The existing technologies for the production, separation, and purification of 63Ni, as well as methods for the deposition of nickel coatings to fabricate a betavoltaic nuclear battery have been reviewed. A new integrated closed loop flowsheet for the production of highly enriched 63Ni and deposition of 63Ni coatings using a single reagent, phosphorus trifluoride (PF3), in all...
Conditions were determined for preparing a suspension of detonation synthesis nanodiamonds (NDs) with immobilized scandium in solutions, meeting the requirements to solutions for intravenous administration of radiopharmaceuticals based on the medicinal isotopes 44Sc and 47Sc. The possibility of the quantitative binding of scandium with ND samples in isotonic solutions having the...
The work investigated the sorption of no-carrier-added 177Lu isolated from neutron-irradiated 176Yb2O3, and carrier-added 177Lu obtained by irradiation of natLu2O3, by commercial and oxidized nanodiamonds (NDs) of various grades from aqueous solutions to identify among them a promising carrier for further research in the field of nuclear medicine. A promising sorbent was found...
The paper presents the results of testing the purification of real liquid radioactive waste from radionuclides, bottom residues of the Kola and Beloyarsk nuclear power plants (NPP), as well as low-level wastewater from the radiochemical building of the Institute of Physical Chemistry and Electrochemistry RAS (IPCE RAS) using the method of nanofiltration (NF) using a polymer...
An optimized synthesis method for 6-[18F]fluoropiperonal (6-[18F]FP) via nucleophilic substitution of the nitro group in the precursor molecule (nitropiperonal, 6-NP) with [18F]fluoride in the presence of tetrabutylammonium tosylate has been proposed. Using this weakly basic phase transfer catalyst, the amount of initial 6-NP in the reaction was reduced from 4.0 to 0.2 mg with...
The influence of various factors on the efficiency of introducing deuterium into 3-(N-pyrrolyl)-propanoyl-L-histidine and 3-(N-salicyl)-propanoyl-L-histidine was studied. Heavy water was used as a source of deuterium. It is shown that the content of deuterium atoms in the substance can be increased by pretreating the reaction mixture with deuterium gas. The new approach opens up...
A simple sublimation technology for the lutetium and ytterbium separation was proposed, which already at the stage of preliminary experiments showed effectiveness: (a) the completeness of Yb separation resulted in short-term thermal annealing is at least 98%, the distilled product is completely free from 177Lu, no additional preparation of ytterbium for repeated irradiation is...
The main prerequisites for creating and developing industrial radiochemical production in the USSR and the Russian Federation is reviewed. The history of spent nuclear fuel (SNF) management in relation to the RT-1 and RT-2 plants, the features and tasks of the plants are considered from the position of today. Current specifics of the platforms of the Mayak Production Association...
The efficiency of voloxidation of mixed nitride uranium–plutonium spent nuclear fuel (MNUP SNF) for the separation of the fuel composition from the fuel rod cladding and removal of 3H and 14C was estimated. It was shown that the completeness of SNF separation from fuel rod cladding under optimal conditions is at the level of 98–99%. The residual content of tritium in the...
Titanates and zirconates of light rare earth elements (REE): REE2TiO5, REE2Ti2O7, REE4Ti9O24, and REE2Zr2O7, are of interest as matrices for isolating the REE actinide fraction of high-level waste from the reprocessing of irradiated nuclear fuel. Data on the incorporation of impurities (Zr, U, Ca) into Nd and La titanates are examined. They display limited isomorphism toward...
The sorption of uranium and thorium fluorides by activated carbon from the eutectic was studied. The sorption isotherms of both fluorides at a temperature of 650°C have a pronounced convex character and are described by the Langmuir equation. Experiments were carried out on the sorption of protactinium by activated carbon AG-3 at 650°С from a melt of alkali metal fluorides LiF...
A method of iodine-125 deposition on a surface of microsource silver supports for brachytherapy of prostate cancer was reported, which includes preparing the support surface by sequentially treating them with nitric acid and thiourea solutions, followed by chlorination of the support surface with a chlorinating agent to form silver chloride on the support surface, and...
The removal of platinoids (Pd, Rh, and Ru) from irradiated fuel the yield of which is kilograms per ton is a complex problem due to a number of technological and economic reasons. The paper proposes ways of a phased approach to the introduction of technology for the recovery of platinum-group metals (PGM) at one of the radiochemical enterprises. Information is presented on the...