Method for extracting lactic acid from aqueous suspensions

Details Method for extracting lactic acid from aqueous suspensions Method for extracting lactic acid from aqueous suspensions

2006-07-17

2010-06-15

Fortuna, Ana M (Department: 1797)

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

C210S660000, C562S589000, C562S580000, C426S425000, C426S429000, C426S431000

Reexamination Certificate

active

07736514

ABSTRACT:
The invention relates to a method for the continuous extraction of lactic acid from an aqueous suspension containing solids. According to said method, the aqueous suspension containing solids is brought into contact, in a counter-current, with an organic solvent that is partially miscible with water, in a column provided with filling agents which have a surface consisting of hydrophobic material, in such a way as to form an aqueous phase and an organic phase, such that the organic phase is guided as a dispersed phase in a section of the column comprising filling agents.

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Chahal, S.P., “Lactic Acid”, Ullmanns Encyclopedia of Industrial Chemistry, 2005, Wiley-VCH Verlag GmbH & Col. KGaA5. Aufl., Bd. A 15, 97-105, Weinheim, VCH.
Inskeep, Gordon C., et al., “Lactic Acid from Corn Sugar”, Industrial and Engineering Chemistry, 1952, p. 1955-1966, vol. 44, No. 9.
English Translation of International Preliminary Report on Patentability, PCT/EP2006/064324, issued Jan. 28, 2008.

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