Specific model for nanofiltration

A model is developed which describes mass transfer through the combination of convective-diffusive flux in the pores and a diffusive flux in the membr ane material. This model takes into account membrane (membrane permeability , pore size) and solution (charge and size of the molecule) characteristics via five parameters which can be estimated from experimental data. This mo del is first validated by comparison with experimental results and then use d as a tool to evaluate the influence of the membrane solution characterist ics on the performance of nanofiltration process. (C) 1999 Elsevier Science Ltd. All rights reserved.