Behaviour of DGA and Ln resin with alpha radiation dose
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Rikard Malmbeck
Abstract
In this work the separation efficiency of the DGA and Ln extraction chromatographic resins has been investigated as a function of absorbed dose induced by alpha radiation. It was found that the resins show good stability towards alpha radiolysis, both maintaining high weight distribution ratios (and resin capacity factors) with the absorbed dose, calculated as if the complete alpha energy would be absorbed only in the resin material. However, the results obtained for Ln resin indicates that the method used in this work (extractive distribution ratio) to investigate alpha radiolytic behaviour is not appropriate. The reason is likely the strong acid dependency of this particular extraction system. The behaviour of the DGA resin towards alpha radiolysis was compared to alpha radiolysis in ordinary liquid-liquid extraction of an organic solvent based on the same extractant, TODGA, dissolved in n-dodecan. It was found that the alpha radiolysis rate of TODGA is about 5 times higher in liquid-liquid extraction where the complete energy of the alpha particle is deposited within the solvent, compared to the DGA resin. This indicates that in the heterogeneous DGA resin system, only 20% of the alpha energy is actually deposited to the organic solvent layered onto the particles of the DGA resin.
Acknowledgements
The authors wish to especially thank Adrian Nicholl (JRC-Karlsruhe) for his constant support before, during and after the experiments.
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Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
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Research funding: None declared.
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Conflict of interest statement: The authors declare no conflicts of interest regarding this article.
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© 2021 Walter de Gruyter GmbH, Berlin/Boston
Artikel in diesem Heft
- Frontmatter
- Original Papers
- Sorption behavior of natural uranium from aqueous solutions using modified activated carbon with quinoline
- Adsorption of UO2 2+ by AlBaNi-layered double hydroxide nano-particles: kinetic, isothermal, and thermodynamic studies
- Behaviour of DGA and Ln resin with alpha radiation dose
- Sintering Bi2O3–B2O3–ZnO ternary low temperature glass by hydration device to solidify iodine containing silver-coated silica gel
- Enhancement of the thermal and physicochemical properties of styrene butadiene rubber composite foam using nanoparticle fillers and electron beam radiation
- Co-transport of bentonite colloid and U(VI) in particulate granite column: role of colloid concentration, ionic strength, pH and flow rate
Artikel in diesem Heft
- Frontmatter
- Original Papers
- Sorption behavior of natural uranium from aqueous solutions using modified activated carbon with quinoline
- Adsorption of UO2 2+ by AlBaNi-layered double hydroxide nano-particles: kinetic, isothermal, and thermodynamic studies
- Behaviour of DGA and Ln resin with alpha radiation dose
- Sintering Bi2O3–B2O3–ZnO ternary low temperature glass by hydration device to solidify iodine containing silver-coated silica gel
- Enhancement of the thermal and physicochemical properties of styrene butadiene rubber composite foam using nanoparticle fillers and electron beam radiation
- Co-transport of bentonite colloid and U(VI) in particulate granite column: role of colloid concentration, ionic strength, pH and flow rate
