US4345983A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for disposal of chemical waste
Assignee: Queen's University
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Filing: 1981-05-21
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Granted: 1982-08-24
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Expires: 2001-05-21
Abstract
Abstract A process for the safe and efficient disposal of toxic chlorinated hydrocarbon waste materials in which the chlorinated hydrocarbon is brought into close surface contact with a finely divided para- or ferromagnetic material, such as a fluidized bed of iron powder, in the presence of high intensity microwave radiation, so as to effect an electron transfer reaction which yields chloride anions, which subsequently react with the iron to form ferrous chloride, and an organic radical which is readily oxidized, in the presence of gaseous oxygen, to carbon dioxide and water.
Inventors
- 👤 Jeffrey K. S. Wan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:12
CPC Classifications
A; A62; A62D; A62D3/00; A62D3/30; A62D3/38; A62D3/10; A62D3/17; A62D3/178; B; B01; B01J; B01J19/00; B01J19/08; B01J19/12; B01J19/122; B01J19/126; B01J8/00; B01J8/18; B01J8/24; B01J8/42; A62D2101/00; A62D2101/20; A62D2101/22; A62D2101/28; A62D2203/00; A62D2203/04
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
78 words
A process for disposal of chlorinated hydrocarbons comprising: effecting intimate contact between a para- or ferromagnetic material surface and a solid or liquid phase chlorinated hydrocarbon; subjecting said intimately contacted surface to microwave radiations in the range 1.5-3 GHz so as to generate a high intensity oscillating electrical field at said surface and so as to produce, in the presence of a free oxygen containing gas, chloride ions and oxidation products of organic moieties of said chlorinated hydrocarbons.
Claim 2
Dependent Claim
78 words
A process for disposal of chlorinated hydrocarbons comprising: effecting intimate contact between a para- or ferromagnetic material surface and a solid or liquid phase chlorinated hydrocarbon; subjecting said intimately contacted surface to microwave radiations in the range 1.5-3 GHz so as to generate a high intensity oscillating electrical field at said surface and so as to produce, in the presence of a free oxygen containing gas, chloride ions and oxidation products of organic moieties of said chlorinated hydrocarbons.
Claim 3
Dependent Claim
73 words
A process for disposal of chlorinated hydrocarbons comprising: adsorbing a solid or liquid phase chlorinated hydrocarbon onto a finely divided para- or ferromagnetic material surface; subjecting said material surface with adsorbed said chlorinated hydrocarbon to microwave radiations in the range 1.5-3 GHz so as to generate a high intensity oscillating electrical field and so as to produce, in the presence of a free oxygen-containing gas, chloride ions and oxidation products of organic moieties.
Claim 4
Dependent Claim
73 words
A process for disposal of chlorinated hydrocarbons comprising: adsorbing a solid or liquid phase chlorinated hydrocarbon onto a finely divided para- or ferromagnetic material surface; subjecting said material surface with adsorbed said chlorinated hydrocarbon to microwave radiations in the range 1.5-3 GHz so as to generate a high intensity oscillating electrical field and so as to produce, in the presence of a free oxygen-containing gas, chloride ions and oxidation products of organic moieties.
Claim 5
Dependent Claim
23 words
A process as claimed in claim 1 wherein said intimately contacted surface is formed in a fluidized bed of finely divided said material.
Claim 6
Dependent Claim
20 words
A process as claimed in claim 1 or 2 wherein said ferromagnetic material is a fluidized bed of iron powder.
Claim 7
Dependent Claim
23 words
A process as claimed in claim 1 or 2 wherein said ferromagnetic material is iron and said free oxygen containing gas is oxygen.
Claim 8
Dependent Claim
32 words
A process as claimed in claim 1 or 2 wherein said chlorinated hydrocarbon is an aromatic chlorinated hydrocarbon selected from the group consisting of poly chlorinated biphenyls and precursors and metabolites thereof.
Claim 9
Dependent Claim
25 words
A process as claimed in claim 1 or 2 wherein said chloride anions react with said material so as to form a water soluble chloride.
Claim 10
Dependent Claim
28 words
A process as claimed in claim 1 or 2 wherein said material is iron powder and wherein said chloride anions react therewith so as to form ferrous chloride.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-08-23 | 1986-02-22 | 1986-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-08-23 | 1990-02-22 | 1990-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-08-23 | 1994-02-22 | 1994-08-24 | $7700.00 | Window Closed / Lapsed |