Radiolytic stability of di-2-ethylhexyl-dioctyl diglycolamide
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Abstract
The radiation stability of an unsymmetrical diglycolamide, di-2-ethylhexyl-di-octyl diglycolamide (DEHDODGA) has been evaluated under various process conditions. The influence of diluent (n-dodecane), phase modifier (N,N-dihexyl octanamide, DHOA), and nitric acid on the radiolysis of DEHDODGA was investigated. The distribution ratio (D) of Am(III), Eu(III), and Sr(II) in the irradiated solvent was determined as a function of absorbed dose of γ-radiation. The distribution ratios decreased with increase of absorbed dose, indicating the radiolytic degradation of DEHDODGA with increase of absorbed dose. The stripping behavior of Am(III) from the degraded organic phase was studied. Quantitative back extraction of trivalent metal ions from the irradiated organic phase was achieved in a single contact using the stripping formulation composed of dilute nitric acid and citric acid. Our studies indicated the robust nature of DEHDODGA with respect to radiolysis, and innocuous nature of degradation products.
©2014 Walter de Gruyter Berlin/Boston
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Articles in the same Issue
- Frontmatter
- Characterization of neutrons from a thick target 9Be(p, n) reaction by multiple foil activation technique for practical applications: measurement of integral cross sections and their comparison with integrated data from data files
- Americium dioxocations in solid: crystal structures and absorption spectra of the new complexes [AmVO2(dipy)OOCCH3(H2O)] and Cs2[(AmVIO2)2(SO4)3]
- Influence of the redox state on the neptunium sorption under alkaline conditions: Batch sorption studies on titanium dioxide and calcium silicate hydrates
- Sorption of metal cations on suspended bentonite: effects of pH, ionic strength and complexing anions
- Speciation of bioaccumulated uranium(VI) by Euglena mutabilis cells obtained by laser fluorescence spectroscopy
- Adsorption of arsenic from aqueous media using lateritic minerals: Equilibrium, kinetic and thermodynamic studies
- Separation of 90Nb from zirconium target for application in immuno-PET
- Erbium-169 labeled hydroxyapatite particulates for use in radiation synovectomy of digital joints – a preliminary investigation
- Radiolytic stability of di-2-ethylhexyl-dioctyl diglycolamide
- Thermal behaviour of hafnium diethylenetriaminepentaacetate studied using the Perturbed Angular Correlation Technique
