Modelling of CaBr2 Ions Transport Through Ceramic Nanofiltration Membrane.

rasha amer hajarat

Abstract


Nernst-Planck equation was used to try to understand the separating behaviour of Ca2+, and Br1- ions using nanofiltration membrane. The model was run for different membrane pores, different volumetric fluxes based on the membrane area values, and different ions concentration; to study the rejection behavior. In general, as the membrane pore radius increased, the rejection of Ca2+ and Br1- ions decreased; where the rejection of Ca2+ ion was the higher than the rejection of Br1- ion. While the rejections of Ca2+ and Br1- ions increased as volumetric flux increased. On the other hand, the concentration of Br1- inside the membrane active layer was higher than the concentration of Ca2+ ions. Thus the ions rejection is effected by membrane pore radius beside the volumetric flux.  


Keywords


Nanofiltration, membrane, ion, pore radius, rejection, volumetric flux.

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References


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