Patent Number: 7,708,892

Title: Conditioning of ion exchangers for adsorption of oxoanions

Abstract: The present invention relates to the use of inorganic salts for increasing the adsorption of oxoanions and/or thioanalogues thereof to metal-doped ion exchangers, preferably to iron oxide/iron oxyhydroxide-containing ion exchangers, preferably from water or aqueous solutions, and also the conditioning of these metal-doped ion exchangers having increased adsorption behaviour toward oxoanions and/or thioanalogues thereof by using inorganic salts with the exception of amphoteric ion exchangers which have both acidic and basic groups as functional groups.

Inventors: Klipper; Reinhold (Koln, DE), Schelhaas; Michael (Koln, DE), Neumann; Stefan (Leverkusen, DE), Stoll; Jens (Leverkusen, DE)

Assignee: LANXESS Deutschland GmbH

International Classification: C02F 1/42 (20060101)

Expiration Date: 5/04/12018