Fotoeletrodos foram usados para tratar efluentes têxteis sintéticos contaminados com corante azul indantreno. Dois meios de tratamento foram usados (NaCl e Na 2 SO 4) com variações de temperatura, pH, densidade de corrente, concentrações de corante e de cloreto. Um método de Pechini modificado foi aplicado para obter os eletros de Ti/Ru (Ti, Ru, Ti 0.5 Ru 0.5 , Ti 0.75 Ru 0.25 e Ti 0.25 Ru 0.75) contendo nanoparticulas de TiO 2 anatase e a análise de degradação de cor foi realizada. Caracterizações física (microscopia de força atômica e difratometria de raios X) e eletroquímica (voltametria cíclica) foram feitas. As condições que geraram maior remoção de cor para o sistema apresentado foram NaCl 0,05 mol L −1 , 100 mA cm-2 , 35 ºC e pH 7, independente da concentração de corante para o eletrodo de Ti 0.25 Ru 0.75. Photoelectrodes were used to treat synthetic textile wastewater contaminated with indanthrene blue dye. Two media of treatment were used (NaCl and Na 2 SO 4), with variations on temperature, pH, current density, dye and chloride concentration. A modified Pechini method was applied to obtain Ti/Ru-based electrodes (Ti, Ru, Ti 0.5 Ru 0.5 , Ti 0.75 Ru 0.25 and Ti 0.25 Ru 0.75) containing anatase TiO 2 nanoparticles and a color degradation analysis was done. Physical (atomic force microscopy and X-ray diffractometry) and electrochemical characterizations (cyclic voltammetry) were considered. The condition that yielded highest color removal for the system presented 0.05 mol L −1 NaCl, 100 mA cm-2 , 35 °C and pH 7, independent of the dye concentration for the Ti 0.25 Ru 0.75 electrode.
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