Foams for removing pollutants and/or heavy metals from flowable media

US7267776B2 · kind B2 · utility

Assignee

• LANXESS Deutschland GmbH · DE

Inventors

• Bernd Wurth · Landsberg am Lech, DE
• Bernd Lehmann · Cologne, DE
• Klaus-Dieter Novak · Moers, DE
• Hendrik Kathrein · McMurray, US
• Andreas Schlegel · Echterdingen, DE

Key dates

• Filing date: May 4, 2005
• Grant date: Sep 11, 2007
• Expiry date: Jun 17, 2025

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S210/912
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The present invention relates to a method of using foam to remove pollutants and/or heavy metals from a flowable media. The method may include providing a foam that may include cavities wherein the cavities may include an adsorbent composition of iron oxyhydroxy granules. The iron oxyhydroxy granules may have a BET surface area of >100 m2/g and a mean particle size of 0.1 mm-2 mm. The method may further include passing a flowable media containing pollutants and/or heavy metals through the foam wherein the pollutants and heavy metals may be removed from the flowable media by the iron oxyhydroxy granules. A method of manufacturing the foam is also disclosed. The method may include introducing an adsorbent composition into a liquid reaction composite to form a mixture and adding an isocyanate reaction component to the mixture to form the foam.