File(s) under permanent embargo
Electrodialysis in aqueous-organic mixtures
journal contribution
posted on 2015-01-01, 00:00 authored by S E Kentish, E Kloester, G W Stevens, C A Scholes, Ludovic DumeeThis review investigates the effects of hydro-organic solvents on ion exchange membranes used in conventional electrodialysis. The thermodynamics of electrodialysis is first presented in relation to operation in purely aqueous solutions, where the Donnan potential describes the equilibrium partitioning at the membrane/solvent interface. The mass transfer kinetics through the membrane are described using the Nernst-Planck equation, and concentration polarization describes the mass transfer resistance in the solution boundary layer. Each of these relationships is found to change significantly as the organic concentration in the solvent is increased and the system consequently deviates from ideality. The extent of membrane swelling in these mixed solvents is also critical, as it determines the diffusion coefficient of both ionic and non-ionic species within the membrane structure.
History
Journal
Separation & purification reviewsVolume
44Issue
4Pagination
269 - 282Publisher
Taylor & FrancisLocation
Abingdon, Eng.Publisher DOI
ISSN
1542-2119eISSN
1542-2127Language
engPublication classification
C1.1 Refereed article in a scholarly journalCopyright notice
2015, Taylor & Francis Group, LLCUsage metrics
Categories
No categories selectedKeywords
Electrodialysishydro-organic solventsdiffusionswellingion exchange membranesScience & TechnologyPhysical SciencesTechnologyChemistry, AppliedChemistry, AnalyticalEngineering, ChemicalChemistryEngineeringION-EXCHANGE MEMBRANESNONELECTROLYTE LIQUID-MIXTURESELECTROPLATING WASTE-WATERGAS DESULFURIZING AGENTSLACTIC-ACIDNAFION MEMBRANESSULFURIC-ACIDFERMENTATION BROTHRAMAN-SPECTROSCOPYCHARGED MEMBRANES
Licence
Exports
RefWorks
BibTeX
Ref. manager
Endnote
DataCite
NLM
DC