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US4443309A
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Process for the detoxification of chemical waste materials
Assignee: Nederlandse Organisatie voor Toegepast Natuurwetenschappelijk Onderzoek TNO
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Filing: 1981-11-05
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Granted: 1984-04-17
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Expires: 2001-11-05
Abstract
Abstract A process for the detoxification of chemical waste materials comprising toxic organic compounds in which the waste materials are subjected to electrolytical treatment by contacting them with one or more electrodes, which are part of an electric circuit, in the presence of a micelle-forming material, the anode being made of titanium or lead dioxide, the cathode being made of lead, or both being made of carbon fibers; the process being especially suitable for removing halogenated hydrocarbons from chemical waste materials.
Inventors
- 👤 Pieter J. Van Duin
- 👤 Joost van Erkel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:57
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/46; C02F1/461; C02F2101/00; C02F2101/30; C02F2101/36
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
46 words
A process for the detoxification of chemical waste materials containing toxic organic compounds, in which substantially all the waste materials are subjected to electrolysis by contacting them with one or more electrodes, which are part of an electric circuit, in the presence of a micelle-forming material.
Claim 2
Dependent Claim
46 words
A process for the detoxification of chemical waste materials containing toxic organic compounds, in which substantially all the waste materials are subjected to electrolysis by contacting them with one or more electrodes, which are part of an electric circuit, in the presence of a micelle-forming material.
Claim 3
Dependent Claim
20 words
A process according to claim 1, wherein the quantity of micelle-forming material amounts to 1-100 ppm of the waste material.
Claim 4
Dependent Claim
39 words
A process according to claim 1, wherein the micelle-forming material is a member of the group consisting of methyldodecylbenzyltrimethylammoniumchloride, methyldodecylxylylene-bistrimethylammoniumchloride, octadecyltrimethylammoniumchloride, sodium dodecylbenzenesulfonate, sodium dioctyl sulfosuccinate, sodium perfluoroalkylbenzenesulfonate, octylphenoldecaethyleneglycol ether and mixtures of at least two of these compounds.
Claim 5
Dependent Claim
15 words
A process according to claim 1, wherein the waste material is passed along the anode.
Claim 6
Dependent Claim
18 words
A process according to claim 4, characterized in that the anode is made of titanium or lead dioxide.
Claim 7
Dependent Claim
15 words
A process according to claim 1, wherein the waste material is passed along the cathode.
Claim 8
Dependent Claim
13 words
A process according to claim 6, wherein the cathode is made of lead.
Claim 9
Dependent Claim
19 words
A process according to claim 1, wherein the waste material is passed along both the cathode and the anode.
Claim 10
Dependent Claim
20 words
A process according to any one of claims 4, 6 and 8, wherein the electrode is made of carbon fibers.
Claim 11
Dependent Claim
40 words
A process according to claim 1, wherein the toxic organic compounds are halogenated hydrocarbons which are a member of the group consisting of halogenated aromatic compounds, aliphatic compounds, phenolic compounds, aniline compounds and ethers and halocyanides and their sulfonated products.
Claim 12
Dependent Claim
20 words
A process according to claim 10, wherein the quantity of halogenated hydrocarbon amounts to 1-10 5 ppm of waste material.
Claim 13
Dependent Claim
14 words
A process according to claim 1, wherein the toxic organic compounds contain nitro groups.
Claim 14
Dependent Claim
18 words
A process according to claim 1, wherein the waste materials are circulated through at least one electrode compartment.
References Cited (Backward Citations)
US3766035A
Cited
US3816275A
Cited
US3959131A
Cited
US4104159A
Cited
GB1570122A
Cited
EP0010562A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-04-17 | 1987-10-17 | 1988-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-04-17 | 1991-10-17 | 1992-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-04-17 | 1995-10-17 | 1996-04-17 | $7700.00 | Window Closed / Lapsed |