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开创了NTA-合树脂方法,用于从高度酸性介质中进行序列式Th (IV) 捕获

Kesheng Hu¹, Yaowen Zhang¹, Lipeng Han¹

¹School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, P. R. China.

ACS applied materials & interfaces

|November 15, 2025

概括

一种新的固体相提取树脂有效地从高水平放射性液体废物中分离了微量. 这种强大而有选择性的树脂具有很高的容量,对于先进的核废物管理和资源循环利用至关重要.

科学领域:

核化学核化学核化学
材料科学材料科学材料科学
放射化学放射化学是指辐射化学.

背景情况:

高水平的放射性液体废物 (HLW) 给的回收带来了挑战,原因是复杂矩阵中的微量度.
选择性分离对于核废物管理和潜在的资源循环利用至关重要.

研究的目的:

开发和表征一种新的固相提取树脂,用于高效的 (IV) 分离.
在模拟的HLW条件下评估树脂的性能,选择性和稳定性.

主要方法:

在乙烯-双乙烯支架上固定甲酸 (NTA 胺基 (C8)).
使用SEM,BET,FT-IR和XPS进行表征.
批量和动态列研究以评估吸收动力学,容量,选择性和稳定性.

主要成果:

树脂表现出快速的Th(IV) 吸收动力学和高容量 (32.0 mg/g 在0.01 M HNO3,73.3 mg/g 在7 M HNO3).
对竞争性离子表现出极好的选择性,在暴露于恶劣条件 (10 M HNO3,800 kGy辐射,多个循环) 后保持超过90%的性能.
动态柱体测试显示突破体积为~180毫升,动态容量为12.8毫克/克.

结论:

开发的树脂在选择性地从HLW分离Th(IV) 方面非常有效.
它的稳定性,高容量和选择性为减少放射性毒性和在核废物管理中实现资源回收提供了有希望的解决方案.

关键词:

在 NTA 氨基酸中含有 NTA 胺基.吸附吸附是一种吸附.高酸性介质的高度酸性介质.是多的一种物质.

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