Impact of catalytic ozonation on the removal of a chelating agent and surfactants in aqueous solution

The present work consisted in the study of the oxidation Yield induced by c atalysts during ozonation of sodium gluconate, toluene sulfonic acid and Tr iton X100 in dilute aqueous solution (TOC = 8 mg C/L). Two operating condit ions have been used to demonstrate the enhancement brought about by catalyt ic ozonation: continuous filtration experiments and batch tests. Dynamic filtration experiments have been performed on catalysts previously saturated to simulate the behavior of the catalyst over a long period of us e. Batch experiments which allowed us to distinguish the part due to adsorptio n, ozonation and catalytic effect were carried out on three catalysts with intent to test their efficiency. (C) 1998 Published by Elsevier Science Ltd . All rights reserved.