Formation of the dynamic membranes at separation of biological solutions by ultrafiltration

Impacts of the working pressure on the formation of dynamic membranes at separation of biological solutions by ultrafiltration were studied. It was found that when biological solutions are being separated the dynamic layer of the membrane is formed on the working surfaces of the UF-membranes from the substances contained in the solution. It was established that preassure increase leads to increase of the retention coefficient and specific flow of solvent. If the pressure is higher than 2 mPa retention coeficient and specific flow of the solvent go to the asymptotic meaning. The retention coeficient and specific flow of the solvent of the dynamically formed membranes depend in a complicated way on the initial solution concentration and working pressure. Experimental data about retention coeficient, specific flow of the solvent depending on concentration allowed receive numeric meanings of the empiric coeficient for theoretical description, kinetics coeficient and forecasting of the separation mechanisms of the industrial solutions of the analogue class.

ultrafiiltration, dynamic membrane, specific flow of the solvent, biological solution, retention coefficient