COADSORPTION OF MONOVALENT AND MULTIVALENT IONS ON SILICA AND ALUMINA

Authors
KOSMULSKI M
Citation
M. Kosmulski, COADSORPTION OF MONOVALENT AND MULTIVALENT IONS ON SILICA AND ALUMINA, Berichte der Bunsengesellschaft fur Physikalische Chemie, 98(8), 1994, pp. 1062-1067
Citations number
18
Categorie Soggetti
Chemistry Physical
Journal title
Berichte der Bunsengesellschaft fur Physikalische Chemie
ISSN journal
00059021 → ACNP
Volume
98
Issue
8
Year of publication
1994
Pages
1062 - 1067
Database
ISI
SICI code
0005-9021(1994)98:8<1062:COMAMI>2.0.ZU;2-5
Abstract
Adsorption of calcium and europium from 0.001 - 1 M solutions of diffe rent 1:1 electrolytes on silica and alumina was studied as a function of pH, surface charge density sigma0, ionic strength and temperature. Adsorption of multivalent cations on a negatively charged surface is c ompetitive with respect to monovalent cations, i.e., the increase of t he ionic strength leads to a decrease of multivalent ions adsorption. In contrast, adsorption of multivalent cations on a positively charged surface is insensitive to the concentration of monovalent cations or even increases with the ionic strength.