Ethanol dehydration through crosslinked PVA/PES composite membranes with plasma treated asymmetric support

BETINA VILLAGRA DI CARLO; ELZA CASTRO VIDAURRE; ALBERTO CLAUDIO HABERT

RIO DE JANEIRO

Simposio; II Simpósio de Processos de Separação com Membranas – SIMPAM 2013; 2013

Universidad Federal de Rio de Janeiro- INST A.LUIZ COIMBRA DE POS-GRADUACAO E PESQUISA DE ENGENHARIA-PEQ

Poly(vinyl alcohol) was chosen as active layer for the composite membrane due to its high hydrophilicity and thermal resistance. Support membranes were synthesized through the wet phase inversion process. Polyethersulfone was selected to synthesize porous membranes. Polyvinylpyrrolidone was added as soluble component to promote porous structure while N,Ndimethylformamide was chosen as solvent to prepare a solution for the casting process. Distilled water was used as coagulating bath. A radio-frequency reactor (Harry-Plasma, Inductive, 8–12 MHz) was used for plasma treatment. The precursor was atmospheric air, fed at room temperature.