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Voltea - Capacitive DeIonisation CapDI

Last updated 992 days ago by Albert Verver


NL GUTS Group of Users of Technology for Separation in the Netherlands


20110419 Voltea - Mr. Eric Driessen - Capacitive DeIonisation CapDI

Voltea is a spin-off from Unilever. The current major shareholder is Pentair. CapDi makes use of ion selective membranes between two electrodes. The ions are temporarily captured between membrane and electrode. The ion lean water is the product. By reversing the polarity of the electrodes the ions are released and collected as a concentrate and discharged.

CapDi is suitable for tap and brackish waters till 2.500 ppm TDS for which the deionization is around 85%. Further polishing for real DI water can be done with EDI. The advantages are a very low power consumption and no chemicals used like with IX. State of the art is commercial scale till several m³/h. www.voltea.com


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