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22.679 Keywords • 48.645 Synonyms • 5.293 Translations • 7.913 Pronunciations • 149.412 Cross-references

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ion exchange

ion exchange (GB)
A method already discovered at the end of the 19th century, in which ions (Greek ion = migratory) - that is, particles such as atoms or molecules - are exchanged between two substances with the help of so-called ion exchangers. Such ion exchangers are high molecular weight substances such as silicate minerals (zeolites) or synthetically produced resins which are able to give off their own ions (without breaking up) and to pick up other solutions in solution. This is used for water softening, for example, by removing calcium and magnesium ions from the water and replacing them with sodium ions (the ion exchanger). A special form is ion exchange chromatography (see chromatography ).

An ion exchange is at the winemaking for stabilization (removal of Weinstein ), in the filtration, For leavening or deacidification as well as for the production of RTK (rectified concentrated grape must). This is usually combined with osmosis (Reverse osmosis) practiced. But this can be the taste or that Aroma of the wine change greatly. The method was therefore according to EU Regulation prohibited and is only allowed in exceptional cases with certain specifications.

Complete sets of the numerous cellar techniques, as well as the wine regulated wine, sparkling wine and distillate types are under winemaking contain. Comprehensive information on wine law is available under the keyword wine law,

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