Nitrate removal using natural clays modified by acid thermoactivation

C. J. Mena-Duran, M. R. Sun Kou, T. Lopez, J. A. Azamar-Barrios, D. H. Aguilar, M. I. Domínguez, J. A. Odriozola, P. Quintana

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79 Citas (Scopus)

Resumen

Groundwater pollution by nitrates is a widespread problem in many locations in the world. The underground aquatic mantle of the Peninsula of Yucatan is highly vulnerable due to its karstic nature. Adsorption methods are a good choice for nitrate elimination. In this work, a natural calcium bentonite was modified by acid thermoactivation with HCl and H 2 SO 4 , and tested as a media for nitrate removal in an aqueous solution. The nitrate concentration in the solution was measured by FT-IR, using the Lambert-Beer law. Clay characterization was carried out by X-ray diffraction and FT-IR spectroscopy; surface area was measured by the BET method.

Idioma originalInglés
Páginas (desde-hasta)5762-5766
Número de páginas5
PublicaciónApplied Surface Science
Volumen253
N.º13 SPEC. ISS.
DOI
EstadoPublicada - 30 abr. 2007

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