Abstract
Transport of nonreactive (tritium, HTO) and anion radionuclides through two columns with different diameters was experimentally and mathematically examined for three inflow rates. One-dimensional advective–dispersive experiments were effectively designed to investigate radionuclide transport through a numerical calibration/validation nonequilibrium model. The two columns were filled with crushed granite, and transport of HTO and two iodine species—iodate (IO3−) and iodide (I−)—through them was studied to obtain breakthrough curves for a water-saturated condition. The significance of I− was found in the smaller column for an input flow rate of 5 mL/min. The accelerated transport of I− may have resulted from anion exclusion, and its relatively stronger Coulomb repulsive force was probably because of its smaller hydration radius than IO3−.
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Acknowledgements
This project was mainly supported by the Ministry of Science and Technology (MOST, Taiwan, ROC) and the Atomic Energy Council (AEC, Taiwan, ROC) through a 2-year mutual fund program project under contract numbers 109-2622-E-007-022, 109-2623-E-007-006-NU, and 110-2623-E-007-004-NU. Partial financial support was provided by Start-up funds for doctoral research of the East China University of Technology (No. 1410000434), the CIRP Open Fund of Radiation Protection Laboratories, and the China Institute for Radiation Protection (CIRP), Taiyuan, China.
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Tien, NC., Lee, CP. Effect of anion repulsion on iodine transport through water-saturated crushed granite. J Radioanal Nucl Chem 332, 935–946 (2023). https://doi.org/10.1007/s10967-022-08653-y
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DOI: https://doi.org/10.1007/s10967-022-08653-y