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Magdalena Hofman-Bieniek,Robert Pietrzak,Katarzyna Jasiewicz 한국화학공학회 2014 Korean Journal of Chemical Engineering Vol.31 No.2
Preparation of polymeric membranes based on polyethersulfone (PES) modified by adding different amountsof a pore-forming agent (PVP) is presented, and potential application of the membranes obtained for removal of phenolfrom the liquid phase is examined. The addition of various amounts of PVP has been shown to bring about changesin the content of the surface oxygen groups, but has no significant effect on the chemical character of the groups andacidic groups dominate. Filtration by phenol solution leads to significant changes in the total content of surface oxides;however, the acidic groups remain dominant. Membranes characterized by higher porosity exhibited more stable andhigher rejection ratio for phenol removal. Although all the membranes were characterized by similar rejection ratiosfor phenol removal, the cake resistance (Rc) and pore resistance (Rp) values were found to depend significantly onthe structure and porosity of the membrane applied for filtration.