Title:
Extraction of carboxylic acid from a thin water style
Document Type and Number:
Japanese Patent JP5948438
Kind Code:
B2
Abstract:
The present invention provides a process for removing free carboxylic acid from an aqueous solution comprising a mass fraction of less than 1 %wt of the free carboxylic acid, which process comprises the steps of: (a) contacting the aqueous solution with a depleted solvent comprising a polyamine extractant to obtain an extract enriched in free carboxylic acid and a raffinate having a reduced free carboxylic acid content; and (b) separating the raffinate from the extract, wherein the polyamine extractant is a compound containing at least two nitrogen atoms, and at least one double bond between a nitrogen atom and a carbon atom, wherein the carboxylic acid is produced by the fermentation of biomass.
Inventors:
De Hahn, Andre Bania
Kuruji Isanak, Ahniez
Swool, Boero
Kuruji Isanak, Ahniez
Swool, Boero
Application Number:
JP2014553270A
Publication Date:
July 06, 2016
Filing Date:
January 17, 2013
Export Citation:
Assignee:
Purak Biochem B. Buoy.
International Classes:
C07C59/08; C07C51/48; C07C55/10
Domestic Patent References:
| JP2010539911A | ||||
| JP2003511360A |
Other References:
Krzyzaniak, A et al.,Extractant screening for liquid?liquid extraction in environmentally benign production routes,CHEMICAL ENGINEERING TRANSACTIONS,2011年,24,709-714
Janet A. Tamada et al.,Extraction of carboxylic acids with amine extractants. 1. Equilibria and law of mass action modeling,INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,1990年,29 (7),1319-1326
Janet A. Tamada et al.,Extraction of carboxylic acids with amine extractants. 1. Equilibria and law of mass action modeling,INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,1990年,29 (7),1319-1326
Attorney, Agent or Firm:
Mitsuo Matsui
Hiroshi Murakami
Hiroshi Murakami