Influence of downstream pressure on pervaporation properties of PDMS and POMS based membranes

摘要

Properties of one POMS and two PDMS based (Pervatech, Pervap 4060) membranes in recovery of various organic components (acetone, butanol, ethanol, ethyl acetate) from aqueous binary mixtures (4 wt.% of organics) were determined during pervaporation at various permeate pressures (1-25 mbar). Performances of membranes were compared, finding that Pervap 4060 is the most effective membrane in all systems tested, whereas Pervatech is the least effective.