The tendency towards equalization of the 234U/238U isotopic activity ratios in fractions of U(IV) and U(VI) during thermal annealing of metamict polycrase

Hosseinpour Khanmiri, Mohammad; Bogdanov, Roman V.; Titov, Anatoly V.; Fomin, Edward V.; Samadfam, Mohammad; Outokesh, Mohammad

doi:10.1016/j.apgeochem.2023.105881

Cited by 3 publications

(1 citation statement)

References 22 publications

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“…The immobilization of high-level radioactive waste (HLW) materials is thought to be the most important step in the final phase of radioactive waste management technology ( Ewing et al, 2004 ; Weber et al, 2009 ; Ojovan and Lee, 2011 ; McCloy and Goel, 2017 ; Hosseinpour Khanmiri and Bogdanov, 2018 ; Hosseinpour Khanmiri et al, 2018 ; Rahman and Saleh, 2018 ; Hyatt and Ojovan, 2019 ; Ojovan and Yudintsev, 2023 ; Hosseinpour Khanmiri et al, 2024 ). Most of the available data is related to the development of materials for the long-term storage or disposal of high-level nuclear waste materials, either from the reprocessing of spent commercial reactor fuels or from a number of defense reprocessing operations.…”

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confidence: 99%

Investigation of the leaching behavior of Na and Si in simulated HLW borosilicate glass obtained from the waste of a 1000 MWe class PWR reactor: using the response surface method

Hosseinpour Khanmiri,

Yadollahi,

Samadfam

et al. 2024

Front. Chem.

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The immobilization of high-level nuclear waste (HLW) in glass waste matrices provides the key safety function of slowing down radionuclide emissions from an underground disposal site. This study examines the leaching behavior of two major elements, Na and Si, in HLW borosilicate glass simulated from waste of a 1000 MWe class pressurized water reactor (PWR) using response surface methodology and Box-Behnken Design. The design of the experiment was carried out considering three independent variables: the pH of the solution, the contact time, and the leaching temperature, leading to 17 leaching runs performed using the static product consistency test (PCT). The results of statistical analysis (ANOVA: analysis of variance) indicated that the effects of the individual variables and the interactions between them were statistically significant, and the relative consistency of the data further confirmed the model’s applicability. Data obtained from the PCT experiments revealed that the leaching behavior of Na and Si in the evaluated waste glass exhibited similar behavior to previously researched glasses for each condition tested.

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Section: Introductionmentioning

confidence: 99%

Investigation of the leaching behavior of Na and Si in simulated HLW borosilicate glass obtained from the waste of a 1000 MWe class PWR reactor: using the response surface method

Hosseinpour Khanmiri,

Yadollahi,

Samadfam

et al. 2024

Front. Chem.

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Quantum Chemical Study of the Electronic Structure of Ytterbium Halides

Khadeeva,

Shakhova,

Lomachuk

et al. 2024

Moscow Univ. Chem. Bull.

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Quantum Chemical Study of the Electronic Structure of Ytterbium Halides

KHADEEVA,

SHAKHOVA,

LOMACHUK

et al. 2024

Lomonosov Chemistry Journal

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The study of ytterbium halide crystals using the compound-tunable embedding potential (CTEP) method is carried out in the framework of the density functional theory. For subsequent calculations using the coupled-cluster methods, the optimization of atomic bases is carried out, and for this purpose stochiometric molecular systems were studied. The chemical shift of the lines of the X-ray emission spectrum, Kα1 and Kα2, in YbHal3 relative to YbHal2 was chosen as a criterion for verifying the computational accuracy of the properties localized on the nucleus of a heavy atom, Yb, since this method is a unique tool for analyzing partial electron densities near a heavy nucleus speci cally for compounds of d- and f-elements. In the study, ve main versions for the halogen basis set sizes were considered. The stability of the results was obtained using the CCSD and CCSD(T) coupled cluster methods for molecular systems YbF2, YbF3, YbCl2, YbCl3.

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The tendency towards equalization of the 234U/238U isotopic activity ratios in fractions of U(IV) and U(VI) during thermal annealing of metamict polycrase

Cited by 3 publications

References 22 publications

Investigation of the leaching behavior of Na and Si in simulated HLW borosilicate glass obtained from the waste of a 1000 MWe class PWR reactor: using the response surface method

Investigation of the leaching behavior of Na and Si in simulated HLW borosilicate glass obtained from the waste of a 1000 MWe class PWR reactor: using the response surface method

Quantum Chemical Study of the Electronic Structure of Ytterbium Halides

Quantum Chemical Study of the Electronic Structure of Ytterbium Halides

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