Abstract
This study analyzed the effect of zeolites present during the ozonation of aqueous solutions containing the surfactant sodium dodecylbenzenesulfonate (SDBS). Two commercial zeolites and a basic zeolite synthesized in our laboratory were used to determine the role of these adsorbents as potential catalysts of ozone decomposition, investigating the influence of the textural and chemical properties of the zeolites on ozone and SDBS decomposition. Basic zeolites with large surface area and micropore volume showed superior SDBS oxidation outcomes. SDBS adsorption on zeolites is negligible during ozonation, and this enhanced SDBS oxidation derives from the generation of hydroxyl radicals by O 3/zeolite interaction. The hydrophobicity and acidity of zeolites proved to be negative factors for ozone decomposition, since they stabilize O 3 molecules in aqueous solution.
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