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组六价乙化物从兰坦化物分离,使用 bismuthate 色谱

Samantha A Labb¹, Kelly N Kmak², John D Despotopulos²

¹Department of Environmental and Radiological Health Sciences, Colorado State University, 1618 Campus Delivery, Fort Collins, CO, 94550 USA; Nuclear and Chemical Sciences Division, Lawrence Livermore National Laboratory, 7000 East Ave., Livermore, CA, 94550, USA.

Journal of chromatography. A

|September 28, 2024

概括

在核燃料再加工过程中, bismuthate 能有效地将乙化物从化物分离出来. 这种固体氧化剂和离子交换器为先进的核废物管理提供了快速有效的方法.

科学领域:

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

背景情况:

由于复杂的放射化学过程,先进的核燃料再加工面临着将活性化物 (An) 与化物 (Ln) 分离的挑战.
六价氧化状态的活性化物 (到) 提供了选择性分离组的潜在途径,从三价和.
现有的方法需要复杂的工程和分离,限制核废物管理的效率.

研究的目的:

扩大对二甲酸盐 (NaBiO3) 染色体的应用,以进行乙化物/兰化物分离.
使用NaBiO3.3来描述 (U), (Pu) 和欧 (Eu) 的吸附,运动和化行为.
评估基于NaBiO3的分离在核再加工中的潜力,特别是在TRUEX过程之后.

主要方法:

利用柱状色谱,使用甲 (NaBiO3) 作为固体氧化剂和离子交换器.
在稀释的酸溶液中研究了从兰化物 (Eu) 中氧化和分离的活性化物 (U,Pu).
标志着目标元素和关键裂变产物的吸附,运动和化行为.

主要成果:

实现了定量氧化和分离从兰化物中的活性化物.
观察到高分离因子 (超过200) 与U,Pu和Am从Eu和Cm的快速动力学.
在不到一个小时的时间内,证明了完全的动因化物/兰桑化物分离.
描述了关键裂变产品的行为,表明与现有再加工流的兼容性.

结论:

bismuthate 染色法提供了一种有效和快速的方法,用于将乙化物从化物分离出来.
这种技术显示出改善先进核燃料再加工策略的巨大潜力.
基于NaBiO3的分离是核废物管理和再加工应用的有希望的进步.

关键词:

动因化物动因化物动因化物染色体学染色体学是一种染色学.裂变产品是一种裂变产品.兰他化物兰他化物二甲酸盐的使用方法

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