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ISSN : 1738-1894(Print)
ISSN : 2288-5471(Online)
Journal of Nuclear Fuel Cycle and Waste Technology Vol.9 No.1 pp.33-40
DOI :

Ag2O를 첨가한 압축 벤토나이트에 대한 요오드 이온의 확산 특성 관찰

An Investigation of Diffusion of Iodide Ion in Compacted Bentonite Containing Ag2O

Sung Paal Yim, Ji Hyun Lee, Heui-Joo Choi, Jong-Won Choi, Cheo Kyung Lee

Abstract

In the compacted bentonite containing Ag2O, the transport of iodide ion was investigated by Through-diffusion method. It is confirmed that Iodide ion is transported by diffusion process in the compacted bentonite containing Ag2O as well as in the compacted bentonite without Ag2O. However, the lag-time of iodide ion in the compacted bentonite containing Ag2O is larger than that in the compacted bentonite without Ag2O. The increase of the lag-time was observed in pure iodide ion solution and also in 0.1M NaCl-iodide ion solution. The apparent diffusion coefficient of iodide ion in the compacted bentonite containing Ag2O has lower value than that in the compacted bentonite without Ag2O. The effect of Ag2O on the effective diffusion coefficient was not clearly investigated in the compacted bentonite containing Ag2O while the values of effective diffusion coefficient of iodide ion in the compacted bentonite without Ag2O obtained in this study were similar to those in the compacted bentonite reported in the literature.
압축 벤토나이트, 관통 확산법, 요오드 이온, 초기 누출 시간, 겉보기 확산 계수, 유효 확산 계수, Compacted bentonite, Through-diffusion method, Iodide ion, Time-lag, Apparent diffusion coefficient, Effective diffusion coefficient

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