Abstract
To estimate the cesium sorption by the bentonite and to obtain the isotherms, some batch-adsorption experiments are being carried out, being the Kd (retardation coefficient) calculated from these isotherms. One-dimensional flow cell was constructed to measure the bentonite permeability regarding to a cesium solution, which results will be used to evaluate the diffusion coefficient–D. It will be used the PHREEQC software to model the transport of the cesium radionuclide through this bentonite with the Kd and D data. The modelling of radionuclide transport in the Brazilian materials will contribute to evaluate the efficiency of multi-barriers system of the national repository, because it is one of its safety criteria.
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de Tello, C.C.O., dos Santos, D.M.M. & Teixeira, T.B. Study of the sorption and modelling of cesium by a Brazilian bentonite using PHREEQC. MRS Advances 5, 245–252 (2020). https://doi.org/10.1557/adv.2020.57
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DOI: https://doi.org/10.1557/adv.2020.57