Prediction of The Chromium (III) Separation From Acidic Salt Solutions On Nanofiltration Membranes Using Donnan And Steric Partitioning Pore (DSP) Model

This paper presents experimental and modelling analysis of the application of nanofiltration for separation of chromium (III) from acidic salt solution. In the studies commercial nanofiltration HL membrane has been used. The experimental results have been interpreted by, based on the extended Nernst-Planck equation, Donnan and Steric Partitioning Pore (DSP) model. The obtained results showed satisfactory agreement between experimental and modelling data for the pressure range 10-24 bar and different concentrations of chloride and sulfate ions. It means that the DSP model may be helpful for the monitoring of nanofiltration applied to treatment of chromium wastewater.