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8182754 |
Plasma apparatus for termination of radioactive and other wasters
The apparatus is proposed for termination of radioactive and other wastes particularly for physical processing of radioactive waste with simultaneous production of hydrogen, oxygen, and electric...
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8158088 |
Extractant compositions for co-extracting cesium and strontium, a method of separating cesium and strontium from an aqueous feed, and calixarene compounds
A mixed extractant solvent that includes at least one dialkyloxycalix[4]arenebenzocrown-6 compound, 4′,4′,(5′)-di-(t-butyldicyclohexano)-18-crown-6, at least one modifier, and, optionally, a dilue...
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8123939 |
Collection can for precipitated powder substance and the use thereof
A collection process for precipitated powder substance is mainly for storing toxic or highly radioactive powder or dust in air and involves collection operation in water or other liquid to collect...
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8115045 |
Nuclear waste removal system and method using wet oxidation
Methods for removing nuclear waste from a component are provided. In one embodiment, the method includes the steps of supplying oxalic acid to the nuclear waste on the component to form an oxalic...
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8097765 |
Method of decontaminating radioisotope-contaminated surface vicinity region by use of nonthermal laser peeling without re-melting, without re-diffusion and without re-contamination, and apparatus therefor
Parts, structural components, etc. that have their surfaces contaminated by radioisotopes in the accelerators, nuclear reactors, RI product manufacturing factories, nuclear fuel factories, nuclear...
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8080162 |
Method for separating fission product, and apparatus used therefor
Provided is a method that can remove fission products in a spent electrolyte produced in a dry reprocessing process by an easy operation and can vitrify the fission products easily, the fission...
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8067660 |
Method and system for restraining a chemical discharge
A method for restraining a chemical discharge comprising (a) deploying a binding agent into a receptacle containing a hazardous material in a liquid state upon the occurrence of at least one...
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8067659 |
Method of removing radioactive materials from a submerged state and/or preparing spent nuclear fuel for dry storage
A system, apparatus and method of processing and/or removing radioactive materials from a body of water that utilizes the buoyancy of the water itself to minimize the load experienced by a crane...
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8053622 |
Stripping method
The invention describes a method for stripping alumina which is particularly suitable for removal of fluoride from alumina and comprises washing said alumina with an aqueous acid or alkali at...
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8003845 |
Process for the complete combustion and oxidation of the mineral fraction of waste treated in direct incineration-vitrification apparatus
The invention concerns a process enabling the complete combustion and oxidation of the mineral fraction of combustible waste contained in an apparatus intended to treat waste by direct...
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7968064 |
Method for extraction of metals by methyliminobisalkylacetamide
The present invention provides a method for extraction of metals selected from Cr, Mo, Pd, Tc, W, Re, and Pu using a new extractant of methyliminobisalkylacetamide represented by a formula (I):...
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7927566 |
Extraction of radionuclides by crown ether-containing extractants
The present invention relates to a treatment of high-level waste of radiochemical production containing radionuclides and macro-admixtures including sodium. The method of extraction of...
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7857940 |
Liquid radioactive waste treatment system
The present invention relates to a liquid radioactive waste treatment system. The liquid radioactive waste treatment system includes a plurality of evaporation plates and each of the evaporation...
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7737320 |
Composition suitable for decontaminating a porous surface contaminated with cesium
A method of decontaminating porous surfaces contaminated with water soluble radionuclides by contacting the contaminated porous surfaces with an ionic solution capable of solubilizing radionuclides...
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7666370 |
Sodium salt recycling process for use in wet reprocessing process of spent nuclear fuel
The present disclosure relates to a process for recycling a sodium salt by decomposition of a sodium nitride liquid waste, comprising a neutralization step in which a nitric acid liquid waste or an...
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7622627 |
System and method for chemical decontamination of radioactive material
A system for chemically decontaminating radioactive material.
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7619222 |
Automatic radioactivity analyzer of mixed liquid beta emitter
The present invention relates to an automatic radioactivity analyzer of mixed liquid beta emitter which comprises: a sample preparation part (1, 2, 3, 4, 5, 6, and 7) for extracting a liquid sample...
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7563939 |
Method for treating radioactive waste water
A method and apparatus for treating radioactive waste water containing contaminating ions, colloids and suspended solids having like (usually negative) charges preventing their precipitation. An...
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7518028 |
Radiation shields and techniques for radiation shielding
Radiation shields and techniques for radiation shielding are provided. Bitumen substances, such as asphalt or tar, are mixed with radioactive waste, leaded glass, or a radioactive waste and leaded...
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7470330 |
Method for dissolving oilfield scale
A method of removing metal scale from surfaces that includes contacting the surfaces with a first aqueous solution of a chelating agent, allowing the chelating agent to dissolve the metal scale,...
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7323613 |
Method and installation for the treatment of radioactive wastes
The invention relates to a method and system for the treatment of radioactive wastes produced as a consequence of the operation of nuclear power plants with pressurized water reactors and boron...
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7291316 |
Cesium and strontium extraction using a mixed extractant solvent including crown ether and calixarene extractants
A mixed extractant solvent including calix[4]arene-bis-(tert-octylbenzo)-crown-6 (“BOBCalixC6”), 4′,4′,(5′)-di-(t-butyldicyclo-hexano)-18-crown-6 (“DtBu18C6”), and at least one modifier diss...
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7195745 |
Method of preparing a product based on phosphate of thorium and/or actinide(s)
The invention relates to a process for the preparation of a product based on a phosphate of at least one element M(IV), for example of thorium and/or of actinide(IV)(s). This process comprises the...
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7160466 |
Uses of cucurbituril devices
Uses of cucurbituril derivatives are disclosed. The cucurbituril derivatives have the formula (1) where X is O, S or NH; R1 and R2 are independently selected from the group consisting of hydrogen,...
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7147787 |
Process for treatment of aqueous environments containing a water-soluble polymer
A process wherein the use of a degradation-enhancing reactant or a precursor thereof, e.g., an oxidizing agent, can effectively increase the rate of reaction for the degradation of polymers in an...
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7132513 |
Bifunctional chelating agent
The invention concerns a ligand comprising wherein n is an integer from 1 to 5, X represents —NO2, —NH2, —NCS, —NHCOCH2-Z. NHCO—W—COCNHS, —NH-Q, —NHCS-Q, —NHCOCH2-Q, or —NHCO(CH2)m ?-Q w...
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7091393 |
Processes for immobilizing radioactive and hazardous wastes
The present invention utilizes one or more processes to immobilize a waste that contains one or more of radionuclides, hazardous elements, hazardous compounds, and/or other compounds present in the...
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7045606 |
Bifunctional chelating agent for actinium
The invention concerns a ligand comprising (I) wherein n is an integer from 1 to 5 Y is CO2H or PO3H2T represents —X or -phenyl-X, wherein X represents NO2, NH2, NCS, NHCOCH2-Z, N...
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6714617 |
Disposal of radiation waste in glacial ice
Encapsulating calcined radioactive waste in strong, corrosion-resistant spheres of dimensions such that heat from the radiation melts the ice at a rate which brings the spheres to the bottom of the...
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6652661 |
Radioactive decontamination and translocation method
A method for removing a wide variety of radioactive contaminants from a contaminated surface sufficient for the surface to be classified as a low-level waste or as free release. Contaminated...
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6649055 |
Pump station for radioactive waste water
A pump station for transferring radioactive particle containing waste water, includes: (a.) an enclosed sump having a vertically elongated right frusto conical wall surface and a bottom surface and...
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6635796 |
Reduction of leachability and solubility of radionuclides and radioactive substances in contaminated soils and materials
A process for chemical fixation of radionuclides and radioactive compounds present in soils, solid materials, sludges and liquids. Radionuclides and other radioactive compounds are converted to...
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6625248 |
Process for the treatment of radioactive graphite
A process for the treatment of radioactive graphite which includes the following steps: (i) reacting the radioactive graphite at a temperature in the range of from 250° C. to 900° C. with s...
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6525237 |
Broad spectrum decontamination formulation and method of use
A decontamination formulation is provided which is effective against a broad spectrum of chemical and biological warfare agents and radioactive dusts, comprising an active decontamination agent, a...
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6521809 |
Treatment of organic materials
Processes for the treatment of solutions used for the decontamination of radioactively contaminated surfaces wherein the solution contains radioactive metal ions and organic complexing agents are...
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6511603 |
Alkaline earth cation extraction from acid solution
An extractant medium for extracting alkaline earth cations from an aqueous acidic sample solution is described as are a method and apparatus for using the same. The separation medium is free of...
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6489531 |
Confinement of caesium and/or rubidium in apatitic ceramics
The invention relates to the containment of caesium and/or rubidium, in particular 135Cs and 137Cs in an apatitic matrix of formula: MtCaxLny(PO4)6−u(SiO4)uXin which:M represents Cs and/or Rb,Ln r...
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6483004 |
Method of treating radioactive liquid wastes containing surface active agents
Radioactive laundry liquid wastes are supplied in a liquid waste heating vessel. Hydrogen peroxide and an alkali solution are supplied to the liquid waste heating vessel. pH of radioactive laundry...
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6479021 |
Advanced vitrification system pyrographite
A device for improving waste vitrification in a disposable canister, the process for using the device, and the process for making the device. The disposable canister, also known as a module, has...
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6458271 |
Deep aquifer remediation system
A groundwater decontamination system includes a decontamination unit adapted to be lowered down through a non-pumping well into an aquifer containing contaminated water. The unit can also be raised...
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6428695 |
Aquifer remediation barrier for removal of inorganic contaminants
A permeable barrier for decontaminating groundwater having two distinct components for increasing contaminant removal. Preferably, the barrier material is a mixture or distinct layers of bone-char...
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6395954 |
Advanced vitrification system frit
A process for improving waste vitrification in a disposable canister. In the process, chunks of frit are combined with waste and then added to the disposable canister. The waste and frit are then...
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6387274 |
System and method for the removal of radioactive particulate from liquid waste
A wastewater treatment system and process for removal of radioactive particulates includes continuous monitoring of charged particles and the addition of chemicals to coagulate and cause removal of...
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6380453 |
Nuclear reprocessing solvent treatment
A process is disclosed for the treatment of a solvent which has been used in nuclear fuel reprocessing or uranium ore purification, the solvent comprising an organophosphate ester and a hydrocarbon...
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6359187 |
Method of sealing container for handling radioactive debris
A system and method for filling, dewatering and sealing high integrity containers for storing high level radioactive debris has a support structure for receiving a container and a movable hood...
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6335475 |
Method of chemical decontamination
Processes of reductive decontamination using an agent containing at least two kinds of components, and then decomposing the agent using an apparatus for decomposing at least two kinds of chemical...
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6288300 |
Thermal treatment and immobilization processes for organic materials
Organic materials are mixed with metal oxide, such as hydrated metal oxides, prior to or during heat treatments in aerated or oxygenated environments to stabilize thermal decomposition or...
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6217775 |
Treatment of metal-contaminated leachates utilizing fish bones and fish hard parts
The present invention uses fish bones and fish hard parts to remediate, clean-up, stabilize, immobilize, or otherwise treat metal-contaminated water, soil or waste of any sort. The fish bones and...
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6218592 |
Method and apparatus for the treatment of radioactive evaporator concentrates from nuclear plants
A method for the treatment of radioactive evaporator concentrates from the evaporation system of nuclear plants comprises the steps of (a) freeing the evaporator concentrates from undissolved...
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6211424 |
Advanced vitrification system
The AVS invention provides for an apparatus and process for its practice involving the vitrification of waste materials, such as nuclear waste, inside a disposable canister. The preferred...
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