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Separation Features of TPE and REE by Complex Displacement Chromatography from Highly Active Solutions Formed after SNF Processingстатья
- Авторы: Kharitonov O.V., Firsova L.A.
- Журнал: Radiochemistry
- Том: 64
- Номер: 6
- Год издания: 2022
- Издательство: Pleiades Publishing, Inc.
- Местоположение издательства: New York, USA
- Первая страница: 721
- Последняя страница: 727
- Оригинальные версии: Особенности выделения ТПЭ и РЗЭ методом вытеснительной комплексообразовательной хроматографии из высокоактивных растворов, образующихся после переработки ОЯТ
- DOI: 10.1134/S106636222206008X
- Аннотация: —Radiation loads and compositions of solid phases are calculated during the separation of TPE and REE from solutions generated in the course of SNF reprocessing. Sorption from weakly concentrated solutions under the action of high radiation loads in the upper part of the sorption column leads to the sorbent decomposition, up to 30% of its original capacity. The hydroxide forms of iron, chromium, aluminum and nickel pass from the solid to the liquid phase and generate gel-like precipitates under the action of high radiation loads, which block the sorption column. During elution, aluminum is washed out in the TPE region and forms a protonated complex with diethylenetriaminepentaacetic acid (DTPA), which precipitates at room temperature. This precipitate in the unheated connecting lines of the plant can bring about blocking of the separation columns.
- Добавил в систему: Фирсова Любовь Александровна