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Autor Izquierdo Gil, María Amparo |
Documentos disponibles escritos por este autor (29)
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Godino Gómez, María Paz ; Barragán García, Vicenta María ; García Villaluenga, Juan Pedro ; Izquierdo Gil, María Amparo ; Ruiz Bauzá, Carlos ; Seoane Rodríguez, Benjamín | Elsevier Science, SA | 2010-08-15The 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 [...]![]()
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Godino Gómez, María Paz ; Barragán García, Vicenta María ; Izquierdo Gil, María Amparo ; García Villaluenga, Juan Pedro ; Seoane Rodríguez, Benjamín ; Ruiz Bauzá, Carlos | Taylor & Francis Inc | 2011Measurements of liquid transport were made with a Nafion membrane at different cationic forms. The experimental data are used to estimate the alcohol permeability when the membrane is separating water and water-methanol solutions. The obtained p[...]![]()
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Izquierdo Gil, María Amparo ; Barragán García, Vicenta María ; Godino Gómez, María Paz ; García Villaluenga, Juan Pedro ; Ruiz Bauzá, Carlos ; Seoane Rodríguez, Benjamín | Elsevier Science BV | 2009-01-12The salt flow through several commercial cation-exchange membranes separating two NaCl alcohol-water solutions with the same alcohol concentration, but different NaCl concentration was investigated. Homogeneous (Nafion-115) and heterogeneous (MK[...]![]()
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Izquierdo Gil, María Amparo | Universidad Complutense de Madrid, Servicio de Publicaciones | 1997-10-22En este trabajo se han diseñado, construido y puesto a punto dos tipos de dispositivos experimentales, que nos permiten, los dos, medir los flujos en destilación en membranas con las modalidades de contacto directo y con "gap" de aire. Se ha est[...]![]()
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Izquierdo Gil, María Amparo ; Lorenz, M. G. ; Sánchez Reillo, R. ; Fernández Pineda, Cristóbal | 2007Membrane distillation (MD) [I] is a relatively new process that is being investigated world-wide as a low cost, energy saving alternative to conventional separation processes such as distillation and reverse osmosis (RO). This process offers som[...]![]()
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Godino Gómez, María Paz ; Barragán García, Vicenta María ; García Villaluenga, Juan Pedro ; Izquierdo Gil, María Amparo ; Seoane Rodríguez, Benjamín ; Ruiz Bauzá, Carlos | Elsevier Science SA | 2009-10-01This study investigates the influence of different operating parameters in the transport of water and methanol through a Nafion membrane when it is used to separatewater fromamethanol–water solution. For this purpose, measurements of mass flux a[...]![]()
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Barragán García, Vicenta María ; Izquierdo Gil, María Amparo ; Godino Gómez, María Paz ; García Villaluenga, Juan Pedro | Amer Chemical Soc | 2009-10-01The effect of an ac sinusoidal perturbation of known amplitude and frequency superimposed to the usual dc applied electric voltage difference on the electroosmotic flow through three cation-exchange membranes with different morphology has been s[...]![]()
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Barragán García, Vicenta María ; García Villaluenga, Juan Pedro ; Godino Gómez, María Paz ; Izquierdo Gil, María Amparo ; Ruiz Bauzá, Carlos ; Seoane Rodríguez, Benjamín | Elsevier Science BV | 2008-12-01Electro-osmosis experiments through three cation-exchange membranes with different morphology and similar electric properties have been performed using methanol-water solutions under different experimental conditions. The influence on the electr[...]![]()
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Single gas permeation experiments results using neon, argon, nitrogen and methane are reported. From gas permeation experiments the characteristic parameters of the Knudsen and Poiseuille transport mechanisms were determined by means of an equat[...]![]()
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Izquierdo Gil, María Amparo ; García Villaluenga, Juan Pedro ; Muñoz San Martín, Sagrario ; Barragán García, Vicenta María | MDPI | 2020-08-17The salt permeability through three commercial cation-exchange membranes with different morphologies is investigated in aqueous NaCl solutions. Ion-exchange membranes (IEMs) find application in different processes such as electrodialysis, revers[...]![]()
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Vacuum membrane distillation (VMD) has been studied as a separation process to remove volatile organic compounds from aqueous streams. A vapour pressure difference across a microporous hydrophobic membrane is the driving force for the mass trans[...]![]()
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The thermal resistance technique for measurement of the thermal conductivity of microporous thin membranes is described. A modified and enhanced Lees' disc apparatus was used. Several samples of membranes were held between a hot copper plate and[...]![]()
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Izquierdo Gil, María Amparo ; Barragán García, Vicenta María ; García Villaluenga, Juan Pedro ; Godino Gómez, María Paz | Pergamon-Elsevier Science Ltd | 2012The water uptake of different aqueous salt solutions in different Nafion membranes, and the salt transport through those membranes under the driving force of a concentration gradient, have been studied. These experiments have been performed by u[...]![]()
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García Payo, María del Carmen ; Izquierdo Gil, María Amparo ; Fernández Pineda, Cristóbal | Academic Press Inc Elsevier Science | 2000-10-15A new concept of liquid entry pressure measurements is applied to study the hydrophobicity of microporous membranes for aqueous alcohol solutions. The effects of alcohol concentration, type of alcohol, and temperature on liquid entry pressure of[...]