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5681130 |
Active cooling-based surface confinement system for thermal soil treatment
A thermal barrier is disclosed for surface confinement with active cooling to control subsurface pressures during thermal remediation of shallow (5-20 feet) underground contaminants. If steam...
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5678231 |
Methods of decontaminating substates with in-situ generated cyanides
Solid and liquid substrates, such as soil and solvents having radioactive metals or hazardous non-radioactive metals are decontaminated with the aid of cyanide ion generated in-situ to form...
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5676819 |
In situ removal of contamination from soil
A process of remediation of cationic heavy metal contamination from soil utilizes gas phase manipulation to inhibit biodegradation of a chelating agent that is used in an electrokinesis process to...
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5678230 |
Disposable media filter
A filter for removing hazardous particulate matter from an aqueous flow. The filter includes a rigid support housing having an input port for the aqueous flow, an exit port for the aqueous flow, a...
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5678232 |
Lead decontamination method
The present invention provides a method of decontaminating an article containing lead contaminated with radioactive material. The method includes contacting the article containing lead contaminated...
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5640703 |
Treatment of solid wastes
A process for the treatment of solid waste material which is or is suspected to be contaminated with plutonium or compounds thereof with or without other hazardous contaminants, which process...
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5640702 |
Method of and system for treating mixed radioactive and hazardous wastes
There is disclosed an improved method and system for the selective treatment and volume reduction of mixtures of gaseous, liquid and solid contaminated waste materials. The contaminated waste...
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5640701 |
Method for remediating soil containing radioactive contaminants
Soil comprising small soil particles, clay and silt particles, humus, fine vegetation, and contaminated with soluble or insoluble radioactive species is treated by first introducing an aqueous...
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5634982 |
Process for decontaminating surfaces of nuclear and fissile materials
The present invention provides a process for decontaminating a surface of nuclear or fissile materials or both. The process includes impacting ortho-boric acid crystals onto the surface. The...
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5613239 |
Method and apparatus for decomposing organic solutions composed of chelating solutions and/or organic acids containing radioactive metal ions and collection method and apparatus using the same
A solution composed of a chelating solution and/or an organic acid is applied to radioactive metals to form a radioactive metal solution. The metal solution is increased in its electrical...
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5613238 |
Methods of decontaminating soils containing hazardous metals
Soil including sand and clays contaminated with nuclear waste materials and/or ions of hazardous non-radioactive metals or metalloids are decontaminated by treating with anhydrous liquid ammonia...
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5597728 |
Methods for biodegradation separation of natural fibers to release particulate contamination
A method is presented for releasing petroleum and hydrocarbon products sorbed onto or entrained by natural fibers in an aqueous medium through the use of enzymes to degrade the natural fiber...
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5570468 |
Method and apparatus for decontaminating substances contaminated with radioactivity
A method of effectively decontaminating a substance contaminated with radioactivity, in particular, shot blasting grit contaminated with radioactivity, and a decontaminating apparatus which makes...
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5545794 |
Method for decontamination of radioactive metal surfaces
Disclosed is a method for removing radioactive contaminants from metal surfaces by applying steam containing an inorganic acid and cerium IV. Cerium IV is applied to contaminated metal surfaces by...
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5538701 |
Process to remove actinides from soil using magnetic separation
A process of separating actinide-containing components from an admixture including forming a slurry including actinide-containing components within an admixture, said slurry including a...
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5523514 |
Process for dissolving plutonium and/or other radioactive elements present in solid or liquid products
The invention relates to the dissolving of plutonium and/or other radioactive elements in an aqueous solution by microwave heating. According to the invention, solid or liquid products containing...
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5523513 |
Decontamination processes
A method of decontaminating the surface of a body carrying radioactive contaminants which comprises treating the surface with a decontaminant comprising a solution of tetrafluoroboric acid HBF 4 ,...
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5516968 |
Methods of decontaminating mercury-containing soils
Soil including sand and clays contaminated with elemental mercury are decontaminated by forming slurries with anhydrous liquid ammonia. An ammoniacal liquid, such as anhydrous liquid ammonia...
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5495062 |
Methods of decontaminating nuclear waste-containing soil
Soil including sand and clays contaminated with nuclear waste materials are decontaminated by treating with anhydrous liquid ammonia alone or in combination with solvated electrons. Methods...
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5489735 |
Decontamination composition for removing norms and method utilizing the same
A decontamination composition comprises 40 to 60 percent of a compound selected from the group consisting of oxalic acid, alkali metal and ammonium salts of oxalic acid and mixtures thereof; 5 to...
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5489734 |
Method for producing a non-radioactive product from a radioactive waste
A method is disclosed for producing a non-radioactive product from a radioactive waste composition that includes a radioactive component and a non-radioactive component. The method includes...
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5489736 |
Treatment of solid organic wastes
A process for the treatment of material which is or is suspected to be contaminated with one or more actinides or compounds thereof, which process includes contacting the said material with a...
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5463163 |
Process for absorbing toxic waste for long term permanent storage
A process for absorbing liquid and solid toxic waste in an agglomerate using asbestos, rock wool and the like as a sponge material. The toxic waste is mixed with the sponge material in a...
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5453562 |
Process for removing volatile components from soils and sludges contaminated with hazardous and radioactive materials
The present invention relates to a method for separating chemical contaminants such as volatile and semi-volatile chemicals and polychlorinated biphenyls (PCBs), even if the contaminants are...
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5449505 |
Method for disposing of radioactive graphite and silicon carbide in graphite fuel elements
Method for destroying radioactive graphite and silicon carbide in fuel elements containing small spheres of uranium oxide coated with silicon carbide in a graphite matrix, by treating the graphite...
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5436384 |
Process for the remediation of contaminated particulate material
A method for segregating fines from the clean coarse fraction of the soil, preparing the contaminated fines for subsequent processing, and then separating the contaminants from the clean fines. The...
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5434331 |
Removal of radioactive or heavy metal contaminants by means of non-persistent complexing agents
A process for the decontamination of solid surfaces contaminated with radioactive or heavy metal species using a solution based on one or more non-persistent complexing agents, or for the chemical...
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5434332 |
Process for removing hazardous, toxic, and radioactive wastes from soils, sediments, and debris
A process for reducing the levels of contaminants in soils, sediments and debris comprised of an immersion of the soils, sediments and debris in a solvent, and the full drainage of the solvent from...
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5427247 |
Method for mobilization of hazardous metal ions in soils
A microbial process for removing heavy metals such as bismuth, cadmium, lead, thorium, uranium and other transuranics from soils and sediments, utilizing indigenous, or isolates of indigenous,...
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5416257 |
Open frozen barrier flow control and remediation of hazardous soil
Treatment of flowable underground contaminants comprises freezing at least one open underground barrier volume to form a wall (10) near the contaminated region (12) in the ground (14), where the...
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5414195 |
System and method for on-line monitoring and control of heavy metal contamination in soil washing process
The concentrations of residual heavy metal contaminants in the particulate material in a slurry produced in a particulate material washing process are monitored on-line and can be used to control...
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5414196 |
Method of decontaminating a cementitious surface
A cementitious surface contaminated with a radioactive substance is decontaminated by applying a micro-organism to the surface to degrade the surface. The residue which contains the radioactive...
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5411149 |
Aqueous biphasic extraction process with pH and particle control
A process for aqueous biphasic extraction of metallic oxides and the like from substances containing silica. Control of media pH enables efficient and effective partition of mixture components. The...
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5386077 |
Method for removing radioactive scale from fluid carrying equipment
A method for removing radioactive barium sulphate from fluid carrying equipment includes immersing the equipment and scale in liquid nitrogen or other cyrogenic liquid, followed by immersing the...
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5336450 |
Process to remove rare earth from IFR electrolyte
The invention is a process for the removal of rare earths from molten chloride electrolyte salts used in the reprocessing of integrated fast reactor fuel (IFR). The process can be used either...
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5324485 |
Microwave applicator for in-drum processing of radioactive waste slurry
A microwave applicator for processing of radioactive waste slurry uses a waveguide network which splits an input microwave of TE 10 rectangular mode to TE 01 circular mode. A cylindrical body has...
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5302324 |
Method for decontaminating substances contaminated with radioactivity, and method for decontaminating the materials used for said decontamination
Applying shotblast or sandblast to a substance contaminated with radioactivity, cleaning the substance with a liquid, washing the grit of shotblast or sandblast with an organic solvent, filtering...
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5284605 |
Method of treating gas based on electrolytic fluorine containing uranium compounds
A method of treating a gas based on fluorine and containing hydrofluoric acid, and which may optionally contain condensable gaseous compounds, especially uranium compounds, and non-condensable...
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5283010 |
Tritium removal
Where a concrete structure (12) has been contaminated with tritium (whether as gas or as water) the tritium atoms take the place of ordinary hydrogen atoms in water and in hydroxyl groups in the...
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5266494 |
Bench scale treatability method for evaluation of soil washing
A process for determining the suitability of soil washing for various types of soils, sludges and other solids is disclosed. The process may be applied to relatively small soil samples which have...
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5223181 |
Process for selectively concentrating the radioactivity of thorium containing magnesium slag
Magnesium is separated from magnesium slag containing radioactive thorium and its daughters by solubilizing magnesium from magnesium slurry using carbon dioxide and separating magnesium from...
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5126077 |
Radioactive decontamination method using methylene chloride
A radioactive decontamination method for decontaminating a radioactive-contaminated object by using methylene chloride in place of conventionally used hydrocarbon fluoride or perchloroethylene. The...
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5076971 |
Method for enhancing alpha decay in radioactive materials
Apparatus and method for decontaminating radioactive materials by stimulating the atomic system of radioactive materials. The stimulus is kept applied to the radioactive materials for a...
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4980092 |
Method for the destruction of chemically stable waste
A method for the destruction of chemical stable waste by pyrolysis whereby heat is applied to the waste using at least one plasma torch formed of non-transferred arc plasma type. The waste...
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4897222 |
Transportable press for a high condensability of radioactive waste material of nuclear power stations and process for condensing the same
A hydraulically operated transportable press for compressing radioactive waste materials collected within containers includes a matrix formed of two closable and openable cups receiving a waste...
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4882093 |
Process and installation for the treatment of solid organic waste contaminated by tritium
The invention relates to a process and an installation for the treatment of tritium-contaminated, solid organic waste. The waste is contacted with the steam in enclosure (1) for extracting the...
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4741866 |
Process for disposing of radioactive wastes
Ion exchange resin wastes are prepared for disposal by dewatering and/or dehydrating the resins, sealing the pores and recovering the ion exchange resins having radioactive waste products trapped...
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4654171 |
Process and apparatus for confining the pollution of an isostatic pressing enclosure
Process and apparatus for confining the pollution of an isostatic pressing enclosure. At the end of an isostatic pressing operation, a glove box is sealingly fixed above the enclosure, the plug is...
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4277363 |
Method for processing a mixture of air and rare gases, especially xenon and krypton
The method for processing a mixture of air and rare gases consisting especially of xenon and krypton which are at least partially radioactive and especially for processing gaseous effluents arising...
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4269728 |
Method for storing spent nuclear fuel in repositories
A method for storing radioactive spent fuel in repositories containing sulfur as the storage medium is disclosed. Sulfur is non-corrosive and not subject to radiation damage. Thus, storage periods...
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