{"title":"基于COMSOL的核素Sr和Cs在综合缓冲/回填材料中的迁移行为模拟","authors":"Duan Tian, Zhe Wang, Jiaqian Zhang, Ying Luo, Zhenlong Zhang, Chao Li, Kai Ye, Chaoliang Peng, Yiming Chen, Wenxue Lin, Jingyan Zhang","doi":"10.1007/s10967-025-10036-y","DOIUrl":null,"url":null,"abstract":"<div><p>This study examines attapulgite-bentonite-pyrite (AB<sub>7</sub>Fe) and zeolite-bentonite-pyrite (ZB<sub>7</sub>Fe) mixtures as buffer and backfill materials for nuclide migration using soil column experiments and COMSOL modeling. The results indicated that ZB<sub>7</sub>Fe possessed higher adsorption capacities for cesium (Cs) and strontium (Sr) compared to AB<sub>7</sub>Fe. Conversely, AB<sub>7</sub>Fe demonstrated superior retardation performance, more effectively slowing nuclide migration. After 1000 years, Cs and Sr concentrations in AB<sub>7</sub>Fe surpassed those in ZB<sub>7</sub>Fe. Additionally, nuclide migration increased with higher initiation pressure, dispersion, and diffusion coefficients. This research is crucial for improving the long-term safety of nuclear waste repositories.</p></div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"334 4","pages":"2767 - 2782"},"PeriodicalIF":1.5000,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Simulation of the migration behavior of nuclides Sr and Cs in integrated buffer/backfill materials based on COMSOL\",\"authors\":\"Duan Tian, Zhe Wang, Jiaqian Zhang, Ying Luo, Zhenlong Zhang, Chao Li, Kai Ye, Chaoliang Peng, Yiming Chen, Wenxue Lin, Jingyan Zhang\",\"doi\":\"10.1007/s10967-025-10036-y\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>This study examines attapulgite-bentonite-pyrite (AB<sub>7</sub>Fe) and zeolite-bentonite-pyrite (ZB<sub>7</sub>Fe) mixtures as buffer and backfill materials for nuclide migration using soil column experiments and COMSOL modeling. The results indicated that ZB<sub>7</sub>Fe possessed higher adsorption capacities for cesium (Cs) and strontium (Sr) compared to AB<sub>7</sub>Fe. Conversely, AB<sub>7</sub>Fe demonstrated superior retardation performance, more effectively slowing nuclide migration. After 1000 years, Cs and Sr concentrations in AB<sub>7</sub>Fe surpassed those in ZB<sub>7</sub>Fe. Additionally, nuclide migration increased with higher initiation pressure, dispersion, and diffusion coefficients. This research is crucial for improving the long-term safety of nuclear waste repositories.</p></div>\",\"PeriodicalId\":661,\"journal\":{\"name\":\"Journal of Radioanalytical and Nuclear Chemistry\",\"volume\":\"334 4\",\"pages\":\"2767 - 2782\"},\"PeriodicalIF\":1.5000,\"publicationDate\":\"2025-03-07\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Radioanalytical and Nuclear Chemistry\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s10967-025-10036-y\",\"RegionNum\":3,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"CHEMISTRY, ANALYTICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Radioanalytical and Nuclear Chemistry","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1007/s10967-025-10036-y","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, ANALYTICAL","Score":null,"Total":0}
Simulation of the migration behavior of nuclides Sr and Cs in integrated buffer/backfill materials based on COMSOL
This study examines attapulgite-bentonite-pyrite (AB7Fe) and zeolite-bentonite-pyrite (ZB7Fe) mixtures as buffer and backfill materials for nuclide migration using soil column experiments and COMSOL modeling. The results indicated that ZB7Fe possessed higher adsorption capacities for cesium (Cs) and strontium (Sr) compared to AB7Fe. Conversely, AB7Fe demonstrated superior retardation performance, more effectively slowing nuclide migration. After 1000 years, Cs and Sr concentrations in AB7Fe surpassed those in ZB7Fe. Additionally, nuclide migration increased with higher initiation pressure, dispersion, and diffusion coefficients. This research is crucial for improving the long-term safety of nuclear waste repositories.
期刊介绍:
An international periodical publishing original papers, letters, review papers and short communications on nuclear chemistry. The subjects covered include: Nuclear chemistry, Radiochemistry, Radiation chemistry, Radiobiological chemistry, Environmental radiochemistry, Production and control of radioisotopes and labelled compounds, Nuclear power plant chemistry, Nuclear fuel chemistry, Radioanalytical chemistry, Radiation detection and measurement, Nuclear instrumentation and automation, etc.