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在复杂的环境中,PFDS对Cs⁺被基甲烯基地质聚合物固定的影响

Shengjian Zhao¹, Hualong Yang¹, Xuehui Liu¹

¹Institute for Advanced Ceramics, School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, PR China; Key Laboratory of Advanced Structural-Functional Integration Materials & Green Manufacturing Technology, Harbin Institute of Technology, Harbin, PR China.

Journal of environmental management

|March 22, 2024

概括

改性地质聚合物在放射性废物处理中有效地固定 (Cs+),即使是与竞争性离子. perfluorodecyltriethoxysilane (PDFS) 处理阻断了水的扩散,在复杂的环境中显著减少了Cs+的浸出.

科学领域:

材料科学材料科学材料科学
环境科学环境科学
核工程核工程是指核工程.

背景情况:

与波特兰水泥相比,基于金属的地质聚合物为放射性废物处理提供了优越的 (Cs +) 固定性.
地质聚合物的性能受到Cs+在环境中子存在时的浸出易感的影响.

研究的目的:

在复杂的离子环境中增强地质聚合物的Cs+固定能力.
为了研究 perfluorodecyltriethoxysilane (PDFS) 修改在减少 Cs+ 漏中的有效性.

主要方法:

用 perfluorodecyltriethoxysilane (PDFS) 修改基于甲高的地质聚合物.
通过材料表征,系统地研究微观结构和化学结合.
评估Cs+在脱离离子和盐水中的可性.

主要成果:

通过PDFS的修改,在多个酸的存在下,显著降低了Cs+的浸出率.
脱离离子水中的可性指数达到11.0,缩盐水中的可性指数达到8.0.
微观结构和化学分析证实了PDFS的集成和阻断水的扩散.

结论:

perfluorodecyltriethoxysilane (PDFS) 是一种有效的修饰剂,可以改善地质聚合物 Cs+ 固定.
修改后的地质聚合物在具有挑战性的环境中对放射性废物处理的可靠性得到了提高.
这种方法提供了一种简单的方法来提高地质聚合物的性能,用于各种应用.

关键词:

水性水性水性泄漏行为泄漏行为.基于金属的地质聚合物.perfluorodecyltriethoxysilaneane 的使用情况

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