Hydrogeochemistry for radioactive waste management

放射性废物管理的水文地球化学

• 批准号: 477852-2014
• 负责人: Al, Tom
• 金额: $ 23.96万
• 依托单位: University of Ottawa
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2018
• 资助国家: 加拿大
• 起止时间: 2018-01-01 至 2019-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=643647
• 关键词: Hydrogeochemistry; radioactive; waste; management

Safe, clean energy with a low carbon footprint is of critical importance to the national economy and the well-being of citizens. Nuclear power can make a significant contribution to meeting this goal but the issue of waste management must be addressed. This research program focuses on geoscience in relation to safe management of Canadian radioactive waste in a deep geological repository. Waste isolation in the geosphere requires geologic systems with low permeability rocks such that groundwater does not flow and transport of solutes derived from the waste is dominated by diffusion. The research will develop and apply methods to evaluate solute transport in diffusion dominated geologic systems, thereby assisting with characterization of candidate sites for a repository. The research will require a laboratory experimental component and a component that utilizes samples from field sites to study porewater chemistry, particularly naturally-occurring solute tracers to assess the mechanisms and time scale for porewater and solute movement in the surrounding geosphere. One of the most important goals is that the research program be conducted with the aim of integrating all data into an overall geoscientific model that is well constrained by data - an approach commonly referred to as geosynthesis. This provides a means of effectively communicating the results of the research.**This research program will help the university strengthen its educational and research efforts in Environmental Sciences and it will provide students and postdocs with the skills and knowledge necessary for them to assist with the safe management of radioactive waste into the future. This program holds great importance to Canadians as it will contribute to the establishment of a deep geological repository for used nuclear fuel.**

碳足迹低的安全，清洁能源对国民经济和公民的福祉至关重要。核电可以为实现这一目标做出重大贡献，但必须解决废物管理问题。该研究计划的重点是与深层地质存储库中加拿大放射性废物的安全管理有关的地球科学。 地质中的废物隔离需要具有低渗透率岩石的地质系统，以使地下水不流动和源自废物的溶质的运输是由扩散所主导的。该研究将开发和应用方法来评估以扩散为主地质系统中的溶质传输，从而有助于对存储库的候选地点进行表征。这项研究将需要实验室实验组件和一个利用来自现场的样品的组件来研究孔隙水化学，尤其是自然存在的溶质示踪剂，以评估周围地质层中孔隙水和溶质运动的机制和时间尺度。最重要的目标之一是进行研究计划的目的是将所有数据整合到一个受数据良好约束的整体地球科学模型中，该方法通常称为地质合成。 这提供了一种有效传达研究结果的手段。 该计划对加拿大人非常重要，因为它将有助于建立一个二手核燃料的深层地质存储库。**