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RESEARCH PRODUCT
How Electrical Heterogeneity Parameters of Ion-Exchange Membrane Surface Affect the Mass Transfer and Water Splitting Rate in Electrodialysis
Veronika SarapulovaNatalia PismenskayaOlesya RybalkinaChristian LarchetElizaveta KorzhovaS.a. MareevSvetlana ZyryanovaVictor NikonenkoEvgeniy BoykoV.v. GilLasaad Dammaksubject
Materials scienceSurface PropertiesAnalytical chemistry02 engineering and technology010402 general chemistry01 natural sciencesCatalysisArticleInorganic ChemistryDiffusion layerlcsh:ChemistrychronopotentiometryElectricityMass transferion-exchange membrane[CHIM]Chemical SciencesPhysical and Theoretical ChemistryelectrodialysisMolecular Biologylcsh:QH301-705.5SpectroscopyvoltammetryMembrane methodIon exchangeelectroconvectionOrganic ChemistryWaterMembranes ArtificialGeneral MedicineElectrochemical TechniquesElectrodialysis021001 nanoscience & nanotechnology6. Clean water0104 chemical sciencesComputer Science ApplicationsIon ExchangeMembranelcsh:Biology (General)lcsh:QD1-999Water splittingSurface modification0210 nano-technologyDialysissurface modificationFiltrationdescription
Electrodialysis (ED) has been demonstrated as an effective membrane method for desalination, concentration, and separation. Electroconvection (EC) is a phenomenon which can essentially increase the mass transfer rate and reduce the undesirable water splitting effect. Efforts by a number of researchers are ongoing to create conditions for developing EC, in particular, through the formation of electrical heterogeneity on the membrane surface. We attempt, for the first time, to optimize the parameters of surface electrical heterogeneity for ion-exchange membranes used in a laboratory ED cell. Thirteen different patterns on the surface of two Neosepta anion-exchange membranes, AMX and AMX-Sb, were tested. Low-conductive fluoropolymer spots were formed on the membrane surface using the electrospinning technique. Spots in the form of squares, rectangles, and circles with different sizes and distances between them were applied. We found that the spots&rsquo
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2020-02-01 |