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Nitrate removal using natural clays modified by acid thermoactivation

AuthorsMena-Durán, C. J.; Sun Kou, M. R.; López, T.; Azamar-Barrios, J. A.; Aguilar, D. H.; Domínguez, M. I. ; Odriozola, José Antonio
Infrared spectroscopy
X-ray diffraction
Issue Date5-Jan-2007
CitationApplied Surface Science 253(13): 5762-5766 (2007)
AbstractGroundwater 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 H2SO4, 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.
Description5 pages, 5 figures.-- PACS nrs.: 61.10.Nz; 78.30.Hv; 81.20.Ka.-- Printed version published on Apr 30, 2007.
Issue title: Sixth International Symposium on Effects of surface heterogeneity in adsorption and catalysis on solids - ISSHAC-VI (Zakopane, Poland, Aug 28-Sep 2, 2006).
Publisher version (URL)http://dx.doi.org/10.1016/j.apsusc.2006.12.103
Appears in Collections:(ICMS) Artículos
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