한국광물학회지 (Journal of the Mineralogical Society of Korea)
- 제11권2호
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- Pages.106-116
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- 1998
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- 1225-309X(pISSN)
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- 2288-7172(eISSN)
캐올리나이트의 셰슘-137 및 스트론튬-90 흡착에 대한 삼중층 표면복합반응 모델링: 지하수 이온성분 및 pH의 영향
Triple-layer Surface Complexation Modeling on the Adsorption of cs-137 and Sr-90 onto Kaolinite: Effect of Groundwater Ions and pH
초록
The adsorption of Cs-137 and Sr-90 onto kaolinite in prescence of major groundwater cations (Ca2+, K+, Na+) with different concentrations was simulated by using triple-layer surface complexation model (TL-SCM). The site density (8.73 sites/nm2) of kaolinite used for TL-SCM was calculated from it's CEC and specific surface area. TL-SCM modeling results indicate that concentrations dependence on 137Cs and 90Sr adsorption onto kaolinite as a function of pH is best modeled as an outer-sphere surface reaction. This suggests that Cs+ and Sr2+ are adsorbed at the
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