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Factors affecting flux and ethanol separation performance in vacuum membrane distillation (VMD)

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dc.contributor.authorIzquierdo Gil, María Amparo
dc.contributor.authorJonsson, G.
dc.date.accessioned2023-06-20T10:42:12Z
dc.date.available2023-06-20T10:42:12Z
dc.date.issued2003-03-15
dc.description© 2002 Elsevier Science B.V. Postdoctoral grant from Universidad Complutense of Madrid by M.A. Izquierdo Gil and support from the Danish Directorate for Development are gratefully acknowledged.
dc.description.abstractMembrane distillation (MD) has a great potential as a concentration process for temperature labile liquids such as fruit juices, etc. Besides water, also aroma compounds will permeate through the membrane depending on their volatility and how the MD process is operated on the permeate side.In this paper, an experimental and theoretical investigation of the influence of concentration polarisation and temperature polarisation on the flux and selectivity of binary aqueous mixtures of ethanol is presented for vacuum membrane distillation (VMD) processes. Experimental results include changes of the following parameters: nature of solutions, membrane material and pore size, feed temperature, recirculation flow rate. One method was proposed in order to evaluate the concentration polarisation effects from the fit of the experimental data. General models taking into account Knudsen and viscous flows were proposed, but viscous contribution resulted to be negligible under our operating conditions. Therefore, theoretical fluxes were estimated using Knudsen model and a good agreement between them and the experimental ones was found.
dc.description.departmentDepto. de Estructura de la Materia, Física Térmica y Electrónica
dc.description.facultyFac. de Ciencias Físicas
dc.description.refereedTRUE
dc.description.sponsorshipDanish Directorate for Development
dc.description.statuspub
dc.eprint.idhttps://eprints.ucm.es/id/eprint/25306
dc.identifier.doi10.1016/S0376-7388(02)00540-9
dc.identifier.issn0376-7388
dc.identifier.officialurlhttp://dx.doi.org/10.1016/S0376-7388(02)00540-9
dc.identifier.relatedurlhttp://www.sciencedirect.com/
dc.identifier.urihttps://hdl.handle.net/20.500.14352/51033
dc.issue.number1
dc.journal.titleJournal of Membrane Science
dc.language.isoeng
dc.page.final130
dc.page.initial113
dc.publisherElsevier Science BV
dc.rights.accessRightsrestricted access
dc.subject.cdu536
dc.subject.keywordVacuum Membrane Distillation
dc.subject.keywordMicroporous Hydrophobic Membranes
dc.subject.keywordKnudsen Flow
dc.subject.keywordConcentration Polarisation
dc.subject.ucmTermodinámica
dc.subject.unesco2213 Termodinámica
dc.titleFactors affecting flux and ethanol separation performance in vacuum membrane distillation (VMD)
dc.typejournal article
dc.volume.number214
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relation.isAuthorOfPublication.latestForDiscovery7577a695-65ee-44e1-b7aa-8945ac183fb5

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