Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018WR024218 |
Coupling Radioactive Waste Glass Dissolution Measurements in Generic Groundwaters With Reactive Transport Modeling of Repository Scenarios | |
Iwalewa, T. M.1,2; Farnan, I.1 | |
2019-10-15 | |
发表期刊 | WATER RESOURCES RESEARCH |
ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2019 |
文章类型 | Article;Early Access |
语种 | 英语 |
国家 | England; USA |
英文摘要 | The reliable simulation of radionuclide migration away from the near field of a geological repository for safety analyses requires a fundamental understanding of processes in the near field. We focus this study on investigating the behavior of UK MW25 waste glass (a nonradioactive simulant of U.K. Magnox glass) and other near-field components in a geological repository over long periods of time. The approach used involved a two-step process: waste glass dissolution measurements and modeling in potential repository groundwaters, and reactive transport simulation of radionuclide release and transport in the near field. The Stage 1 rate of MW25 measured in lower-strength-sedimentary-rock groundwater was found to be slightly higher than that measured in higher-strength-rock groundwater. Experimental results show the critical role of groundwater chemistry on waste glass dissolution kinetics. Reactive transport model parameterization was accomplished by coupling direct laboratory measurements and literature data with transport processes. The results revealed that Se-79, Tc-99, and Np-237 are the radionuclides that will have the greatest impact on the environment at long times. The performance assessment results show that the improvement afforded by the addition of a copper canister in the waste package, as opposed to having only a steel canister, is marginal and higher strength rock would be a more effective barrier at long time than lower strength sedimentary rock in terms of restricting the transport of the radionuclides. Our model provides deep insights into the contribution of waste glass durability and other near-field components in the containment and retardation of radionuclide transport. |
英文关键词 | radioactive waste glass dissolution rate groundwater reactive transport model radionuclide geological repository |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000490026200001 |
WOS关键词 | HIGH-LEVEL WASTE ; NUCLEAR-WASTE ; TEMPERATURE-DEPENDENCE ; BOROSILICATE GLASSES ; GEOLOGICAL DISPOSAL ; RATES ; TERM ; PH ; PERFORMANCE ; BEHAVIOR |
WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/187676 |
专题 | 资源环境科学 |
作者单位 | 1.Univ Cambridge, Dept Earth Sci, Cambridge, England; 2.Harvard Univ, John A Paulson Sch Engn & Appl Sci, Cambridge, MA 02138 USA |
推荐引用方式 GB/T 7714 | Iwalewa, T. M.,Farnan, I.. Coupling Radioactive Waste Glass Dissolution Measurements in Generic Groundwaters With Reactive Transport Modeling of Repository Scenarios[J]. WATER RESOURCES RESEARCH,2019. |
APA | Iwalewa, T. M.,&Farnan, I..(2019).Coupling Radioactive Waste Glass Dissolution Measurements in Generic Groundwaters With Reactive Transport Modeling of Repository Scenarios.WATER RESOURCES RESEARCH. |
MLA | Iwalewa, T. M.,et al."Coupling Radioactive Waste Glass Dissolution Measurements in Generic Groundwaters With Reactive Transport Modeling of Repository Scenarios".WATER RESOURCES RESEARCH (2019). |
条目包含的文件 | 条目无相关文件。 |
个性服务 |
推荐该条目 |
保存到收藏夹 |
查看访问统计 |
导出为Endnote文件 |
谷歌学术 |
谷歌学术中相似的文章 |
[Iwalewa, T. M.]的文章 |
[Farnan, I.]的文章 |
百度学术 |
百度学术中相似的文章 |
[Iwalewa, T. M.]的文章 |
[Farnan, I.]的文章 |
必应学术 |
必应学术中相似的文章 |
[Iwalewa, T. M.]的文章 |
[Farnan, I.]的文章 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论