Mechanisms of the formation of additional capacity of sorbent in sorption experiments of nitric acid and the separation of acid and salt in solution are studied using mathematical modeling. A method for the calculation of the dielectric constant and the ratio of concentrations of molecules and electrolyte ions in the inner layer of the sorbent is proposed. A mathematical model is constructed, simulation results are presented, and their comparison with experimental data is performed.
$^1$Faculty of Physics, Moscow State University, Moscow, 119991, Russia
$^2$Institute of Geochemistry and Analytical Chemistry, Russian Academy of Sciences, Moscow, 119634, Russia
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