GB1503843A - Process for separating weak acids from aqueous solutions - Google Patents

Process for separating weak acids from aqueous solutions

Info

Publication number
GB1503843A
GB1503843A GB1322/76A GB132276A GB1503843A GB 1503843 A GB1503843 A GB 1503843A GB 1322/76 A GB1322/76 A GB 1322/76A GB 132276 A GB132276 A GB 132276A GB 1503843 A GB1503843 A GB 1503843A
Authority
GB
United Kingdom
Prior art keywords
acid
membrane
unionized
acids
jan
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB1322/76A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Monsanto Co
Original Assignee
Monsanto Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Monsanto Co filed Critical Monsanto Co
Publication of GB1503843A publication Critical patent/GB1503843A/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D61/00Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/24Dialysis ; Membrane extraction
    • B01D61/246Membrane extraction

Landscapes

  • Health & Medical Sciences (AREA)
  • Urology & Nephrology (AREA)
  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

1503843 Membrane separation of weak acids from solution MONSANTO CO 14 Jan 1976 [15 Jan 1975] 01322/76 Heading B1X A weak acid (i.e. with at least 1% of acid molecules undissociated) separated from an aqueous solution by contacting the aqueous feed with a first surface of a non-ionic, synthetic organic polymeric membrane selectively permeable to unionized acid molecules in the absence of a water-insoluble solvent, maintaining the second surface of the membrane at a lower chemical potential than the first by contacting the second surface with an aqueous solution sink (i.e. liquid sweep on permeate side) and permitting a portion of the unionized acid to permeate into and through the membrane to provide a mixture having a higher total concentration of acid moieties (calculated as unionized acid) than that of the aqueous feed. The process is envisaged for use in the recovery of water-soluble organic acids with PKa greater than 3, e.g. aliphatic and fatty acids.
GB1322/76A 1975-01-15 1976-01-14 Process for separating weak acids from aqueous solutions Expired GB1503843A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US54131675A 1975-01-15 1975-01-15

Publications (1)

Publication Number Publication Date
GB1503843A true GB1503843A (en) 1978-03-15

Family

ID=24159062

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1322/76A Expired GB1503843A (en) 1975-01-15 1976-01-14 Process for separating weak acids from aqueous solutions

Country Status (10)

Country Link
JP (1) JPS5196786A (en)
AU (1) AU505335B2 (en)
BE (1) BE837545A (en)
CA (1) CA1059923A (en)
DE (1) DE2601098A1 (en)
FR (1) FR2297659A1 (en)
GB (1) GB1503843A (en)
IL (1) IL48701A (en)
IT (1) IT1054213B (en)
NL (1) NL7600248A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6001255A (en) * 1993-07-12 1999-12-14 Eyal; Aharon Process for the production of water-soluble salts of carboxylic and amino acids

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995002716A1 (en) * 1993-07-12 1995-01-26 Aharon Eyal A process for the production of water-soluble salts of carboxylic and amino acids
US6086769A (en) * 1996-09-16 2000-07-11 Commodore Separation Technologies, Inc. Supported liquid membrane separation
JP2007075729A (en) * 2005-09-14 2007-03-29 Tama Tlo Kk Apparatus and method for separating and recovering oil-soluble substance

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6001255A (en) * 1993-07-12 1999-12-14 Eyal; Aharon Process for the production of water-soluble salts of carboxylic and amino acids

Also Published As

Publication number Publication date
JPS5196786A (en) 1976-08-25
IL48701A0 (en) 1976-02-29
IT1054213B (en) 1981-11-10
AU505335B2 (en) 1979-11-15
NL7600248A (en) 1976-07-19
DE2601098A1 (en) 1976-07-22
AU1026976A (en) 1977-07-21
IL48701A (en) 1979-01-31
FR2297659B1 (en) 1982-11-26
BE837545A (en) 1976-07-14
FR2297659A1 (en) 1976-08-13
CA1059923A (en) 1979-08-07

Similar Documents

Publication Publication Date Title
DE3166050D1 (en) Process for the extraction of organic acids from aqueous solution
DK268488D0 (en) PROCEDURE FOR THE EXTRACTION AND RECOVERY OF ACID FROM AN ACID AND SALTIC SOLUTION
RO88188B (en) Process for recovering rhodium and phosphine from used catalyst solutions
GB1368529A (en) Electrolytic separation in nuclear fuels
US5263409A (en) Membrane extraction of citrus bittering agents
CA2043152A1 (en) Production of citric acid
GB1276792A (en) Acetone purification process
GB1503843A (en) Process for separating weak acids from aqueous solutions
DE3562369D1 (en) Extraction of amino acid from aqueous mixtures
GB1278874A (en) Separation of components from a reaction product mixture of water, isobutyric acid and methacrylic acid
DE3768022D1 (en) CONTINUOUS PROCESS FOR THE EXTRACTION OF CARBONIC ACIDS, ALDEHYDES, KETONES, ALCOHOLS AND PHENOLS FROM DILUTED AQUEOUS SOLUTIONS.
DE58900701D1 (en) METHOD FOR RECOVERY OF RHODIUM.
DE3688240D1 (en) METHOD FOR REMOVING METAL IMPURITIES FROM SOLUTIONS.
GB1220770A (en) Process for the purification of lactic acid
ATE63739T1 (en) PROCESS FOR RECOVERING LOW MOLECULAR ALCOHOLS FROM AQUEOUS FERMENTATION MEDIUM.
GB1322444A (en) Process for separating methacrolein from a gaseous mixture cont aining it
GB1502562A (en) Membrane separation of weak bases from aqueous streams
GB1343193A (en) Method for purifying carboxylic acids
ATE15043T1 (en) PROCESS FOR RECOVERING CAFFEINE FROM ACTIVATED CHARCOAL.
EP0354243A4 (en) Process for concentrating and purifying alchohol.
ATE118470T1 (en) ISOLATION OF L-PHENYLALANINE FROM ITS RACE MIXTURES.
GB1280855A (en) Process for the recovery of metallic catalysts
TW338007B (en) Method and apparatus for recovering carboxylic acis from dilute solutions
Schubert et al. CONCENTRATION AND ANALYSIS OF PESTICIDES AND OTHER RECALCITRANT MOLECULES IN WATER SUPPLIES BY ULTRAFILTRATION(REVERSE OSMOSIS)
GB1324715A (en) Purification of p-aminophenol

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee