Molten Metal got its first plant running in December 1995, a small system in Oak Ridge, Tenn . It opened a second plant there last December, processing radioactive ion exchange resins.
32.
Spedding developed an ion exchange method of separating and purifying rare earth elements using ion exchange resins, and later used ion exchange to separate isotopes of individual elements, including hundreds of grams of almost pure nitrogen-15.
33.
This is done by acid catalysis ( either sulfuric acid or acidic ion exchange resins ) followed by purification of the trioxane by distillation and / or extraction to remove water and other active hydrogen containing impurities.
34.
Aside from the soluble chloride salts of divalent cations removed from the softened water, softener regeneration wastewater contains the unused fifty to seventy percent of the sodium chloride regeneration flushing brine required to reverse ion exchange resin equilibria.
35.
Finally, by filling the whole volume of the particle pores with an extractant ( complexing agent ), a higher capacity for solutes can be achieved than with ordinary adsorption or ion exchange resins, where only the surface area is available.
36.
If the dishwasher has run out of the salt that recharges the ion exchange resin that softens the water, and the water supply is " hard ", limescale deposits can appear on all items, but are especially visible on glassware.
37.
However, in 1976 two Polish students from GdaDsk discovered a simple way of making it by extracting opiate alkaloids from poppy straw by using ion exchange resin, acetone, ammonia water and a few other chemicals used in the last step of production.
38.
However, in a more recent design proposed by Klaus Lackner, the process can be carried out at only 40 �C by using a polymer-based ion exchange resin, which takes advantage of changes in humidity to prompt the release of captured CO 2, instead of using a kiln.
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