US3901806A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of aqueous liquors with uranyl ions
Assignee: Dow Chemical Co
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Filing: 1974-02-04
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Granted: 1975-08-26
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Expires: 1994-02-04
Abstract
Abstract Organic compounds present in an aqueous liquor are oxidized by mixing gaseous oxygen with liquor at a pH of about 3 to about 4.5 in the presence of a catalytic quantity of uranyl ions under irradiation by light ranging in wavelength from about 5800 to about 2000A to oxidize said organic materials into CO2, water, and lower weight organics. Cupric ions may be added to prevent the formation of a uranium-containing precipitate, which may occur during the oxidation of certain organic compounds.
Inventors
- 👤 Craig B Murchison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:34
CPC Classifications
A; A62; A62D; A62D3/00; A62D3/30; A62D3/38; A62D3/10; A62D3/17; A62D3/176; B; B01; B01J; B01J19/00; B01J19/08; B01J19/12; B01J19/122; B01J19/123; C; C02; C02F; C02F1/00; C02F1/30; C02F1/32; C02F1/72; C02F1/725; C02F11/00; C02F11/06; C02F11/08; A62D2101/00; A62D2101/20; A62D2101/28; A62D2203/00; A62D2203/04; Y; Y02; Y02W; Y02W10/00; Y02W10/30; Y02W10/37; Y10; Y10S; Y10S204/00; Y10S204/902; Y10S204/903; Y10S204/904; Y10S204/905
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
120 words
A PROCESS FOR OXIDIZING ORGANIC COMPOUNDS IN AN AQUEOUS LIQUOR WHEREIN AT LEAST CO2 IS PRODUCED AND WHEREIN SAID ORGANIC COMPOUNDS CONTAINS AN ELECTRON DONATING ATOM WHICH COMPRISES: MIXING GASEOUS OXYGEN WITH THE AQUEOUS LIQUOR WHILE THE PH OF SAID LIQUOR IS MAINTAINED IN THE RANGE OF 3 TO 4.5 IN THE PRESENCE OF A CATALYTIC QUANTITY OF URANYL IONS OF AT LEAST ABOUT 20 PPM WHILE SAID LIQUOR IS SUBJECTED TO LIGHT WAVES RANGING IN LENGTH FROM ABOUT 5800 TO ABOUT 2000A AT A TEMPERATURE RANGING FROM THE FREEZING POINT TO THE BOILING POINT OF SAID AQUEOUS LIQUOR AT ATMOSPHERIC PRESSURE AND REMOVING AT LEAST A MOJOR PORTION OF SAID PRODUCED CO2 THEREBY REDUCING THE TOC OF SAID LIQUID.
Claim 2
Dependent Claim
120 words
A PROCESS FOR OXIDIZING ORGANIC COMPOUNDS IN AN AQUEOUS LIQUOR WHEREIN AT LEAST CO2 IS PRODUCED AND WHEREIN SAID ORGANIC COMPOUNDS CONTAINS AN ELECTRON DONATING ATOM WHICH COMPRISES: MIXING GASEOUS OXYGEN WITH THE AQUEOUS LIQUOR WHILE THE PH OF SAID LIQUOR IS MAINTAINED IN THE RANGE OF 3 TO 4.5 IN THE PRESENCE OF A CATALYTIC QUANTITY OF URANYL IONS OF AT LEAST ABOUT 20 PPM WHILE SAID LIQUOR IS SUBJECTED TO LIGHT WAVES RANGING IN LENGTH FROM ABOUT 5800 TO ABOUT 2000A AT A TEMPERATURE RANGING FROM THE FREEZING POINT TO THE BOILING POINT OF SAID AQUEOUS LIQUOR AT ATMOSPHERIC PRESSURE AND REMOVING AT LEAST A MOJOR PORTION OF SAID PRODUCED CO2 THEREBY REDUCING THE TOC OF SAID LIQUID.
Claim 3
Dependent Claim
32 words
The process of claim 1 wherein the liquor additionally contains solubilized cupric ions in a concentration sufficient to prevent the formation of a uranium-containing precipitate, said concentration being at least 10 ppm.
Claim 4
Dependent Claim
19 words
The process of claim 1 wherein the concentration of uranyl ion ranges from about 200 to about 2000 ppm.
Claim 5
Dependent Claim
19 words
The process of claim 1 wherein the wavelength of the light waves ranges from about 4500 to about 3000A.
References Cited (Backward Citations)
US3819516A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-08-25 | 1979-02-24 | 1979-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-25 | 1983-02-24 | 1983-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-25 | 1987-02-24 | 1987-08-26 | $7700.00 | Window Closed / Lapsed |