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Effect of Chemical Formulations for Uranium Decontamination by Chemical Gels
Corresponding Author(s) : Chong-Hun Jung
Asian Journal of Chemistry,
Vol. 28 No. 6 (2016): Vol 28 Issue 6
Abstract
The decontamination and rheological behaviours of chemical gels prepared in a Ce(IV)-HNO3 or HNO3 based solution for tile surfaces contaminated with uranium radionuclides were investigated. Gelling agents were prepared by adding PEG-based non-ionic coviscosifiers into a stable pyro Si viscosifier. Dispersion of gelling agents in a Ce(IV)-HNO3 solution or HNO3 solution produces a chemical decontamination gel. The order of removal percentage of uranium with various co-viscosifiers was diethylene glycol hexyl ether (DGHE) > tripropylene glycol dodecyl ether (TPGDDE) > tripropylene glycol butyl ether (TPGBE).This is considered to be due to the difference in the length of hydrophobic alkyl chains of coviscosifier and initial activity level of contaminated specimens.
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- S. Faure, Innovative Processes for Nuclear Decontamination Solids, Exchange Meeting Between KAERI-CEA (2008).
- A. Purohit, M.D. Kaminski and L. Nunez, Method for the Decontamination of Metallic Surfaces, US Patent US6504077 B1 (2003).
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- W. Gaul, An Improved Polymer-Based Hydrogel for Decontamination of Hard Assets, Waste Management Conference, March 01 (2007).
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- A.L. Taboas, A.A. Moghissi and T.S. LaGuardia, The Decommissioning Handbook, ASME, pp. 4-22 (2004).
References
S. Faure, Innovative Processes for Nuclear Decontamination Solids, Exchange Meeting Between KAERI-CEA (2008).
A. Purohit, M.D. Kaminski and L. Nunez, Method for the Decontamination of Metallic Surfaces, US Patent US6504077 B1 (2003).
J.-P. Gauchon, J.-L. Alcaraz and L. Gallo, Gel Decontamination et Son Utilisation pour la Decontamination Radioactive de Surfaces FR-A-2656949 (1990).
W. Gaul, An Improved Polymer-Based Hydrogel for Decontamination of Hard Assets, Waste Management Conference, March 01 (2007).
G. Edgington, Decontamination of Nuclear Medicine Isotopes from Hard Surfaces using a Peelable Polymer-Based Hydrogel, HPS Annual Meeting, July 12 (2007).
A.L. Taboas, A.A. Moghissi and T.S. LaGuardia, The Decommissioning Handbook, ASME, pp. 4-22 (2004).