FLUORESCENT BRIGHTENER-28 REMOVAL BY OZONATION OR ADVANCED OXIDATION PROCESSES (O3 H2O2)/

The aim of this work is to study the reaction of ozone and combined oz one/hydrogen peroxide mixtures with the fluorescent brightener 28 in d ilute aqueous solution using controlled experimental conditions. The k inetics were also evaluated under various experimental conditions. The main ozonation by-products have been identified by High Pressure Anio nic Exchange Chromatography (HPAEC) and Gas Chromatography coupled wit h Mass Spectrometry (GC-MS) techniques and a reaction pathway is propo sed. In order to confirm this mechanism, melamine and s-triazine have been treated under the same reaction conditions and their decompositio n pathways were studied.