Comparison in the extraction properties of Pu(IV) in piperidinium and pyrrolidinium nitrate anchored anion exchange resins
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B. Robert Selvan
,
M. P. Antony
Abstract
Piperidinium nitrate (Pip − NO3) and pyrrolidinium nitrate (Pyr − NO3) functional groups were anchored on a poly(styrene-divinylbenzene) matrix and evaluated the resultant anion exchange resin for the extraction of plutonium from nitric acid medium. The distribution coefficient (Kd, mL/g) of Pu(IV) in these resins increased with the concentration of nitric acid, reaching a maximum Kd at 7 M nitric acid, followed by decrease. The extraction of Pu(IV) increased with the duration of equilibration followed by the establishment of equilibrium, occurred within four hours of equilibration. The kinetic data were fitted with pseudo-first order and pseudo-second order rate equations. The apparent plutonium exchange capacity was determined to be ∼256 mg/g for Pip − NO3 resin and 285 mg/g for Pyr − NO3 resin at 7 M nitric acid. The radiolytic degradation of Pip − NO3 and Pyr − NO3 in presence of nitric acid (7 M) was studied upto a dose of 200 KGy and the results are reported in this paper.
©2015 Walter de Gruyter Berlin/Boston
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Articles in the same Issue
- Frontmatter
- Decomposition studies of group 6 hexacarbonyl complexes. Part 1: Production and decomposition of Mo(CO)6 and W(CO)6
- Electrochemical, computational and spectroscopic investigation on local environment of plutonium in ionic liquid and aqueous medium: a comparative study
- Comparison in the extraction properties of Pu(IV) in piperidinium and pyrrolidinium nitrate anchored anion exchange resins
- N,N-dialkyl-2-hydroxyacetamides for modifier-free separation of trivalent actinides from nitric acid medium
- The solubilities and solubility products of zirconium hydroxide and oxide after aging at 278, 313, and 333 K
- Studies on the separation of89Sr(II) from irradiated yttria target using 4, 4′(5′) di-tert-butyl-cyclohexano-18-crown-6 (DtBuCH18C6) by solvent extraction technique
- Preparation, characterization and thermal behavior of K2U4O13-Rb2U4O13 solid solutions
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