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PREPARATION OF IRON/CARBON MATERIAL FROM BIODIESEL WASTE FOR APPLICATION IN THE REMOVAL OF ORGANIC CONTAMINANTS. In this work, iron/carbon-based catalysts obtained from biodiesel residues, glycerin, were prepared. The composites were prepared by thermal carbonization of the glycerin polymer, from biodiesel residues, in the presence of iron salt. The materials obtained were characterized by adsorption/desorption of N2, scanning electron microscopy (SEM), X-ray diffraction (XRD), Raman spectroscopy and thermogravimetric analysis. XRD analysis have shown the presence of hematite and magnetite. The methylene blue (MB) adsorption and oxidation tests reached 99% color removal in the presence of hydrogen peroxide. The steadystate spectra confirmed the MB oxidation by the reduction of the fluorescence intensity. Besides, it has high stability, with no active phase leaching, proving a heterogeneous oxidation process.

PREPARAÇÃO DE MATERIAL A BASE DE FERRO/CARVÃO A PARTIR DE RESÍDUO DO BIODIESEL PARA APLICAÇÃO NA REMOÇÃO DE CONTAMINANTES ORGÂNICOS