deionization

[dē‚ī·ən·ə′zā·shən]

(chemistry)

An ion-exchange process in which all charged species or ionizable organic and inorganic salts are removed from solution.

(electronics)

The return of an ionized gas to its neutral state after all sources of ionization have been removed, involving diffusion of ions to the container walls and volume recombination of negative and positive ions.

cation-exchange softening

The softening of water by the removal of dissolved ionic contaminants in hard water (such as scale-forming magnesium and calcium ions) and their replacement with sodium ions, which are more soluble.

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References in periodicals archive

Deionization: Use of positively and negatively charged resins to remove unwanted ions from water used for dialysis by exchanging the unwanted ions for Hydrogen and Hydroxyl, which combine to form H2O.

Water Treatment for Hemodialysis: What You Must Know to Keep Patients Safe

* Deionization. Also called demineralization or ion exchange, this process uses synthetic resins to remove ions and minerals from water.

Is your bottled water killing you?

Department of Energy's Lawrence Livermore National Laboratory (LLNL) for the development and commercialization of Carbon Aerogel material sciences-based capacitive deionization technology (CDT) for water purification, as well as Carbon Aerogel for hydrogen generation, insulation, including fuel cells and nanotechnology electrodes.

CDT Systems Receives Second License for Manufacturing Carbon Aerogel for Fuel Cells, Nanotechnology Electrodes

Deionized water (> 15 M[ohm] [cm.sup.-1]) prepared with Millipore Elix 10 water deionization system was used for solution preparations.

Novel copper immersion coating on magnesium alloy AZ91D in an alkaline bath

Indeed, they resort to false advertising: "The world's purest water!" Anyone with a degree in this field knows it takes a filtration, deionization and distillation in a huge glass still and you wouldn't drink the water!

Are purifiers/distillers slowly killing you because of environmental changes?

New from Millipore Corporation is a cost-effective laboratory water purification system that can convert pretreated (distillation, deionization, reverse-osmosis) water to ultrapure (Type I) water.

Water purification system

To create this "clean" water, which is typically graded as Type I (reagent grade), of ultrapure, Type II (analytical grade) and Type III (laboratory grade), purification systems use one or a combination of techniques: distillation, deionization, ultraviolet oxidation or some type of filtration, such as carbon adsorption, microfiltration, ultrafiltration or reverse osmosis.

Market profile: water purification systems

Word from the ROWPU headshed is the deionization cartridges, NSN 4610-01-116-0501, used in the removal of nuclear contaminants now have an extended shelf-life.

Water PM tidbits

Friday notes that there are no new technological advances in filtration; instead, water treatment specialists deal with a combination of existing technologies that can include "carbon filtration softening, reverse osmosis, nano filtration, deionization, and a handful of others." He adds that "the advances are not in technology but in the application of those technologies."

Water matters

After distillation and deionization the water had a resistivity of 18 M[ohm]/cm.

Automatic on-line sample introduction for capillary electrophoresis connected via electrospray with condensation nucleation light scattering detection/Proovi automaatne sisestamine katkematult tootava tuumakondensatsiooni valgushajumisdetektoriga kapillaarelektroforeesi