Physico-Chemical Modeling of the Behavior of Uranium During Heating, Boiling and Evaporation of Drinking Water from Different Regions

Based on the data of the macrocomponent chemical composition (cations: Ca2+, Mg2+, Na+, K+, Fetotal, anions: SO42-, HCO3-, Cl-) and uranium concentrations in natural drinking waters, calculations of thermodynamic equilibria in the Selector PC in the temperature range of 25-100 °C. The conducted phys...

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Bibliographic Details
Published in:Journal of Siberian Federal University. Chemistry 2024-01, Vol.17 (1), p.39-47
Main Authors: Eremin, Oleg V, Epova, Ekaterina S, Rusal, Olga S, Soktoev, Bulat R, Arynova, Shynar Zh
Format: Article
Language:Russian
Subjects:
Calcium ions
Chemical composition
Drinking water
Electrode potentials
Electrodes
Evaporation
Heating
Modelling
Room temperature
Sediments
Thermodynamic equilibrium
Uranium
Uranium dioxide
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Summary:Based on the data of the macrocomponent chemical composition (cations: Ca2+, Mg2+, Na+, K+, Fetotal, anions: SO42-, HCO3-, Cl-) and uranium concentrations in natural drinking waters, calculations of thermodynamic equilibria in the Selector PC in the temperature range of 25-100 °C. The conducted physicochemical modeling showed that at room temperatures, heating and boiling of water, soluble forms of uranium pass into the composition of sediments and scums in the forms of grimselite (K3Na(UO2) (CO3)3·H2O) and (or) vorlanite (CaUO4). This is true for 27 solutions with electrode potentials Eh785 mV, the deposition of uranium phases does not occur either at room temperature or during heating and boiling of water, except for its complete evaporation. In water, uranium is present in the form of uranyl tricarbonate UO2(CO3)34-.
ISSN:1998-2836
2313-6049