頁籤選單縮合
題名 | Cation Exchange Capacity of Rocks Mineral Fillings=岩石與礦物填料的離子交換能力研究 |
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作者 | 郭志謙; 郭世忠; Kuo, Michael; Kuo, Shih-chung; |
期刊 | 黃埔學報 |
出版日期 | 20000600 |
卷期 | 39 2000.06[民89.06] |
頁次 | 頁373-394 |
分類號 | 341.3723 |
語文 | eng |
關鍵詞 | 岩石; 礦物填料; 離子交換; |
英文摘要 | AECL have made a proposal for the burial of Canada's nuclear waste in the granite rock of the Canadian Shield. A very important component of this proposal is to be able to understand the ability of rock to remove the radionuclides from the groundwater if radioactive materials were to enter water when the disposal vault leaks. The aims are to find the influences of surface area on Cation Exchange Capacity (CEC) and determine if altered rocks have a different ECE than unaltered rocks. For that, five samples of unfractured rocks, fractured rocks, and one unaltered grey granite have been analyzed for their CEC to gain a further understanding of how ion exchange could occur underground, the basic ideas of which could be applied to radionuclides. Two ion-exchange of leaching procedures (CH3COONH4 and KCI leachings) were used to determine CEC and these gave reasonable results. Ca2+ is the principal ion exchanged in three of the six samples. Also, the results show that the surface area does not affect CEC too much, whereas mineral infillings in the rocks seem to have a great influence on CEC. These CEC results may be suitable for use in modeling the ion exchange for other investigations in the future. |
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