Solid separation from a mixed suspension through electric-field-enhanced crystallization
article
When applied to a pure component suspension in an apolar solvent, a strong inhomogeneous electric field induces particle movement, and the particles are collected at the surface of one of the two electrodes. This new phenomenon was used to separately isolate two organic crystalline compounds, phenazine and caffeine, from their suspension in 1,4-dioxane. First, crystals of both compounds were collected at different electrodes under the influence of an electric field. Subsequent cooling crystallization enabled the immobilization and growth of the particles on the electrodes, which were separately collected after the experiment with purities greater than 91 %. This method can be further developed into a technique for crystal separation and recovery in complex multicomponent suspensions of industrial processes. © 2016 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
Topics
Crystal engineeringDielectrophoresisElectrophoresisMulticomponent mixturesSeparation technologyCrystal engineeringElectric fieldsElectrodesElectrophoresisSeparationCrystal separationCrystalline compoundsElectric field-enhanced crystallizationIndustrial processsInhomogeneous electric fieldsMulticomponent mixtureSeparation technologiesSubsequent coolingSuspensions (fluids)
TNO Identifier
575379
ISSN
1433-7851
Source
Angewandte Chemie - International Edition, 55(52), pp. 16088-16091.
Publisher
Wiley-VCH Verlag
Pages
16088-16091
Files
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