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dc.contributor.authorFernández de Labastida Ventura, Marcos
dc.contributor.authorYaroshchuk, Andriy
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Química
dc.identifier.citationFernandez de Labastida, M.; Yaroshchuk, A. Nanofiltration of multi-ion solutions: Quantitative control of concentration polarization and interpretation by solution-diffusion-electro-migration model. "Membranes", 1 Abril 2021, vol. 11, núm. 4, p. 272:1-272:12.
dc.description.abstractFor effective use of advanced engineering models of nanofiltration quality of experimental input is crucial, especially in electrolyte mixtures where simultaneous rejections of various ions may be very different. In particular, this concerns the quantitative control of concentration polarization (CP). This work used a rotating disklike membrane test cell with equally accessible membrane surface, so the CP extent was the same over the membrane surface. This condition, which is not satisfied in the conventional membrane test cell, made possible correcting for CP easily even in multi-ion systems. Ion rejections were studied experimentally for several dominant salts (NaCl, MgCl2, Na2SO4 and MgSO4) and trace ions (Na+, NH4+, Cl- and NO3-) using NF270 membrane. The solution–diffusion–electro–migration model was used to obtain ion permeances from the experimental measurements. The model could well fit the experimental data except in the case of NH4+. The correlations between the ion permeances and type of dominant salt are discussed in the context of the established mechanisms of NF such as Donnan and dielectric exclusion. The obtained information contributes to the systematic transport characterization of NF membranes and may be ultimately useful for computational fluid dynamics simulations of the performance of the membranes in various applications.
dc.publisherMultidisciplinary Digital Publishing Institute (MDPI)
dc.rightsAttribution-NonCommercial-NoDerivates 4.0 International
dc.subjectÀrees temàtiques de la UPC::Enginyeria química
dc.subject.lcshThin films
dc.subject.lcshMembranes (Technology)
dc.subject.otherConcentration polarization
dc.subject.otherIon rejection
dc.subject.otherUnstirred-layer thickness
dc.subject.otherIonic permeance
dc.subject.otherSolution–diffusion–electromigration model
dc.titleNanofiltration of multi-ion solutions: Quantitative control of concentration polarization and interpretation by solution-diffusion-electro-migration model
dc.subject.lemacPel·lícules fines
dc.subject.lemacMembranes (Tecnologia)
dc.contributor.groupUniversitat Politècnica de Catalunya. R2EM - Resource Recovery and Environmental Management
dc.description.peerreviewedPeer Reviewed
dc.rights.accessOpen Access
dc.description.versionPostprint (published version)
local.citation.authorFernandez de Labastida, M.; Yaroshchuk, A.

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