US4477357A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Detoxification of substances by utilization of ultrasonic energy
Assignee: HAZARDOUS WASTE MANAGEMENT Inc A DE CORP
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Filing: 1983-09-06
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Granted: 1984-10-16
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Expires: 2003-09-06
Abstract
Abstract Process for detoxifying liquid and perverulant solid material by the application of ultrasonic energy to the material in the presence of an alkaline agent and preferably in the additional presence of a wetting agent.
Inventors
- 👤 Marcus Sittenfield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:04
CPC Classifications
A; A62; A62D; A62D3/00; A62D3/10; A62D3/13; B; B01; B01J; B01J19/00; B01J19/08; B01J19/10; B09; B09C; B09C1/00; C; C02; C02F; C02F1/00; C02F1/34; C02F1/36; A62D2101/00; A62D2101/20; A62D2101/22; A62D2101/28
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
73 words
A method of removing undesirable halogenated aromatic compounds from a liquid or perverulent solid material which comprises applying ultrasonic radiation to said material in the presence of an alkaline agent in admixture with the material, said alkaline agent being present in the mixture in an amount that is at least as great as the halogen equivalent of said material, and said radiation being applied in sufficient amount to cause cavitation in the mixture.
Claim 2
Independent Claim
73 words
A method of removing undesirable halogenated aromatic compounds from a liquid or perverulent solid material which comprises applying ultrasonic radiation to said material in the presence of an alkaline agent in admixture with the material, said alkaline agent being present in the mixture in an amount that is at least as great as the halogen equivalent of said material, and said radiation being applied in sufficient amount to cause cavitation in the mixture.
Claim 3
Dependent Claim
25 words
The method of claim 1 wherein, the radiation is effected in the additional presence in the mixture of an effective amount of a wetting agent.
Claim 4
Dependent Claim
25 words
The method of claim 1 wherein the wetting agent is present in the mixture in a concentration of between about 0.01 to 0.1 weight percent.
Claim 5
Dependent Claim
12 words
The method of claim 1 wherein the alkaline agent is calcium hydroxide.
Claim 6
Independent Claim
55 words
A method of detoxifying oil containing toxic halogenated aromatic compounds which comprises adding to the oil an amount of an alkaline agent that is at least as great as the halogen equivalent in the oil and then subjecting said mixture of oil and alkaline agent to sufficient ultrasonic radiation to cause cavitation in the mixture.
Claim 7
Independent Claim
55 words
A method of detoxifying oil containing toxic halogenated aromatic compounds which comprises adding to the oil an amount of an alkaline agent that is at least as great as the halogen equivalent in the oil and then subjecting said mixture of oil and alkaline agent to sufficient ultrasonic radiation to cause cavitation in the mixture.
Claim 8
Dependent Claim
17 words
The method of claim 5 wherein said mixture also contains an effective amount of a wetting agent.
Claim 9
Independent Claim
84 words
A method of detoxifying soil containing toxic halogenated aromatic compounds which comprises adding a sufficient amount of water to the soil to form an aqueous slurry, adding an alkaline agent in an amount that is at least as great as the halogen equivalent in the soil to form an aqueous suspension, subjecting the suspension to sufficient ultrasonic radiation to cause cavitation therein, whereby an effluent is formed containing decontaminated soil, removing the soil from the aqueous phase, and washing and drying the decontaminated soil.
Claim 10
Independent Claim
84 words
A method of detoxifying soil containing toxic halogenated aromatic compounds which comprises adding a sufficient amount of water to the soil to form an aqueous slurry, adding an alkaline agent in an amount that is at least as great as the halogen equivalent in the soil to form an aqueous suspension, subjecting the suspension to sufficient ultrasonic radiation to cause cavitation therein, whereby an effluent is formed containing decontaminated soil, removing the soil from the aqueous phase, and washing and drying the decontaminated soil.
Claim 11
Dependent Claim
25 words
The method of claim 7 wherein an effective amount of a wetting agent is added to the aqueous slurry prior to subjection to the radiation.
References Cited (Backward Citations)
US4144152A
Cited
US4340488A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-10-16 | 1988-04-16 | 1988-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-10-16 | 1992-04-16 | 1992-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-10-16 | 1996-04-16 | 1996-10-16 | $7700.00 | Window Closed / Lapsed |