Resumo

PERGHER, Sibele B. C.; OLIVEIRA, Luiz C. A.; SMANIOTTO, Alessandra  e  PETKOWICZ, Diego I.. Magnetic zeolites for removal of metals in water. Quím. Nova [online]. 2005, vol.28, n.5, pp. 751-755. ISSN 0100-4042.  http://dx.doi.org/10.1590/S0100-40422005000500003.

In this work the adsorption features of zeolites (NaY, Beta, Mordenite and ZSM-5) have been combined with the magnetic properties of iron oxides in a composite to produce a magnetic adsorbent. These magnetic composites can be used as adsorbents for contaminants in water and subsequently removed from the medium by a simple magnetic process. The magnetic zeolites were characterized by XRD, magnetization measurements, chemical analyses, N₂ adsorption isotherms and Mössbauer spectroscopy. These magnetic adsorbents show remarkable adsorption capacity for metal ion contaminants in water.

Palavras-chave : zeolite [iron oxide composite]; magnetic adsorbents; metallic contaminants.