Journal
JOURNAL OF NUCLEAR MATERIALS
Volume 453, Issue 1-3, Pages 82-90Publisher
ELSEVIER
DOI: 10.1016/j.jnucmat.2014.06.028
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Magnetic carboxymethylcellulose (CMC/Fe3O4) was used as a framework adsorption material to remove uranium ions from aqueous solutions. Carboxyl functional groups were grafted onto the CMC/Fe3O4. The maximum adsorption capacity of the magnetic composite toward U(VI) was 122.48 mg/g. Kinetic and thermodynamic parameters of the adsorption process were estimated. The pseudo-second-order model was more suitable and it proved to be an endothermic and spontaneous process. The Langmuir and Freundlich models were applied to evaluate the adsorption isotherm. The data matched well with Langmuir model after equilibrium was reached and with Freundlich model before equilibrium was reached. (C) 2014 Elsevier B.V. All rights reserved.
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