Effect of Elevated Temperatures on the Dehydration of Radioactive Cement-Based Waste Forms Including Iron Hydroxide Slurries Containing α-Emitters

IF 0.9 Q4 CHEMISTRY, INORGANIC & NUCLEAR

Radiochemistry Pub Date : 2025-02-17 DOI:10.1134/S106636222406016X

V. A. Remizova, P. A. Bobrov

引用次数: 0

Abstract

The mechanical strength and chemical stability of the radioactive cement waste forms obtained by solidification of iron hydroxide slurries containing α-emitters were assessed with the aim to evaluate the effect of elevated temperatures in the range from 150 to 250°С. The dehydration of the waste forms in this temperature range exerts no significant negative effect on the extent of fixation of the radionuclides in the matrices and on the strength characteristics of the waste forms. The water loss on heating to 150°C is 11–13%, and further heating to 250°С leads to no more than 10% additional water loss.

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高温对含α-排放物的含氢氧化铁的放射性水泥基废物脱水的影响

对含α-发射体的氢氧化铁浆料固化得到的放射性废水泥形态的机械强度和化学稳定性进行了评价，目的是评价在150 ~ 250°С范围内升高温度的影响。在这个温度范围内，废物形态的脱水对放射性核素在基质中的固定程度和废物形态的强度特性没有显著的负面影响。加热到150℃时的失水率为11-13%，再加热到250℃С时的额外失水率不超过10%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Radiochemistry CHEMISTRY, INORGANIC & NUCLEAR-

CiteScore

1.30

自引率

33.30%

发文量

期刊介绍： Radiochemistry is a journal that covers the theoretical and applied aspects of radiochemistry, including basic nuclear physical properties of radionuclides; chemistry of radioactive elements and their compounds; the occurrence and behavior of natural and artificial radionuclides in the environment; nuclear fuel cycle; radiochemical analysis methods and devices; production and isolation of radionuclides, synthesis of labeled compounds, new applications of radioactive tracers; radiochemical aspects of nuclear medicine; radiation chemistry and after-effects of nuclear transformations.