(A) study on the sorption and diffusion phenomena of an ion in compacted bentonite backfill material = 압축된 벤토나이트 되메움재에서의 이온의 수착 및 확산현상에 관한 연구

There sorption models such as Kd-concept linear, ion-exchange, and adsorption models are presented and a nonlinear diffusion equation which includes a surface diffusion is derived. A semi-analytical method is used to solve the derived nonlinear difusion equation. The effects of sorption during a transient release period on the diffusion rate of an ion are found to be insignificant when surface diffusion is included. However, the effects of surface diffusion are found to be significant. Therefore, surface diffusion must be considered in order to estimate the performance of a compacted bentonite backfill material more precisely. As a system factor, $\alpha_0$ whose properties are similar to the apparent diffusivity is included in the nonlinear diffusion equation and it is highly dependent on Dp/Ds. The results of calculation obtained by the semi-analytical method are fairly consistent with existing experimental data presented by other authors.
Advisors
Chun, Moon-Hyunresearcher전문헌researcher
Publisher
한국과학기술원
Issue Date
1990
Identifier
67567/325007 / 000881198
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 핵공학과, 1990.2, [ v, 67 p. ]

URI
http://hdl.handle.net/10203/49234
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=67567&flag=t
Appears in Collection
NE-Theses_Master(석사논문)
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