EFFECT OF pH ON THE ELECTROCHEMICAL OXIDATION OF PHENOL USING A DIMENSIONALLY STABLE ANODE OF SnO2-Sb2O5-RuO2

 

G.C. López-Ojeda, Ma. R. Gutiérrez-Lara, A. Durán-Moreno

 

 

  • Manufacture of an anode dimensionalmente stable of SnO2-Sb2O5-RuO2 for his employment in the anode oxidation of synthetic solutions of phenol.

  • The treated concentrations of phenol of 100, 300, 500 and 1000 mg/L to values of pH about 2, 7 and 12.

  • The mechanism of oxidation was a function of the pH, by means of the generation of oxidizers derived from the chlorine to use(be in use) NaCl as electrolyte support and the generation of radical hidroxilo for the electrolysis of the water.

  • The percentages of removal were bigger than 90 % measured in terms of decrease of phenol, of 80 % for the chemical demand of oxygen and of 70 % in the organic total carbon.

  • In the experiments realized with the concentration of phenol of 1000 mg/L, in acid conditions, was observed the effect of polymerization of the by-products of the oxidation of the phenol.