Uranium Sorption on “Tezontle” Volcanic Rock

Authors

  • Beatriz Eugenia López Muñoz Instituto Nacional de Investigaciones Nucleares
  • Juana María Durán Blanco Instituto Nacional de Investigaciones Nucleares
  • José Luis Iturbe García Instituto Nacional de Investigaciones Nucleares
  • María Teresa Olguín Gutiérrez Instituto Nacional de Investigaciones Nucleares

DOI:

https://doi.org/10.29356/jmcs.v53i4.977

Keywords:

Uranium, Sorption, Tezontle, Electrophoresis

Abstract

It is described a study that demonstrates that hexavalent uranium ions were sorbed by the naturally occurring mineral using a batch technique. This mineral is found in abundant quantities in Mexico. Our study focused on the separation of UVI from synthetic aqueous systems of both H2O-UO2(NO3)2.6H2O (acid) and H2ONa4[ UO2(CO3)3] (basic). The chemical speciation was performed by using high voltage electrophoresis, and the uranium content was determined by UV-Vis Spectroscopy. The quantified U(VI) sorption by tezontle from acidic and basic systems was 2.72 and 1.68 μmol/g, respectively, and the sorption behavior is discussed considering the surface charge of the tezontle at different pH values based on the point of zero charge characteristic of this material.

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Author Biographies

Beatriz Eugenia López Muñoz, Instituto Nacional de Investigaciones Nucleares

Departamento de Química

Juana María Durán Blanco, Instituto Nacional de Investigaciones Nucleares

Departamento de Química

José Luis Iturbe García, Instituto Nacional de Investigaciones Nucleares

Departamento de Química

María Teresa Olguín Gutiérrez, Instituto Nacional de Investigaciones Nucleares

Departamento de Química

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Published

2019-06-19

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