INVESTIGADORES
SAPAG Manuel Karim
artículos
Título:
Magnetic Particle Technology: A Simple Preparation of Magnetic Composites for the Adsorption of Contaminants in Water
Autor/es:
L.C.A. OLIVEIRA, R.M. LAGO, R.V.A. RÍOS, J.D. FABRIS, W.T. SOARES AND K. SAPAG
Revista:
JOURNAL OF CHEMICAL EDUCATION
Editorial:
American Chemical Society
Referencias:
Lugar: Madison, USA; Año: 2004 vol. 81 p. 248 - 250
ISSN:
0021-9584
Resumen:
In this article a simple undergraduate laboratory experiment to produce magnetic adsorbents is described. These magnetic materials efficiently adsorb contaminants from water and can be easily removed from the medium by a simple magnetic separation process. The magnetic composites can be prepared by a simple procedure based on the precipitation of magnetic iron oxides from Fe2+ and Fe3+ salts and NaOH on activated carbon or clay (two excellent adsorbents). The prepared materials can be used in various experiments such as: Harvesting the Magnetic Composite, Oil Spill Remediation, Adsorption of Metal Ions Contaminants onto Clay Composites, and Adsorption of Organic Contaminants onto Activated Carbon Composites. All these experiments illustrate several important general aspects in chemistry such as material science (clays, activated carbon, iron oxides, and magnetic materials), adsorption processes (adsorption isotherms, surface area, cation exchange, adsorption of organics, and metal ions), and environmental technology.
