Continuous process for preparing organic acids by fermentation

US4882277A · kind A · utility

Assignee

• Huls Aktiengesellschaft · DE

Inventors

• Michael Czytko · Bochum, DE
• Kiyoshi Ishii · Shinagawa, JP
• Kimitoshi Kawai · Kasai, JP

Key dates

• Filing date: Dec 19, 1986
• Grant date: Nov 21, 1989
• Expiry date: Dec 19, 2006

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C12M47/10
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

Organic acids are prepared by fermentation and then separated from the fermentation broth by means of an electrodialysis. The present process does not require an addition of an alkali. The organic acids are recovered as free acids with high purity and at high yields.