Abstract

Separation of ²⁴¹Am(III), ^152+154Eu(III), and ⁶⁰Co(II) radionuclides from nitric acid solutions by the batch method using KU-2, TRU, and Amberlite® IR-120(H) resins was studied. The separation factors (SFs) of radionuclides are affected by the HNO₃ concentration and resin type. In 3 M HNO₃, the SF of ^152+154Eu from ⁶⁰Co and ²⁴¹Am with the KU-2 resin was 628 and 26.48, respectively. In 0.01 M HNO₃, the SF of ²⁴¹Am from ⁶⁰Co with the TRU resin reached 83. All the resins used showed good radiation resistance and stability up to 100 kGy. Simulated nuclear liquid waste containing minor actinides (²⁴¹Am), lanthanides (^152+154Eu), fission products (¹³⁷Cs and ⁹⁹Mo), and activation products (⁶⁰Co) was successfully treated using column chromatography with the KU-2 resin. The radionuclides were stripped using 1.5 M aqueous HNO₃ with 70–82% degree of stripping in one stage. Thus, the KU-2 and TRU resins can be used for treatment of the high level corrosion products containing trivalent long-lived minor actinides (5d elements, e.g., Am and Cm), lanthanides (4f elements) and/or divalent heavy metals (3d elements), associated with a nuclear power plant.

中文翻译：

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离子交换树脂在模拟核酸性溶液中去除241 Am（III），152 + 154 Eu（III），99 Mo（VI），137 Cs（I）和60 Co（II）的性能

摘要

研究了使用KU-2，TRU和Amberlite®IR-120（H）树脂通过分批方法从硝酸溶液中分离出²⁴¹ Am（III），^{152 + 154} Eu（III）和⁶⁰ Co（II）放射性核素的方法。 。放射性核素的分离因子（SFs）受HNO ₃浓度和树脂类型的影响。在3 M HNO _3中，来自⁶⁰ Co和²⁴¹ Am的KU-2树脂的^{152 + 154} Eu的SF分别为628和26.48。在0.01 M HNO _3中，从⁶⁰到²⁴¹ Am的SF含TRU树脂的Co达到83。所有使用的树脂均显示出良好的抗辐射性和高达100 kGy的稳定性。使用KU-2树脂通过柱色谱法成功地处理了包含次act系元素（²⁴¹ Am），镧系元素（^{152 + 154} Eu），裂变产物（¹³⁷ Cs和⁹⁹ Mo）和活化产物（⁶⁰ Co）的模拟核废液。放射性核素使用1.5 M的HNO ₃水溶液进行汽提，汽提程度为70-82％。因此，KU-2和TRU树脂可用于处理含有三价长寿命次要act系元素（5 d元素，例如Am和Cm），镧系元素（4 f元素）和/或与核电厂有关的二价重金属（3 d元素）。