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A comparative study on sorption and diffusion of Cs in crushed argillite and granite investigated in batch and through-diffusion experiment

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Abstract

The batch and through-diffusion experiments in this study were conducted and compared in order to investigate the sorption and diffusion of cesium (Cs) for two potential host rocks in Taiwan: argillite from Taitung and granite from Kinmen Island, with the purpose of establishing a reliable safety-performance assessment methodology for the final disposal of low level radioactive waste. The results of Cs mapping by scanning electron microscope equipping by energy dispersive spectrometer (SEM–EDS) showed that the distribution of Cs on argillite and granite were enriched in illite and biotite, respectively. In addition, it showed that higher sorption capacities were found for argillite than granite; due to the clay mineral content (illite) in the argillite. Experiments for diffusion of Cs is agreement to the values estimated for the diffusive results (D a) of Cs in argillite were revealed to be lower than those of granite.

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Acknowledgments

This work was mainly supported by the Ministry of Education, Taiwan, R.O.C. under the NCKU Aim for the Top University Project Promoting Academic Excellence and Developing World Class Research Centers. The experimental section of this study was supported by the Ministry of Science and Technology (MOST, Taiwan) under contract numbers 103-2221-E-006-227 and 105-2914-I-006-004-A1 and the Atomic Energy Council (AEC, Taiwan) through a 2015 mutual fund program project under contract number 104-NU-E-006-002-NU.

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Correspondence to Shih-Chin Tsai.

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Lee, CP., Tsai, SC., Wu, MC. et al. A comparative study on sorption and diffusion of Cs in crushed argillite and granite investigated in batch and through-diffusion experiment. J Radioanal Nucl Chem 311, 1155–1162 (2017). https://doi.org/10.1007/s10967-016-5010-3

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  • DOI: https://doi.org/10.1007/s10967-016-5010-3

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