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

doi:10.1016/j.apsusc.2006.12.103

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

Sección de Química

Research output: Contribution to journal › Article › peer-review

82 Scopus citations

Abstract

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.

Original language	English
Pages (from-to)	5762-5766
Number of pages	5
Journal	Applied Surface Science
Volume	253
Issue number	13 SPEC. ISS.
DOIs	https://doi.org/10.1016/j.apsusc.2006.12.103
State	Published - 30 Apr 2007

Keywords

Adsorption
BET
Infrared spectroscopy
Montmorillonites
Nitrates
X-ray diffraction

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10.1016/j.apsusc.2006.12.103

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title = "Nitrate removal using natural clays modified by acid thermoactivation",

abstract = " 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.",

keywords = "Adsorption, BET, Infrared spectroscopy, Montmorillonites, Nitrates, X-ray diffraction",

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T1 - Nitrate removal using natural clays modified by acid thermoactivation

AU - Mena-Duran, C. J.

AU - Sun Kou, M. R.

AU - Lopez, T.

AU - Azamar-Barrios, J. A.

AU - Aguilar, D. H.

AU - Domínguez, M. I.

AU - Odriozola, J. A.

AU - Quintana, P.

PY - 2007/4/30

Y1 - 2007/4/30

N2 - 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.

AB - 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.

KW - Adsorption

KW - BET

KW - Infrared spectroscopy

KW - Montmorillonites

KW - Nitrates

KW - X-ray diffraction

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EP - 5766

JO - Applied Surface Science

JF - Applied Surface Science

IS - 13 SPEC. ISS.

ER -

Nitrate removal using natural clays modified by acid thermoactivation

Abstract

Keywords

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