Title:
METHOD AND DEVICE FOR SEPARATING LOW MOLECULAR FERMENTATION PRODUCTS FROM MIXTURES OF SUBSTANCES
Document Type and Number:
WIPO Patent Application WO2003040380
Kind Code:
A3
Abstract:
The invention relates to a method enabling low molecular fermentation products to be removed from complex-structured higher molecular reaction mixtures. The fermentation products are separated in the following manner: the permeability capacity of said substances is utilized by means of membranes which are used for reverse osmosis and nanofiltration in order to separate them from other higher molecular substances in the fermentation medium. It is thus possible to wash out the products arising in the fermentation process from even extremely complex-structured reaction mixtures, as for instance those which are accumulated in bioreactors. The advantage and novelty of the method reside in the fact that complex upstream and downstream method steps can be dispensed with in order to obtain products arising from the fermentation process which are so pure that further refinement can be achieved in an unproblematic manner.
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Inventors:
HOFMANN GUENTER (DE)
SCHNEIDER MANFRED (DE)
SCHNEIDER MANFRED (DE)
Application Number:
PCT/EP2002/012053
Publication Date:
December 24, 2003
Filing Date:
October 29, 2002
Export Citation:
Assignee:
MESSO CHEMIETECHNIK GMBH (DE)
HOFMANN GUENTER (DE)
SCHNEIDER MANFRED (DE)
HOFMANN GUENTER (DE)
SCHNEIDER MANFRED (DE)
International Classes:
C12J1/04; C12M1/12; C12P7/28; C12P7/46; (IPC1-7): C12P7/54
Foreign References:
| US5503750A | 1996-04-02 | |||
| DE4212187C1 | 1993-04-15 |
Other References:
PARK Y S ET AL: "ACETIC ACID PRODUCTION USING A FERMENTOR EQUIPPED WITH A HOLLOW FIBER FILTER MODULE", BIOTECHNOLOGY AND BIOENGINEERING, vol. 33, no. 7, 1989, pages 918 - 923, XP002245742, ISSN: 0006-3592
HAN I S ET AL: "Nanofiltration of model acetate solutions", JOURNAL OF MEMBRANE SCIENCE, ELSEVIER SCIENTIFIC PUBL.COMPANY. AMSTERDAM, NL, vol. 107, no. 1, 15 November 1995 (1995-11-15), pages 107 - 113, XP004041244, ISSN: 0376-7388
TIMMER J M K ET AL: "TRANSPORT OF LACTIC ACID THROUGH REVERSE OSMOSIS AND NANOFILTRATIONMEMBRANES", JOURNAL OF MEMBRANE SCIENCE, ELSEVIER SCIENTIFIC PUBL.COMPANY. AMSTERDAM, NL, vol. 85, no. 2, 1 November 1993 (1993-11-01), pages 205 - 216, XP000490124, ISSN: 0376-7388
HAN I S ET AL: "Nanofiltration of model acetate solutions", JOURNAL OF MEMBRANE SCIENCE, ELSEVIER SCIENTIFIC PUBL.COMPANY. AMSTERDAM, NL, vol. 107, no. 1, 15 November 1995 (1995-11-15), pages 107 - 113, XP004041244, ISSN: 0376-7388
TIMMER J M K ET AL: "TRANSPORT OF LACTIC ACID THROUGH REVERSE OSMOSIS AND NANOFILTRATIONMEMBRANES", JOURNAL OF MEMBRANE SCIENCE, ELSEVIER SCIENTIFIC PUBL.COMPANY. AMSTERDAM, NL, vol. 85, no. 2, 1 November 1993 (1993-11-01), pages 205 - 216, XP000490124, ISSN: 0376-7388
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