Ozonation of a Chelating Agent and Surfactant in Aqueous Solution : Changes Induced by the Presence of a Catalyst

摘要

The present work consisted in the study of the oxidation yield induced by catalysts during ozonation of sodium gluconate and toluene sulfonic acid in dilute aqueous solution (TOC ≈10 mg C/L). Two operating conditions have been used to demonstrate the enhancement brought about by catalytic ozonation : batch tests and continuous filtration experiments. Batch experiments carried out on three catalysts allowed to distinguish the part due to adsorption, ozonation and catalytic effect. Dynamic filtration experiments have been performed on catalysts previously saturated to simulate the behavior of the catalyst over a long period of use.