was determined instrumentally. For the Pb/PbO2 and Ti/Rh-modified electrodes (anodes), the highest electro-catalytic activity was obtained in the presence of NaCl as conductive electrolyte. For the graphite electrodes, the highest efficiency of COD removal was obtained in the presence of the transition metals modified kaolin catalyst. The different operating conditions of electrocatalytic oxidation process were studied which include: current density, pH, temperature, electrolysis time, conductive electrolyte concentration and initial dyes concentration. The optimum operating conditions for each of the three above mentioned electrodes were determined.