A review of membrane fluxes for the dehydration of acetic acid by pervaporation

Three diffrent membranes are categorised: novel sulfonated polybenzimidazole (SPBI), SPEK-C/PVA blend membranes and zeolite membrane. The best performers in terms of flux, which reaches a maximum of 492kg/m h, are SPEK-C/PVA blend membranes. Two others membrane compare with each other. The concentration of the sulfuric acid aqueous solution for sulfonation modification plays an important role. and the hydrophilic–hydrophobic balance of the membrane can be reached by controlling sulfonation degree. The performance of the membrane was investigated by PV of water/acetic acid mixtures.

کلیدواژه ها:

Dehydration ، pervaporation ، membrane ، flux