Chemistry: molecular biology and microbiology – Micro-organism – tissue cell culture or enzyme using process... – Process involving micro-organisms of different genera in the...
Reissue Patent
2006-07-11
2006-07-11
Lilling, Herbert J. (Department: 1651)
Chemistry: molecular biology and microbiology
Micro-organism, tissue cell culture or enzyme using process...
Process involving micro-organisms of different genera in the...
C435S140000, C435S170000, C435S252700
Reissue Patent
active
RE039175
ABSTRACT:
A modified water-immiscible solvent useful in the extraction of acetic acid from aqueous streams is a substantially pure mixture of isomers of highly branched di-alkyl amines. This solvent is substantially devoid of mono-alkyl amines and alcohols. Solvent mixtures formed of such a modified solvent with a desired cosolvent, preferably a low boiling hydrocarbon which forms an azeotrope with water are useful in the extraction of acetic acid from aqueous gaseous streams. An anaerobic microbial fermentation process for the production of acetic acid employs such solvents, under conditions which limit amide formation by the solvent and thus increase the efficiency of acetic acid recovery. Methods for the direct extraction of acetic acid and the extractive fermentation of acetic acid also employ the modified solvents and increase efficiency of acetic acid production. Such increases in efficiency are also obtained where the energy source for the microbial fermentation contains carbon dioxide and the method includes a carbon dioxide stripping step prior to extraction of acetic acid in solvent.
REFERENCES:
patent: 4720577 (1988-01-01), Wojtech et al.
patent: 5173429 (1992-12-01), Gaddy et al.
patent: 5254465 (1993-10-01), Wise
patent: 5254665 (1993-10-01), Crews et al.
patent: 5593886 (1997-01-01), Gaddy
patent: 5807722 (1998-09-01), Gaddy
patent: 6136577 (2000-10-01), Gaddy
patent: 6753170 (2004-06-01), Gaddy
patent: 2004/0236149 (2004-11-01), Gaddy
patent: WO-98/00558 (1998-01-01), None
Ricker et al., “Solvent Extraction with amines for recovery of acetic acid from dilute aqueous industrial streams”J. Sep Proc. Tech. 1980 1 (2) pp. 23-30 1980.
Gaddy, J. “Biological Production of Products from Waste Gases”, U.S. Appl. No. 09/219,395, filed Dec. 23, 1998.
Ricker et al., “Solvent properties of organic bases for extraction of acetic acid from water”,J. Sep. Proc. Technol.1979 1(1):36-41.
J. Vega et al., “The Biological Production of Ethanol from Synthesis Gas”, Applied Biochemistry and Biotechnology, 20/21 781-797 (1989).
J. Vega et al., “Study of Gaseous Substrate Fermentations: Carbon Monoxide Conversion to Acetate. 2. Continuous Culture”, Biotechnology and Bioengineering, 34:785-793 (1989).
K. Klasson et al., “Bioconversion of Synthesis Gas into Liquid or Gaseous Fuels”, Enzyme Microb. Technol., 14:602-608 (Aug., 1992).
K. Klasson et al., “Biological Production of Liquid and Gaseous Fuels from Synthesis Gas”, Applied Biochemistry and Biotechnology, 24/25:857-873 (1990).
Clausen Edgar C.
Gaddy James L.
Ko Ching-Whan
Wade Leslie E.
Wikstrom Carl V.
Bioengineering Resources, Inc.
Celanese International Corporation
Howson and Howson
Lilling Herbert J.
LandOfFree
Microbial process for the preparation of acetic acid as well... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Microbial process for the preparation of acetic acid as well..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Microbial process for the preparation of acetic acid as well... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3607962