US3617546A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removal of organic compounds by liquid membrane
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1970-04-13
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Granted: 1971-11-02
•
Expires: 1990-04-13
Abstract
Abstract Organic compounds are removed from waste water streams by treatment with an emulsion of aqueous droplets containing a reagent coated by an organic liquid membrane containing surfactants through which the organic compounds in waste water will permeate and react in the aqueous droplets to form new chemical compounds and from which they can be recovered eventually by flashing off or emulsion breakup. The formation of new chemical compounds in the aqueous droplets prevents the organic compounds from permeating out of the emulsion. In a preferred embodiment of the invention phenol is removed from waste water streams.
Inventors
- 👤 Norman N Li
- 👤 Robert P Cahn
- 👤 Adam L Shrier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:17
CPC Classifications
C; C10; C10G; C10G21/00; B; B01; B01D; B01D61/00; B01D61/38; B01D61/40; C02; C02F; C02F1/00; C02F1/26; C02F1/66
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
12 words
The process of claim 1 wherein said solution is an aqueous solution.
Claim 2
Dependent Claim
14 words
The process of claim 1 wherein said solution contains phenol as the organic compound.
Claim 3
Dependent Claim
12 words
The process of claim 1 wherein said second compound is a base.
Claim 4
Dependent Claim
12 words
The process of claim 1 wherein said second compound is sodium hydroxide.
Claim 5
Dependent Claim
14 words
The process of claim 1 wherein said surfactant is a long chain fatty ester.
Claim 6
Dependent Claim
114 words
A process for separating phenols from an aqueous solution which comprises passing said solution into a contacting zone where it is contacted with an emulsion comprising droplets of a mixture comprising a base capable of reacting with said phenols, said droplets being coated in the emulsion with a liquid surfactant containing membrane, said liquid surfactant being immiscible with said solutions containing the phenols and said mixture containing the base, said membrane being permeable to said phenols, passing at least a portion of said phenols through said liquid membrane to react with said base to form a phenol salt compound towards which said membrane is substantially nonpermeable and recovering a solution depleted in said phenols.
Claim 7
Dependent Claim
11 words
The process of claim 7 wherein said surfactant is sorbitol mono-oleate.
Claim 8
Dependent Claim
11 words
The process of claim 7 wherein said base is sodium hydroxide.
Claim 9
Dependent Claim
18 words
The process of claim 7 wherein said droplets have a diameter of 10 1 to 10 5 inch.
Claim 10
Dependent Claim
15 words
The process of claim 7 wherein said mixture has a pH of at least 10.
Claim 11
Dependent Claim
13 words
The process of claim 7 wherein said surfactant contains a strong polar group.
Claim 12
Dependent Claim
11 words
The process of claim 7 wherein said surfactant is oil soluble.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-01 | 1975-05-03 | 1975-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-01 | 1979-05-03 | 1979-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-01 | 1983-05-03 | 1983-11-02 | $7700.00 | Window Closed / Lapsed |