ベントナイトにおけるイオンの拡散の遅滞性に関する実験的検討およびメカニズムの究明

膨润土中离子扩散阻滞机理的实验研究和研究

• 批准号: 22K04320
• 负责人: 王 海龍
• 金额: $ 2.66万
• 依托单位: Waseda University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2022
• 资助国家: 日本
• 起止时间: 2022-04-01 至 2025-03-31
• 项目状态: 未结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22K04320/
• 关键词: Bentonite; radioactive waste; salt infiltration; Ion concentration; ベントナイト; 地層処分; 緩衝材; イオンの拡散; 水分拡散

The infiltration behaviors of salt solutions in the compacted bentonite are being studied, which help to understand the ions diffusion process in the buffer material for the high level radioactive waste disposal. In this study, NaCl and KCl solutions with 5 concentrations was used to infultrate into the compacted bentonite with different compaction dry density for 24 hours. It was found that as the increase in the concentration of the solution, as expected more cations idiffuse into the bentonite specimen. It was also found that the cation concentration in the pore water is not the same as that supplied outside.

研究了盐溶液在压实膨润土中的渗透行为，为了解高放废物处置缓冲材料中离子的扩散过程提供了理论依据。采用5种浓度的NaCl和KCl溶液对不同压实干密度的膨润土进行24 h的渗透试验。结果表明，随着溶液浓度的增加，膨润土样品中的阳离子扩散量增加。孔隙水中的阳离子浓度与外界供给的阳离子浓度不同。

项目成果

Experimental evaluation on the infiltration behavior of sodium ion into compacted K_V1 bentonite

钠离子对压实K_V1膨润土浸润行为的实验评价

• 发表时间: 2023
• 作者: Guodong CAI;Hailong WANG;Kunlin RUAN;Daichi ITO;Hideo KOMINE
• 通讯作者: Hideo KOMINE

Influence of different ion on the infiltration behavior of salt solution into compacted K_V1 bentonite

不同离子对盐溶液对压实K_V1膨润土渗透行为的影响

• 发表时间: 2023
• 作者: Guodong CAI;Hailong WANG;Kunlin RUAN;Daichi ITO;Hideo KOMINE
• 通讯作者: Hideo KOMINE