GB1503843A - Process for separating weak acids from aqueous solutions - Google Patents
Process for separating weak acids from aqueous solutionsInfo
- 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
Links
- 239000002253 acid Substances 0.000 title abstract 8
- 239000007864 aqueous solution Substances 0.000 title abstract 3
- 150000007513 acids Chemical class 0.000 title abstract 2
- 238000000034 method Methods 0.000 title abstract 2
- 239000012528 membrane Substances 0.000 abstract 4
- 239000012466 permeate Substances 0.000 abstract 2
- 125000001931 aliphatic group Chemical group 0.000 abstract 1
- 235000014113 dietary fatty acids Nutrition 0.000 abstract 1
- 229930195729 fatty acid Natural products 0.000 abstract 1
- 239000000194 fatty acid Substances 0.000 abstract 1
- 150000004665 fatty acids Chemical class 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 150000007524 organic acids Chemical class 0.000 abstract 1
- 235000005985 organic acids Nutrition 0.000 abstract 1
- 238000011084 recovery Methods 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- 239000000243 solution Substances 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 239000003799 water insoluble solvent Substances 0.000 abstract 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/24—Dialysis ; Membrane extraction
- B01D61/246—Membrane 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.
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)
| 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)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ATE183661T1 (en) * | 1993-07-12 | 1999-09-15 | Aharon Eyal | METHOD FOR PRODUCING WATER SOLUBLE SALTS OF CARBOXYLIC ACIDS 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 |
-
1975
- 1975-12-21 IL IL48701A patent/IL48701A/en unknown
-
1976
- 1976-01-12 NL NL7600248A patent/NL7600248A/en not_active Application Discontinuation
- 1976-01-14 JP JP51003724A patent/JPS5196786A/ja active Pending
- 1976-01-14 IT IT19249/76A patent/IT1054213B/en active
- 1976-01-14 AU AU10269/76A patent/AU505335B2/en not_active Expired
- 1976-01-14 GB GB1322/76A patent/GB1503843A/en not_active Expired
- 1976-01-14 BE BE163493A patent/BE837545A/en unknown
- 1976-01-14 CA CA243,648A patent/CA1059923A/en not_active Expired
- 1976-01-14 DE DE19762601098 patent/DE2601098A1/en not_active Withdrawn
- 1976-01-14 FR FR7600882A patent/FR2297659A1/en active Granted
Cited By (1)
| 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 |
|---|---|
| BE837545A (en) | 1976-07-14 |
| AU1026976A (en) | 1977-07-21 |
| IL48701A0 (en) | 1976-02-29 |
| FR2297659A1 (en) | 1976-08-13 |
| FR2297659B1 (en) | 1982-11-26 |
| IT1054213B (en) | 1981-11-10 |
| NL7600248A (en) | 1976-07-19 |
| DE2601098A1 (en) | 1976-07-22 |
| AU505335B2 (en) | 1979-11-15 |
| IL48701A (en) | 1979-01-31 |
| CA1059923A (en) | 1979-08-07 |
| JPS5196786A (en) | 1976-08-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |