ULTRAFILTRATION AND REVERSE-OSMOSIS IN UNSTIRRED BATCH CELL OF CHARGED SOLUTES (PROTEIN, SALTS) WITH TOTAL RETENTION

Unlike non-charged macromoles, the general unsteady state convection-d iffusion equations associated with the osmotic theory do not allow acc urate prediction of the ultrafiltration or reverse osmosis in unstirre d batch cell of charged solutes. According to the results obtained wit h total retention of bovine serum albumin, we postulate a modification of the physicochemical environment of the solute in the boundary laye r like the osmotic pressure. However, for reach solute a new set of os motic pressure data allows to simulate accurately all the experiments performed with alike concentration profiles.