Tandem system for adsorptive separation

US6287461A · kind A · utility

Assignee

• Sartorius AG · DE

Inventors

• Wolfgang Demmer · Göttingen, DE
• Dietmar Nussbaumer · Göttingen, DE
• Abdul Weiss · Göttingen, DE

Key dates

• Filing date: Sep 16, 1999
• Grant date: Sep 11, 2001
• Expiry date: Sep 16, 2019

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01D61/00
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

Adsorptive separation is performed on liquid media by directing the media containing a target substance through an adsorber stage A whereby the target substance is adsorbed; in the last phase of loading stage A and prior to breakthrough of the target substance in the stage A permeate, the stage A permeate is directed to a second adsorber stage B. Upon completion of the stage A loading, the target substance from stage A is eluted with buffer solution, which buffer solution is introduced to stage B, and liquid medium is directed to the preloaded stage A, while stage A is eluted so as both recover the target substance and regenerate the adsorptive capacity of stage A.