Remoção de compostos orgânicos em água empregando carvão ativado impregnado com óxido de ferro: ação combinada de adsorção e oxidação em presença de H2O2 Removal of organic compounds from water by activated carbon impregnated with iron oxide: combined action of adsorption and oxidation in the presence of H2O2

• Main Authors: Cínthia S. Castro, Mário C. Guerreiro, Luiz C. A. Oliveira, Maraísa Gonçalves
• Format: Article
• Language: English
• Published: Sociedade Brasileira de Química 2009-01-01
• Series: Química Nova
• Subjects: oxidation; adsorption; iron oxide
• Online Access: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422009000600039

<abstract language="eng">In this work, composites based on activated carbon/iron oxide (AC/Fe) were prepared in two different proportions (AC/Fe 5/1 and 1/1) and evaluated in the removal of the organic dye methylene blue (MB). Physical-chemical properties of the composites were determined by X-ray diffraction (XRD), adsorption/dessorption of N2 isotherm, temperature programmed reduction (TPR) and scanning electron microscopy (SEM). Results showed that goethite (&#945;- FeOOH), with nanometer particle size, was formed over carbon surface for both composites. These materials showed high efficiency to remove MB from solution by combined adsorption and oxidation process. The AC/Fe 1/1 showed to be more active in (MB) oxidation then AC/Fe 5/1.