US4416810A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disposal of radioactive aromatic liquid wastes
Assignee: CARLO ENVIRONMENTAL TECHNOLOGIES Inc
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Filing: 1981-07-30
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Granted: 1983-11-22
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Expires: 2001-07-30
Abstract
Abstract This invention relates to a method for the encapsulation in a cement mixture of the organic liquid radioactive waste comprising an aromatic liquid and an organic fluor, generated from the use of liquid scintillation counting (LSC).
Inventors
- 👤 John E. Noakes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:24
CPC Classifications
G; G21; G21F; G21F9/00; G21F9/04; G21F9/06; G21F9/16; G21F9/162; G21F9/165
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
130 words
A process for solidifying radioactive wastes comprising an aromatic liquid and an organic fluor, comprising the steps of: (1) making a dispersion of the waste and water, in which at least half of the dispersion by volume is water, at least 3% of the dispersion by volume is a surfactant, and the continuous phase is water (2) mixing the thus-formed dispersion with Portland cement so that for every 100 parts by weight of cement, there is between 30 and 40 parts by weight of water, said water being from the dispersion (3) casting the thus-formed mixture into suitable containers and allowing it to set up (4) transporting the set-up cement-like mixture to a suitable disposal site and (5) leaving the set-up cement-like mixture at the disposal site for permanent disposal.
Claim 2
Dependent Claim
130 words
A process for solidifying radioactive wastes comprising an aromatic liquid and an organic fluor, comprising the steps of: (1) making a dispersion of the waste and water, in which at least half of the dispersion by volume is water, at least 3% of the dispersion by volume is a surfactant, and the continuous phase is water (2) mixing the thus-formed dispersion with Portland cement so that for every 100 parts by weight of cement, there is between 30 and 40 parts by weight of water, said water being from the dispersion (3) casting the thus-formed mixture into suitable containers and allowing it to set up (4) transporting the set-up cement-like mixture to a suitable disposal site and (5) leaving the set-up cement-like mixture at the disposal site for permanent disposal.
Claim 3
Dependent Claim
32 words
The process of claim 1 in which between 10 and 20 parts by weight of an activated carbon black is added to the mixture for every 100 parts by weight Portland cement.
Claim 4
Dependent Claim
21 words
The process of claim 1 in which surfactant concentration is in the range of 2% to 10% of the dispersion volume.
Claim 5
Dependent Claim
26 words
A stable, leach proof cement-like product made in accordance with the process of claim 1, said product having a compressive strength of at least 2000 psi.
Claim 6
Dependent Claim
118 words
A process of encapsulating aromatic radioactive wastes comprising an aromatic liquid and an organic fluor, comprising the steps of mixing the wastes with water to form an unstable dispersion wherein water is the continuous phase and comprises at least one half of the dispersion by volume; mixing the thus-formed dispersion with Portland cement whereby 30 and 40 parts by weight of water is present in the mixture from the dispersion for every 100 parts by weight of cement; and allowing the mixture to set up, such mixture immediately setting up on mixing by interaction of the cement and continuous phase of the dispersion, leaving a dispersed waste uniformly distributed throughout the cement-like mixture which hardens within six hours.
Claim 7
Dependent Claim
118 words
A process of encapsulating aromatic radioactive wastes comprising an aromatic liquid and an organic fluor, comprising the steps of mixing the wastes with water to form an unstable dispersion wherein water is the continuous phase and comprises at least one half of the dispersion by volume; mixing the thus-formed dispersion with Portland cement whereby 30 and 40 parts by weight of water is present in the mixture from the dispersion for every 100 parts by weight of cement; and allowing the mixture to set up, such mixture immediately setting up on mixing by interaction of the cement and continuous phase of the dispersion, leaving a dispersed waste uniformly distributed throughout the cement-like mixture which hardens within six hours.
References Cited (Backward Citations)
FR625756A
Cited
GB1414073A
Cited
DE2356253A1
Cited
DE2827030A1
Cited
JPS5445499A
Cited
JPS5595899A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-11-21 | 1987-05-23 | 1987-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-21 | 1991-05-23 | 1991-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-21 | 1995-05-23 | 1995-11-22 | $7700.00 | Window Closed / Lapsed |