Dynamic modeling of mass transfer through a nanofiltration membrane using calcium salt in drinking water

Mechanism specificity of ion separations in drinking water is necessary for the study of modeling transfer of calcium salt through nanofiltration membrane. In the present work, we have investigated a mathematical model which can specify the transfer phenomena of solute through a nanofiltration membrane and to predict its reject. The proposed model is based on the extended equation of Nemst-Planck. It is characterized by constants called transfer parameters, which have been determined according to the composition of the initial solution as a binary or a ternary mixture. The established model permitted us to predict the retention of calcium salt. The result of the application of the model has shown that there is a good agreement between the theoretical and experimental curves.