Alteration of vitrified radioactive waste in low temperature natural environments: a natural analogue approach.

低温自然环境中玻璃化放射性废物的改变：自然模拟方法。

• 批准号: 2598164
• 金额: --
• 依托单位: University of Sheffield
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2021
• 资助国家: 英国
• 起止时间: 2021 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2598164
• 关键词: Alteration; vitrified; radioactive; waste; low

This project focuses on determining the long-term (>10,000 yrs) behavior of nuclear waste glass within a geological disposal facility. The project will utilize 'natural analogue experiments', where glasses have been exposed to natural environments with conditions of relevance to radioactive waste disposal for tens to hundreds of years. A key outcome will be to compare glass alteration in these complex low temperature environments, with alteration observed in high temperature, laboratory dissolution tests. The PhD will work towards a detailed mechanistic understanding of glass durability in complex environments taking into account of how groundwater composition, adjacent mineralogy and microbiology affect the glass corrosion process.

该项目的重点是确定核废料玻璃在地质处置设施内的长期（> 10，000年）行为。该项目将利用“自然模拟实验”，玻璃已经暴露在自然环境中，具有与放射性废物处理相关的条件数十至数百年。一个关键的结果将是比较玻璃在这些复杂的低温环境中的变化，在高温下观察到的变化，实验室溶解测试。博士将致力于在复杂环境中对玻璃耐久性的详细机械理解，同时考虑到地下水成分，邻近矿物学和微生物学如何影响玻璃腐蚀过程。