Journal ArticleDOI
EXTRACTION OF Am FROM NITRIC ACID BY CARBAMOYL-PHOSPHORYL EXTRACTANTS: THE INFLUENCE OF SUBSTITUENTS ON THE SELECTIVITY OF Am OVER Fe AND SELECTED FISSION PRODUCTS
TLDR
A number of neutral extractants containing the P(0)(CH2)nC(0)N raolety were evaluated for their ability to extract Am from nitric acid and their selectivity for Am over Fe and selected fission products as discussed by the authors.Abstract:
A number of neutral extractants containing the P(0)(CH2)nC(0)N raolety were evaluated for their ability to extract Am from nitric acid and their selectivity for Am over Fe and selected fission products. Extractants containing alkoxy, alkyl, and aryl substltuents were evaluated. Tetrachloroethylene was used as a diluent. Fission products selected for study were Y, Zr, Mo, Tc, Ru, Rh, Pd, La, Ce, Pr, Nd, Sra, and Eu. The conclusions drawn were that the most efficient and selective Am extractant contains a single carbon bridging group, one or two phenyl groups attached to the phosphorus atom and l9obutyl groups attached to the amide nitrogen.read more
Citations
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Journal ArticleDOI
Separation and preconcentration of uranium from acidic media by extraction chromatography
E. Philip Horwitz,Mark L. Dietz,Renato Chiarizia,Herbert Diamond,Alice M. Essling,Donald G. Graczyk +5 more
TL;DR: In this paper, the effect of macro levels of selected elements on the sorption of actinide ions by a novel extraction chromatographic resin comprised of a solution of octyl(phenyl)-N,N-diisobutylcarbamoylmethylphosphine oxide in tri-n-butyl phosphate supported on an inert polymeric substrate is described.
Journal ArticleDOI
Actinide partitioning—a review
TL;DR: In this paper, a review of the state-of-the-art reagents and methods for hydrometallurgical partitioning of actinides from different types of transuranium wastes and dissolved fuels is presented.
Journal ArticleDOI
N,N,N′,N′‐Tetraoctyl Diglycolamide (TODGA): A Promising Extractant for Actinide‐Partitioning from High‐Level Waste (HLW)
Seraj A. Ansari,Priyanath Pathak,V. K. Manchanda,M. Husain,Ashok K. Prasad,Virinder S. Parmar +5 more
TL;DR: In this article, the authors evaluated TODGA as an extractant for the partitioning of minor actinides from simulated high level nuclear waste solutions and found that TODGA molecules display a tendency toward aggregation in n−dodecane at lower acidities.
Journal ArticleDOI
The Truex Process and the Management of Liquid Tru Uwaste
W. W. Schulz,E. P. Horwitz +1 more
TL;DR: The TRUEX (TRansUranium Extraction) process is a new generic actinide extraction/recovery process for the removal of all actinides from acidic nitrate and chloride nuclear waste solutions as discussed by the authors.
Journal ArticleDOI
Ligands for f-element extraction used in the nuclear fuel cycle
TL;DR: It appears that small modifications of the structure of the ligand, the pre-organising platform or the solvent can have significant impact on the extraction (and separation) of metal ions.
References
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Journal ArticleDOI
THE TRUEX PROCESS - A PROCESS FOR THE EXTRACTION OF THE TKANSURANIC ELEMENTS EROM NITRIC AC In WASTES UTILIZING MODIFIED PUREX SOLVENT*
TL;DR: A generic transurantc (TRU) element extraction/recovery process was developed based on the use of octyl(phenyl)-N,N-diiso-butylcarbamoylmetliylphosphine oxide, 0φD(iB)CMPO, dissolved in PUREX process solvent (tribntyl phosphate, TBP, in normal paraffluic hydrocarbon, NPH) as mentioned in this paper.
Journal ArticleDOI
Selected Alkyl(phenyl)-N,N-dialkylcarbamoylmethylphosphine Oxides as Extractants for Am(III) from Nitric Acid Media
TL;DR: In this paper, neutral bifunctional extractants, alkyl(phenyl)-N,N-dialkyl carbamoylmethylphosphine oxides, have been prepared and studied as extractants for Am(III) from nitric acid media.
Journal ArticleDOI
THE EXTRACTION OF Am(III) FROM NITRIC ACID BY OCTYL(PHENYL)-N,N-DIISOBUTYLCARBAMOYLMETHYLPHOSPHINE OXIDE - TRI-n-BUTYL PHOSPHATE MIXTURES
E. Philip Horwitz,D. G. Kalina +1 more
TL;DR: In this article, TBP was used as a phase modifier to improve the performance of Am(III) from nitric acid using OOD[IB]CMPO and tributylphosphate.
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