Abstract
For the safety assessement of deep geological repository for high-level radioactive waste, radionuclides transport behavior in rock systems is necessary to clairify and establish a suitable model. The advection–dispersion experiments(ADEx) was effectively designed to inadequate transport models through a calibration/validation process, and HTO, selenate (VI) and selenite (IV) migration behavior on crushed granite was studied by a high reliable and dynamic column device to obtailned retardation factor (R) and the dispersion coeffcient (D) by fitting experimental breakthrough curves (BTCs) in a various range of flow rates. Moreover, it showed the similar results between the BTCs of HTO and Se(VI) by fitting a equlibrium model due to no retardation effect. In fact, there was a relatively obvious sorption of Se(IV) in BTCs by fitting a retardation factor (R) value higher than 1. In addition, the two sites non-equilibrium model with a lowest root mean square error were applied to realize Se(IV) sorption mechanism on granite.
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Acknowledgements
This project was major supported by Initial Finicial Project (110/1410000434), East China University of Technology. The numerical analysis of this study was supported by the Ministry of Science and Technology (MOST, Taiwan) and and the Atomic Energy Council (AEC, Taiwan) through a 2 years mutual fund program project under contract number 109-2623 -E-007 -006 -NU and 110-2623 -E-007 -004 -NU .
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Shi, Y., Lee, CP., Yu, H. et al. Study on advection–dispersion behavior for simulation of HTO and Se transport in crushed granite. J Radioanal Nucl Chem 328, 1329–1338 (2021). https://doi.org/10.1007/s10967-021-07750-8
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DOI: https://doi.org/10.1007/s10967-021-07750-8