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Effect of amino acid (glycine) on the distribution of transition metal (Co-Ni-Zn-Cu) and magnesium divalent ions between silicate gels and aqueous solutions: an experimental study

Published online by Cambridge University Press:  09 July 2018

M. Dabira ,
F. Delbove ,
A. Perruchot  and
J. Trichet
M. Dabira
Affiliation:
Centre de Recherches sur la Synthèse et la Chimie des Minèraux GIS/CNRS-BRGM, 1A rue de la Férollerie, 45071 Orldans Cedex 02, France
F. Delbove
Affiliation:
Centre de Recherches sur la Synthèse et la Chimie des Minèraux GIS/CNRS-BRGM, 1A rue de la Férollerie, 45071 Orldans Cedex 02, France
A. Perruchot
Affiliation:
Centre de Recherches sur la Synthèse et la Chimie des Minèraux GIS/CNRS-BRGM, 1A rue de la Férollerie, 45071 Orldans Cedex 02, France
J. Trichet
Affiliation:
Centre de Recherches sur la Synthèse et la Chimie des Minèraux GIS/CNRS-BRGM, 1A rue de la Férollerie, 45071 Orldans Cedex 02, France
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Abstarct

The study of M and Mg ion exchange (M = Co, Ni, Cu, Zn), between silicate gels SiO2.q(M, Mg)O.nH2O and amino acid (glycine) saline aqueous solutions (M, Mg)SO4, shows that the introduction of the complexing agent completely upsets the original distribution equilibria of M and Mg between the two types of phases. The values of the measured bulk distribution coefficient

are lowered considerably relative to the inorganic reference distribution coefficients. The lowering of D may be accounted for by calculating the contents of the different species, MA, MA+, M2+, under which the metallic element M is present in the solutions. The values of

resulting from the calculated M2+ contents are identical to the values of Dref, determined in systems without a complexing agent.

Type
Research Article
Information
Clay Minerals , Volume 23 , Issue 1 , March 1988 , pp. 45 - 54
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1988

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