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- Title
Sorption of Radiocaesium onto Powdered and Compacted Rectorite Studied by Batch and Capillary Methods.
- Authors
Lei Chen; Xianjin Yu
- Abstract
The sorption of radiocaesium onto Na-rectorite as a function of pH value under ambient conditions was studied by batch and capillary methods. The results indicated that the sorption of Cs+ ions was dependent on the ionic strength and, to a lesser extent, on the pH value. The distribution coefficients for Cs+ ion sorption onto powdered rectorite (as determined via the batch technique) were much higher than those of Cs+ ions onto compacted rectorite (as determined by capillary test), thereby suggesting that the sorption of Cs+ ions onto rectorite was strongly dependent on the density of rectorite, i.e. the interlaminary space of the compacted rectorite contributes significantly on Cs+ ion sorption. The distribution coefficients calculated from theoretical calculations, experimental measurements and the diffusion coefficients of Cs+ ions were compared and discussed in detail. The sorption and diffusion mechanisms in compacted rectorite were also discussed.
- Subjects
ABSORPTION; PHYSICAL &; theoretical chemistry; HYDROGEN-ion concentration; SEPARATION (Technology); ANALYTICAL chemistry; PROPERTIES of matter
- Publication
Adsorption Science & Technology, 2007, Vol 25, Issue 5, p285
- ISSN
0263-6174
- Publication type
Article
- DOI
10.1260/026361707783432542