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| Number | Title | Issue Date |
| 5649323 | Composition and process for the encapsulation and stabilization of radioactive hazardous and mixed wastes The present invention provides a composition and process for disposal of radioactive, hazardous and mixed wastes. The present invention preferably includes a process for multibarrier encapsulation of radioactive, hazardous and mixed wastes by combining su... | 07/15/1997 |
| 5576468 | Methods for encapsulating waste and products thereof A method for disposing of waste material employs an agglomerate formed by molding an admixture of waste material and thermosetting binder. The use of a thermoplastic resin sheet in conjunction with the agglomeration mold promotes the safety of the molding... | 11/19/1996 |
| 5434334 | Process for treating an aqueous waste solution Processes and devices are disclosed for converting an aqueous waste solution, such as a radioactive waste stream, into a highly concentrated sludge having substantially little or no water. In turn, the sludge may be converted into a solid polymeric form s... | 07/18/1995 |
| 5414197 | Method of containing and isolating toxic or hazardous wastes A method of containing hazardous and toxic wastes includes the steps of irporating the dried waste, in a salt form, in melted polymer, such as asphalt, and forming the waste salt and asphalt blend into aggregate pellets. The pellets are coated with a pow... | 05/09/1995 |
| 5405509 | Remediation of a bulk source by electropotential ion transport using a host receptor matrix Remediation of soil, concrete and groundwater using electropotential gradient induced migration of a target ion and immobilization and/or confinement of the target ion by a host receptor matrix (HRM). In addition to immobilizing and/or confining the targe... | 04/11/1995 |
| 5318730 | Process for containment of hazardous wastes A method and composition for stabilizing and isolating hazardous, radioactive or mixed waste materials of particulate and solid types, which comprises providing a non-toxic one component aqueous mixture of an acrylic polymer containing a thixotropic agent... | 06/07/1994 |
| 5043103 | Method and apparatus for centrifugally casting hazardous waste A casting containing toxic waste is made by centrifugally casting toxic waste in a pre-formed cage having heat conducting means therein. The casting is formed with suitable shielding materials selected as a function of the waste being cast. The finished c... | 08/27/1991 |
| 4927564 | Method for conditioning radioactive or toxic wastes in thermosetting resins The invention concerns a method for conditioning in a thermosetting resin a quantity of waste stored in water. According to the invention, a liquid hardening agent, immiscible with water and having a density greater than that of the water, is used in order to ... | 05/22/1990 |
| 4828761 | Process for impregnating a concrete or cement body with a polymeric material A process for impregnating cementitious solids with polymeric materials by blending polymeric materials in a grout, allowing the grout to cure, and contacting the resulting solidified grout containing the polymeric materials with an organic mixture contai... | 05/09/1989 |
| 4772430 | Process for compacting and solidifying solid waste materials, apparatus for carrying out the process and overall system for disposal of such waste materials A process for compacting and solidifying solid waste materials to effect the volume reduction thereof simultaneously with the solidification thereof with thermoplastic resins originally contained in the waste materials and, if necessary, supplementary the... | 09/20/1988 |
| 4715992 | Filter element reduction method Disclosed is a method of reducing the volume of a material containing addition polymerizable bonds by contacting the material with sufficient butyrolactone to dissolve the soluble organic material therein and form a slurry. About 0.1 to about 2% by weight... | 12/29/1987 |
| 4708822 | Method of solidifying radioactive solid waste A method of solidifying radioactive waste wherein radioactive solid waste of a predetermined shape are embedded in a solidifying material which has a modulus of elasticity that is equal to, or smaller than, the modulus of elasticity of said waste, to prov... | 11/24/1987 |
| 4702862 | Method for the final conditioning of radioactive and/or toxic waste Method for the final conditioning of radioactive and/or toxic waste by fusing it into thermoplastic matrix material, binding radioactive and/or toxic pollutants contained in the waste from all sides, characterized by the feature that radioactive thermopla... | 10/27/1987 |
| 4585583 | In situ solidification of ion exchange beads A method is disclosed for encapsulating and solidifying spent ion exchange beads contained in a container to form an ion exchange bed with a solidification resin without the necessity for applying shear in the bed by an external force such as by a mixing ... | 04/29/1986 |
| 4559170 | Disposal of bead ion exchange resin wastes Bead ion exchange resin wastes are disposed of by a process which involves spray-drying a bead ion exchange resin waste in order to remove substantially all of the water present in such waste, including the water on the surface of the ion exchange resin b... | 12/17/1985 |
| 4530783 | Composition of matter suitable for solidifying radioactive wastes, products based on said composition wherein radioactive wastes are solidified and process for obtaining said products A composition of matter suitable for solidifying radioactive wastes is formed of unsaturated polyester resins comprising a polyester (I) obtained polycondensing (a) maleic anhydride and/or maleic and/or fumaric acid, (b) isophthalic and/or terephthalic ac... | 07/23/1985 |
| 4474688 | Immobilization of actinides by electropolymerization A method is disclosed of immobilizing actinide metal oxide ions. A liquid composition is prepared of the actinide metal oxide ions and a monomer which is capable during electropolymerization of complexing with the actinide metal ions. An optional polar so... | 10/02/1984 |
| 4459212 | Process for waste encapsulation An improvement in the process of encapsulating aqueous liquid waste materials in liquid thermosettable resins of the group consisting of vinyl ester resins, unsaturated polyester resins, and mixtures thereof by forming an emulsion of such waste materials ... | 07/10/1984 |
| 4459211 | Process for waste encapsulation An improvement in the process of encapsulating aqueous liquid waste materials in liquid thermosettable resins of the group consisting of vinyl ester resins, unsaturated polyester resins, and mixtures thereof, wherein the waste is emulsified in the resin, ... | 07/10/1984 |
| 4434074 | Volume reduction and encapsulation process for water containing low level radioactive waste Solutions or slurries of waste material in water are dewatered and encapsulated within a polymer for disposal, comprising the operations of removing water therefrom with azeotropic mixture evaporation and encasing the dewatered waste residue in an organic... | 02/28/1984 |
| 4405512 | Process for encapsulating radioactive organic liquids in a resin A cured resin system is used to encapsulate certain liquid low level radioactive wastes which are solvents for or are soluble in the uncured resin and which are more soluble in water than in the uncured resin. The process comprises the dilution of said wa... | 09/20/1983 |
| 4400313 | Process for waste encapsulation An improvement in the process of encapsulating waste materials in aqueous liquid or finely divided, dry solid form, in liquid thermosettable resins of the group consisting of vinyl ester resins, unsaturated polyester resins, and mixtures thereof, which co... | 08/23/1983 |
| 4382026 | Process for encapsulating radioactive organic liquids in a resin Radioactive organic liquids are converted to a form suitable for burial by the process wherein the liquid is contacted with insoluble, swellable polymer particles to form swollen gelled particles which are dispersed in an unsaturated polyester, vinyl este... | 05/03/1983 |
| 4379763 | Waste water treatment by chelation-gelation Contaminant components in waste water are complexed with a chelating agent and the complexed component is gelled with a polyurethane prepolymer to provide a gelled mass.... | 04/12/1983 |
| 4363757 | Method for noncontaminating solidification for final storage of aqueous, radioactive waste liquids A method for solidifying medium radioactive aqueous waste liquids, low radioactive aqueous waste liquids, and aqueous waste liquids containing tritium for final non-contaminating storage. The waste liquids are first mixed with absorbing agents, e.g., clay... | 12/14/1982 |
| 4358401 | Liquid emulsion scintillators which solidify for facile disposal A liquid organic scintillation cocktail which is readily converted to a solid for disposal after use. Also disclosed are a method of disposal of radwaste employing the cocktail and a kit useful for practicing the method.... | 11/09/1982 |
| 4253985 | Process for handling and solidification of radioactive wastes from pressurized water reactors Borate-containing radioactive waste waters are treated by the addition of an alkali metal hydroxide and/or ammonium hydroxide (including non-detrimentally substituted ammonium hydroxides) in an amount effective to prevent precipitation of the borates at t... | 03/03/1981 |
| 4249949 | Methods for consolidating radioactive waste material using self-setting or water-settable compositions containing an organic polyisocyanate, a non-ionic surface active agent devoid of isocyanate-reactive groups and alkaline filler Self-setting compositions are formed by bringing into admixture an organic polyisocyanate, a non-ionic surface active agent devoid of isocyanate-reactive groups, an alkaline filler and water. Preferred alkaline fillers are portland cement, calcium oxide a... | 02/10/1981 |
| 4242220 | Waste disposal method using microwaves Waste such as sludge containing poisonous substances is processed into a safe article by removing water in a usual manner, drying the waste to substantial dryness by microwave heating, mixing the dry waste powder with a thermoplastic resin, irradiating th... | 12/30/1980 |
| 4235737 | Method for treating radioactive liquids A process for treating and handling radioactive liquids and rendering such liquids safe for handling, transportation and disposal, the process comprising adding thereto a small amount of a water-insoluble alkali salt of an aqueous alkali saponified gelati... | 11/25/1980 |
| 4222889 | Method for encasing waste barrels in a leachproof closed sheath Radioactive wastes are encased in closed sheaths, the wastes to be solidified with binders and accommodated in barrels and the closed sheath to be resistant to water and aqueous solutions of natural mineral salts and to leaching, by completely surrounding... | 09/16/1980 |
| 4194842 | Method for binding liquid-containing radioactive wastes and kneading machine therefor Liquid-containing radioactive wastes are bound into thermoplastic material by introducing particles of thermoplastic material at a non-sticking temperature into a kneading machine, heating the thermoplastic material in the absence of radioactive wastes to... | 03/25/1980 |
| 4148745 | Method of preparing phosphoric acid esters for non-polluting storage by incorporation in polyvinyl chloride Admixtures of radioactive material contaminated phosphoric acid ester and polyvinyl chloride from essentially nonvolatile masses which do not flow.... | 04/10/1979 |
| 4131563 | Process of preparing substantially solid waste containing radioactive or toxic substances for safe, non-pollutive handling, transportation and permanent storage A process of preparing substantially solid wastes containing radioactive or toxic substances for safe, non-pollutive handling, transportation and permanent storage, wherein the wastes are mixed with polymerizable mixtures consisting essentially of monovin... | 12/26/1978 |
| 4077901 | Encapsulation of nuclear wastes Toxic waste materials are encapsulated by the method wherein the waste material in liquid or finely divided solid form is uniformly dispersed in a vinyl ester resin or an unsaturated polyester and the resin cured under conditions that the exotherm does no... | 03/07/1978 |
| 4021363 | Material for immobilization of toxic particulates The immobilization of toxic solids with a mixture of wax and a low molecular weight polyolefin is described herein. In a preferred embodiment, a mixture of between about 60-90% wax and 10-40% of either polyethylene or polypropylene is used to immobilize t... | 05/03/1977 |
| 4020003 | Fixation of tritium in a highly stable polymer form A method for the fixation of tritium comprising reacting tritiated water with calcium carbide to produce calcium hydroxide and tritiated acetylene, polymerizing the acetylene, and then incorporating the polymer in a solidifying matrix.... | 04/26/1977 |
| 4009116 | Process of preparing substantially organic waste liquids containing radioactive or toxic substances for safe, non-pollutive handling, transportation and permanent storage A process of preparing substantially organic waste liquids containing radioactive or toxic substances for safe, non-pollutive handling, transportation and permanent storage, wherein the liquids are mixed with polymerizable mixtures consisting essentially ... | 02/22/1977 |
