基于氧化锰的颗粒吸附剂用于去除受放射性污染的天然水中的锶放射性核素

IF 1.5 3区化学 Q3 CHEMISTRY, ANALYTICAL

Journal of Radioanalytical and Nuclear Chemistry Pub Date : 2024-07-30 DOI:10.1007/s10967-024-09672-7

Oleg A. Kononenko, Vitaly V. Milyutin, Victor O. Kaptakov, Vadim I. Makarenkov, Evgeny A. Kozlitin

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引用次数: 0

摘要

合成了一种基于氧化锰的颗粒状吸附剂。一体积的吸附剂可将 125-145 体积的硬度水中的锶放射性核素净化至放射性本底值。合成过程包括 MnSO4 与 KMnO4 在[Mn2+]/[MnO4-] = 1.8 的水介质中相互作用，然后沉淀，沉淀物在 pH = 11 的条件下老化，并在 160 °C 煅烧。得到的吸附剂具有以下特点：放射性核素示踪剂 85Sr 在 0.01 mol dm-3 CaCl2 溶液中的分布系数为 1.6 × 104 cm3 g-1，Ca2+ 的批量容量为 1.10 mol g-1，Sr/Ca 对分离系数为 65。

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Manganese oxide-based granular sorbent for the removal of strontium radionuclides from radioactively contaminated natural water

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Manganese oxide-based granular sorbent for the removal of strontium radionuclides from radioactively contaminated natural water

A granular manganese oxide-based sorbent was synthesized. One volume of the sorbent decontaminates 125–145 volumes of hardness water from strontium radionuclides to background values of radioactivity. The synthesis includes interaction of MnSO₄ with KMnO₄ in aqueous medium at [Mn²⁺]/[MnO₄⁻] = 1.8, followed by the precipitation, aging the precipitate at pH = 11, and calcining it at 160 °C. Characteristics of the sorbent obtained were as follows: the distribution coefficient of the tracer ⁸⁵Sr radionuclide in 0.01 mol dm⁻³ CaCl₂ solution of 1.6 × 10⁴ cm³ g⁻¹, the batch capacity by Ca²⁺ of 1.10 mol g⁻¹, and the Sr/Ca pair separation coefficient of 65.

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来源期刊

Journal of Radioanalytical and Nuclear Chemistry 化学-分析化学

CiteScore

2.80

自引率

18.80%

发文量

504

审稿时长

2.2 months

期刊介绍： An international periodical publishing original papers, letters, review papers and short communications on nuclear chemistry. The subjects covered include: Nuclear chemistry, Radiochemistry, Radiation chemistry, Radiobiological chemistry, Environmental radiochemistry, Production and control of radioisotopes and labelled compounds, Nuclear power plant chemistry, Nuclear fuel chemistry, Radioanalytical chemistry, Radiation detection and measurement, Nuclear instrumentation and automation, etc.