Experimental evidence of the contrasting reactivity of external vs. interlayer adsorption sites on swelling clay minerals: The case of Sr 2 -for-Ca 2 exchange in vermiculite

CARRIER ; VANDAMME ; PELLENQ ; BORNERT ; VAN DAMME ; ROBIN ; SARDINI ; REGNAULT ; DESCOSTES ; ZANOLLI ; DEAN ; ROOK ; BONDIOLI ; MAZURIER ; MACCHIARELLI ; RIEGLER ; ALLARD ; BEAUFORT ; CANTIN ; VON BARDELEBEN ; DZENE ; FERRAGE ; HUBERT ; DELVILLE ; TERTRE

Type de document
ARTICLE A COMITE DE LECTURE REPERTORIE DANS BDI (ACL)
Langue
anglais
Auteur
CARRIER ; VANDAMME ; PELLENQ ; BORNERT ; VAN DAMME ; ROBIN ; SARDINI ; REGNAULT ; DESCOSTES ; ZANOLLI ; DEAN ; ROOK ; BONDIOLI ; MAZURIER ; MACCHIARELLI ; RIEGLER ; ALLARD ; BEAUFORT ; CANTIN ; VON BARDELEBEN ; DZENE ; FERRAGE ; HUBERT ; DELVILLE ; TERTRE
Résumé / Abstract
The potential contrasting reactivity of external (edge and basal) and interlayer adsorption sites is studied by investigating the Sr2 +-for-Ca2 + exchange in three different size fractions (0.1-0.2, 1-2, and 10-20 ¼m) of vermiculite. For a given equivalent fraction of Sr2 + in solution, the obtained experimental adsorption isotherms showed that the equivalent fraction of adsorbed Sr2 + on the solid decreased with decreasing particle size
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