RT Journal Article
T1 Liquid transport through sulfonated cation-exchange membranes for different water-alcohol solutions
A1 Godino Gómez, María Paz
A1 Barragán García, Vicenta María
A1 García Villaluenga, Juan Pedro
A1 Izquierdo Gil, María Amparo
A1 Ruíz Bauzá, Carlos
A1 Seoane Rodríguez, Benjamín
AB The aim of this work was to study the sorption and transport of different water–alcohol solutions(methanol, ethanol, 1-propanol and 2-propanol solutions) when a Nafion 117 membrane is separating them. It was observed that methanol permeability remains constant when varying the composition of the mixture. However, the permeability for the other alcohol solutions decreases from alcohol concentrations that are different for each alcohol. In addition, it was aimed to compare the behavior of membraneswith different morphologies when they were separating water and water–alcohol solutions. Nafion 117membrane and two sulfonated cation-exchange membranes (CR65-AZL-412 and MK-40) were used. Measurements of sorption and liquid transport were made using methanol and ethanol solutions. The uptake values for Nafion 117 membrane were higher than those obtained for CR65-AZL-412 and MK-40 membranes. The results reveal that, in contrast to Nafion membrane, a non-negligible water flux throughCR65-AZL-412 and MK-40 membranes was observed along with the alcohol diffusion through them. For these two latter membranes the permeability could not be calculated since the alcohol diffusion is not the only physical process that should be considered. In spite of it, the alcohol and water fluxes through CR65-AZL-412 and MK-40 were estimated; turning out that the water flux was higher than alcohol flux.
PB Elsevier Science, SA
SN 1385-8947
YR 2010
FD 2010-08-15
LK https://hdl.handle.net/20.500.14352/43707
UL https://hdl.handle.net/20.500.14352/43707
LA eng
NO © 2010 Elsevier B.V. The authors of this study gratefully acknowledge Prof. C. Larchet and Prof. V. Nikonenko for donating MK-40 membrane samples. Financial support from Universidad Complutense de Madrid underProject PR1/08-15918-A is also gratefully acknowledged.
NO Universidad Complutense de Madrid
DS Docta Complutense
RD 7 abr 2025