2DialysisWhat is dialysis?Dialysis is a membrane process where solutes (MW~<100 Da) diffuse from one side of the membrane (feed side) to the other (dialysate or permeate side) according to their concentration gradient. First application in the 70’s. General Principles•Separation between solutes is obtained as a result of differences in diffusion rates. •These are arising from differences in molecular size and solubility. •This means that the resistance increases with increasing molecular weight.
3Dialysis•A typical concentration profile for dialysis with boundary layer resistencescontains low-molecular-weight solute, A intermediate size molecules, B , and a colloid, C
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