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Sorption of Caesium on Commercial Magnetite with low Silica Content: Experimental and Modelling

Published online by Cambridge University Press:  01 February 2011

Miquel Rovira ,
Joan de Pablo ,
Ignasi Casas ,
Javier Giménez  and
Frederic Clarens
Miquel Rovira
Affiliation:
Centre Tecnològic de Manresa, Technical University of Catalonia, Av. Bases Manresa 1, 08240 Manresa, Spain Chemical Engineering Department, Technical University of Catalonia, 08028 Barcelona, Spain
Joan de Pablo
Affiliation:
Centre Tecnològic de Manresa, Technical University of Catalonia, Av. Bases Manresa 1, 08240 Manresa, Spain Chemical Engineering Department, Technical University of Catalonia, 08028 Barcelona, Spain
Ignasi Casas
Affiliation:
Chemical Engineering Department, Technical University of Catalonia, 08028 Barcelona, Spain
Javier Giménez
Affiliation:
Chemical Engineering Department, Technical University of Catalonia, 08028 Barcelona, Spain
Frederic Clarens
Affiliation:
Chemical Engineering Department, Technical University of Catalonia, 08028 Barcelona, Spain
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Abstract

Interaction of Cs on commercial magnetite has been studied under different experimental conditions at high solid/liquid ratios. At pH 8.2 the Freundlich isotherm was able to describe an important range of the experimental data and at high Cs concentration surface precipitation was found likely to occur. Special attention has been given to silica, present in the system as an impurity of magnetite, since it plays an important role on the sorption mechanism in which a ternary complex magnetite-Si-Cs is formed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 807: Symposium Scientific Basis for Nuclear Waste Management XXVII , 2003 , 677
Copyright
Copyright © Materials Research Society 2004

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References

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