Influence de Quelques Paramètres Opératoires Sur l'Oxydation du Phénol par le Peroxyde d'Hydrogène en Présence D'une Zéolithe Fe-ZSM-5 Dependency on some Operating Parameters During Wet Oxidation of Phenol by Hydrogen Peroxide with Fe-ZSM-5 Zeolite

Wastewater originating in the chemical process industries contain high concentrations of organics that must be treated before discharge. Phenol is one of the most important of these pollutants because it is toxic, even at low concentrations. Recently, hydrogen peroxide treatment has emerged as a viable alternative oxidation technique for treatment. It does not form any harmful or intrusive by-products and it is an ecologically clean and non-toxic chemical. However, the methods for treatment of wastewater with hydrogen peroxide are based mostly on homogeneous catalysis by metal ions inducing additional pollution. From this, it was anticipated that the use of heterogeneous catalysis would be a good alternative, thus opening up a new field of investigation. Previous studies, based on screening tests, evidenced the catalytic activity of an MFI zeolite Fe-ZSM-5 for phenol elimination by H2O2. The oxidation tests are carried out in a batch mode, using a stirred glass reactor. The influence of pH, temperature an...