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Surface Complexation Modeling of Yb(III) and Cs(I) Sorption on Silica

✍ Scribed by Nicolas Marmier; Annie Delisée; Francine Fromage

Publisher
Elsevier Science
Year
1999
Tongue
English
Weight
90 KB
Volume
212
Category
Article
ISSN
0021-9797

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✦ Synopsis

A surface complexation model is used to describe sorption of ytterbium and cesium on the silica surface. The constant capacitance model gives the description of the solid-solution interface chosen for this work. The first step in the modeling consists of extracting the surface acidity constants. The result is: The second step consists of the extraction of surface complexation constants for both ytterbium and cesium. The sorption of the cations is represented as follows: for the ytterbium sorption, for the cesium sorption, In the case of cesium, the sorption of sodium is competitive and has to be considered: Copyright 1999 Academic Press.

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