Liquid cation exchanger

US9315443B2 · kind B2 · utility

Assignee

• EVONIK DEGUSSA GMBH · DE

Inventors

• Frank Erhardt · Bielefeld, DE
• Thomas Haas · Munster, DE
• Martin Roos · Oestrich-Winkel, DE
• Daniel Demicoli · Essen, DE
• Markus Poetter · Munster, DE
• Anja Schubert · Raesfeld, DE
• Jan Christoph Pfeffer · Hanau, DE
• Thomas Tacke · Friedrichsdorf, DE
• Harald Haeger · Thedinghausen, DE
• Andreas Pfennig · Fürstenfeld, AT
• Marie-Dominique Przybylski-Freund · Harsewinkel, DE

Key dates

• Filing date: Dec 1, 2011
• Grant date: Apr 19, 2016
• Expiry date: Jul 17, 2032

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C02F2101/34
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The invention relates to a method for removing an organic compound having one or more positive charges from an aqueous solution. Said method consists of the following steps a) the aqueous solution containing the organic compound, and a hydrophobic organic solution which contains a hydrophobic liquid cation exchanger having one or more negative charges and a negative total charge, are provided, b) the aqueous solution and the organic solution are brought into contact with each other and c) the organic solution is separated from the aqueous solution.