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Influence of the regeneration method of irradiated mixture “30% TBP in Isopar-M” on the lower temperature limit of flame propagation
When a circulating extraction mixture of 30% TBP in Isopar-M, saturated with 3.4 mol L −1 nitric acid, is irradiated with a dose of up to 2000 kGy,...
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Influence of Isopar-M on Radiation and Thermal Degradation of Tri-n-Butyl Phosphate in Solutions
AbstractThe post-radiation (dose 1 MGy) thermal and hydrolytic stability of 30 vol % tributyl phosphate solutions in Isopar-M at 90–170°C in contact...
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Contribution of nitric acid and alcohol to the radiolytic degradation of TODGA in Isopar-M
Radiolytic transformations of TODGA (N,N,N',N'-tetra-n-octylamide of diglycolic acid) in Isopar-M significantly depend both on the addition of...
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Thermal stability of the extraction system “TODGA in Isopar M with n-decanol” at above atmospheric pressure
The gas evolution dynamics has been studied during thermal oxidation of 0.15 and 0.2 mol L −1 solutions of N , N , N ′, N ’-tetra-n-octyldiglycolamide...
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The effect of aliphatic alcohol additives on the radiolytic degradation of TODGA in Isopar-M
The radiolysis of solutions of TODGA (N,N,N′,N′-tetra-n-octylamide of diglycolic acid) in mixtures of Isopar-M (iso-paraffins C 13 –C 14 ) with n-nonanol...
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Substantiation of the Practical Feasibility of the Modified Scheme of Purex Process with an Increased TBP Concentration Using Mathematical Modeling
AbstractIn order to expand the existing database on the extraction of SNF components, experimental data were obtained on the extraction of nitric...
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Effect of Irradiation of the Extraction Mixture with 30% TBP in ISOPAR-M on the Lower Temperature Limit of Flame Propagation
AbstractIrradiation with accelerated electrons of an extraction mixture of 30% TBP in Isopar-M isoparaffin diluent on the lower temperature limit of...
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Mathematical Model of the Semi-Batch Countercurrent Extraction Separation of Lutetium and Ytterbium and Its Verification with Model Solutions
AbstractA mathematical model for the lutetium and ytterbium extraction separation was developed. Optimization calculations were performed for two...
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Separation of Ytterbium and Lutetium with Solutions of (2-Ethylhexyl)phosphonic Acid Mono-2-ethylhexyl Ester in Hydrocarbons from Nitric Acid Solutions and Its Simulation
AbstractRecovery of lutetium and ytterbium with solutions of 2-ethylhexylphosphonic acid mono-2-ethylhexyl ester in isopar-M and m -nitrobenzotrifluor...
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Partitioning of the High Level Radioactive Waste from the Purex Process by 40% TBF in Isoparaffin Using Magnesium Nitrate as a Salting-out Agent
AbstractCentrifugal contactor rig trials of the partitioning flowsheet were carried out using simulated and real high level waste solutions obtained...
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Recovery of Americium from Actinide-Lanthanide Fraction of High-Level Waste during Its Transfer to the Oxidation State Am(V)
AbstractThe conditions for the oxidation of Am(III) to Am(VI) and its reduction to Am(V) are shown, and the stability of these forms in a 0.1 M...
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Study of the products of radiation and thermal destruction in the extraction system of 30 vol% TBP–Isopar-M–HNO3
The composition of the products of radiation and radiation-thermal destruction of the PUREX extraction organic phase of 30 vol% TBP in the Isopar-M...
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Direct and Indirect Effects of an Electron Beam on N,N,N',N'-Tetra-n-Octyl Diglycolamide in Hydrocarbon–Alcohol Solutions
AbstractThe radiolysis of a radiochemical extraction system based on N,N,N',N' -tetra- n -octyl diglycolamide (TODGA) dissolved (0.15–0.2 M) in a...
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Development and Verification of a Scheme for Fractionation of HAWs with TODGA Extractive Agent in a “Light” Diluent
AbstractThe technology of fractionation of trans -plutonium elements (TPEs) and REEs with the use of 0.15 M TODGA (tetraoctylamide of diglycolic...
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Comparison of Dynamic Tests of the Modified Purex Process Flowsheet Using 30 and 45% TBF in Isoparaffin
AbstractResults of centrifugal contactor rig trials of the flowsheet of the first solvent extraction cycle in protective glove boxes using simulated...
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Effect of vaporization on thermal stability of model PUREX-process raffinates
The aqueous phase formed during the regeneration of the irradiated extractant contains organic products that degrade into gases upon heating and...
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Thermal and Radiation Stability of Extractive Mixtures Based on Todga
AbstractThe method of differential scanning calorimetry has been used to study the thermal stability of unirradiated and irradiated extractive...
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Technology for Reprocessing Mother–Wash Solution after Crystallization Purification of Spent Nuclear Fuel from High Temperature Gas-Cooled Reactor
AbstractThe extractants diphenyl- N,N -dioctylcarbamoylmethylphosphine oxide and diphenyl- N,N -diisobutylcarbamoylmethylphosphine oxide for the SNF...
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Protective Effects in the Radiolysis of Acidified Hydrocarbon Solutions of Tributyl Phosphate
AbstractThe effect of radiolysis and postradiation acid hydrolysis on the composition of the degradation products of tributyl phosphate (TBP, 30 wt...
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Separation of Americium and Curium in Nitric Acid Solutions via Oxidation of Am(III) by Bismuthate and Perxenate Ions
AbstractStudies have been carried out in order to develop new ways to separate Am and Cm in nitrate solutions. It was shown that Am(VI) produced by...
