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酸功能化二氧化复合树脂,用于从模拟的高水平液体废物中选择性回收Ru

Junxiao Huang¹, Shunyan Ning¹, Lifeng Chen¹

¹School of Nuclear Science and Technology, University of South China, Hengyang 421001, PR China; Key Laboratory of Advanced Nuclear Energy Design and Safety, Ministry of Education, University of South China, Hengyang 421001, PR China.

Environmental research

|January 4, 2026

概括

一种新型的烯酸功能化二氧化复合树脂 (AA/SiO2) 有效地将从高水平液体废物中分离出来. 这种选择性树脂为回收和推进核燃料循环提供了可持续的解决方案.

科学领域:

材料科学材料科学材料科学
核化学核化学核化学
分离科学分离科学

背景情况:

从高水平液体废物 (HLLW) 中回收 (Ru) 对资源利用和核燃料循环的进步至关重要.
在Ru分离的挑战包括复杂的物种化,放射性和HLLW中的竞争性离子.
现有的方法往往缺乏实际应用所需的选择性和效率.

研究的目的:

开发一种选择性和高效的吸附剂,用于从模拟的HLLW中分离 (Ru) (III).
研究开发材料的吸附机制,动力学,热力学和选择性.
评估吸附剂的可重复使用性,以实现可持续的回收.

主要方法:

通过in-situ聚合合成,合成酸功能化化合物树脂 (AA/SiO2).
使用模拟的HLLW进行吸附实验,以确定容量,动力学 (伪二级) 和异温 (Langmuir).
使用12个共存离子的选择性测试和5个循环的可重复使用性测试,使用化 (NaNO2) 化剂.
使用里埃变换红外光谱学 (FT-IR) 和X射线光电子光谱学 (XPS) 进行了表征.

主要成果:

在最佳条件下,AA/SiO2的最大吸附能力为94.49 mg Ru/g (0.5 M HNO3, 348 K).
吸附跟随伪二次动力学和兰迈尔异热,表明自发的,内热的,单层化学吸附.
在对12个共存离子 (SF(Ru/Other) = 132.2,SF(Ru/Pd) = 47.3) 实现了Ru(III) 的高选择性.
FT-IR和XPS证实通过与[RuNO]3+复合体的基组进行离子交换.
树脂在5个循环中保持了稳定的可重复使用性,容量损失最小 (3.77 mg Ru/g).

结论:

AA/SiO2是一种具有成本效益,高度选择性和强大的树脂,用于从HLLW中可持续地回收Ru.
开发的材料有助于在核废物管理中推进金组金属的分离科学.
这项工作为解决资源短缺和改善核燃料循环可持续性提供了一个有希望的解决方案.

关键词:

亚克力酸功能化树脂的功能化树脂.高级液态废物 (HLLW) 是指高级液态废物.离子交换离子交换恢复恢复恢复恢复恢复鲁丁是一种.

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