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| Number | Title | Issue Date |
| 7897830 | Methods for reducing ammonia evolution from cementitious and pozzolanic mixtures A method is provided for reducing the amount of ammonia evolved from a cementitious or pozzolanic mixture containing contaminated fly ash, including: providing fly ash contaminated with ammonia or ammonium-containing compounds; and adding a halogenated hydantoin to ... | 03/01/2011 |
| 7812210 | Refuse treatment plant The invention relates to a refuse treatment plant (1) with a closed construction, which permits the aerobic degradation of organic material, for example in refuse comprising biodegradable fractions. The refuse treatment plant (1) comprises a bay (5 | 10/12/2010 |
| 7329399 | Hydrogen trapper compound, method for the production and uses thereof A hydrogen-trapping compound is provided, along with a process for manufacturing the compound, and its uses, wherein the hydrogen-trapping compound is characterized in that it contains at least one metal salt of formula MX(OH), in which M represents a divalent trans... | 02/12/2008 |
| 6890507 | Ozone treatment of fly ash Carbon-containing fly ash has been treated with optimum amounts of ozone. There is homogenous treatment of the fly ash with ozone and over saturation with ozone is avoided. In a further embodiment of the invention carbon, from various sources is oxygenated to be inc... | 05/10/2005 |
| 6840712 | Thermal remediation process A process and apparatus for removing organic and inorganic contaminants from solid media such as drill cuttings, tank bottoms or contaminated soils. The process is conducted in at least one thermal screw conveyor which provides two or more separate temperature zones... | 01/11/2005 |
| 6644890 | Treatment of oxidable gas generated from waste at a dumping area A method for treating oxidable gas generated from waste at a dumping area and to the structure of the dumping area. The dumping area has an organic waste layer covered with a sealing layer that prevents the absorption of water, with a drying layer and a s... | 11/11/2003 |
| 6576289 | Method and composition for treating volatile waste A process of treating solid material flammable waste is provided in which dry fire retardant admixtures are used to intermix with the material waste so as to lower the burn rate and flammability characteristics of the material waste. The process, in turn,... | 06/10/2003 |
| 6399393 | Cryogenic homogenization and sampling of heterogeneous multi-phase feedstock An apparatus and process for producing a homogeneous analytical sample from a heterogenous feedstock by: providing the mixed feedstock, reducing the temperature of the feedstock to a temperature below a critical temperature, reducing the size of the feeds... | 06/04/2002 |
| 6354108 | Method for preventing consolidation of blast furnance granulated slag and consolidation preventing system The object of the present invention is to provide a safe, easy-to-manage, successive, and swift method and system for preventing granulated blast-furnace slag from solidifying. Carbonated water is generated by dissolving carbon dioxide in water. Granulate... | 03/12/2002 |
| 6318123 | Method for granulating a liquid slag bath and device for carrying out the method The method for granulating liquid slag melts, in particular blast furnace slag, in which the melt (2) is ejected into a cooling chamber via a slag tundish (1) and in which fluid under pressure, in particular compressed gas, vapor or pressurized water, is ... | 11/20/2001 |
| 6063979 | Method of decomposing dioxins A method for decomposing and eliminating dioxins contained in flyash at a lower temperature and in a shorter time is provided, in which dioxins or dioxins-containing materials are brought into contact with amine compounds and/or ammonium compounds at a te... | 05/16/2000 |
| 5969209 | Process and composition for soil remediation Compositions and methods are provided for the decontamination of waste matter, in particular for soil remediation. The methods include making and applying a polymer composition to waste matter and subjecting the waste matter and polymer composition to rad... | 10/19/1999 |
| 5928128 | Method for the treatment of incineration residues This invention relates to a method for the treatment of incineration residues which are produced, for example, in the incineration of domestic waste, in which method said residues are treated with gas containing CO2. In the treatment, microorga... | 07/27/1999 |
| 5898093 | Treatment process for contaminated waste A process for treating contaminated waste to stabilize environmentally harmful heavy metal. The contaminated waste is contacted with a mixture of (i) inorganic sulfide, (ii) calcium phosphate to prevent oxidation of the sulfide and (iii) calcium carbonate... | 04/27/1999 |
| 5877393 | Treatment process for contaminated waste A process for treating contaminated waste to stabilize environmentally harmful heavy metals. The waste is contacted with a mixture of a sulfide, preferably calcium sulfide, an inorganic phosphate, which prevents oxidation of sulfide, and a base that at le... | 03/02/1999 |
| 5837325 | Method and apparatus for regulating neutralization of contaminated soil A method and apparatus for regulating treatment of contaminated soil may be accomplished by regulating a soil volume rate and a neutralizing agent volume rate to insure proper application of the neutralizing agent to the contaminated soil. Control circuit... | 11/17/1998 |
| 5769938 | Waste-treating agent To treat waste containing harmful netals such as lead, cadmium, mercury, chromium, copper, nickel, zinc, etc., the waste is mixed with a treating agent containing, as the essential constituent component, solid acid(s) and/or cement and additionally a caki... | 06/23/1998 |
| 5756304 | Screening of microorganisms for bioremediation The present invention is directed to the application of robotics to screen and optimize microorganisms for their bioremediation capabilities. In particular, the present invention provides methods to screen for the ability of microorganisms to metabolize p... | 05/26/1998 |
| 5678236 | Method and apparatus for eliminating volatiles or airborne entrainments when vitrifying radioactive and/or hazardous waste In this invention radioactive or hazardous containing materials are vitrified in a melter having two or more chambers. Glass feed materials are added to the primary chamber of the melter and they are heated to a molten glass which is then transported to o... | 10/14/1997 |
| 5544975 | Method for the rehabilitation of polluted soils and installation for the implementation of this method In a method for the rehabilitation of polluted soils by means of a third substance, the polluted soils, excavated and processed beforehand, are introduced into a contacting cell in the lower part of which the injection of the third substance, towards the ... | 08/13/1996 |
| 5506301 | Treatment of isocyanate residue The present invention is directed to a process for treating an isocyanate distillation residue comprising (a) mixing acidified water with an organic material selected from limonene, limonene oxide, menthoxyacetic acid, menthyl chloroformate, and γ-terpin... | 04/09/1996 |
| 5463171 | Method for solidification of waste, and apparatus, waste form, and solidifying material therefor Objective of the present invention is to provide a preferable solidified body ensuring performance of artificial barrier in a solidifying process for incombustible miscellaneous solid waste and other wastes such as calcined ashes by preventing generation ... | 10/31/1995 |
| 5430234 | Process for removing phosphorus and heavy metals from phosphorus trichloride still bottoms residue Unreacted phosphorus and heavy metals, such as arsenic and antimony, are removed in environmentally acceptable form from the non-aqueous still bottoms residue resulting from the production of PCl3, by reacting the residue with an excess of calc... | 07/04/1995 |
| 5347073 | Fixation of heavy metals, mercury recovery and dioxins destruction in municipal solid waste incinerator ash Fly ash generated from incineration of municipal solid waste (MSW) when placed in landfills can under mild acid conditions 1each lead and cadmium. A process for stabilizing lead in this fly ash is presented which involves calcining a mixture of the fly as... | 09/13/1994 |
| 5347074 | Fixation of heavy metals, mercury recovery and dioxins destruction in scrubbed municipal solid waste incinerator ash Fly ash generated from incineration of municipal solid waste (MSW) when placed in landfills can under mild acid conditions can leach lead and cadmium. A process for stabilizing heavy metals in this fly ash is presented which involves calcining the fly ash... | 09/13/1994 |
| 5276250 | Process for decomposing polyhalogenated compounds The invention relates to a process for the decomposition of polyhalogenated aliphatic compounds having 1 to 8 carbon atoms, polyhalogenated cycloalkyl compounds having 5 to 8 carbon atoms and polyhalogenated aromatic compounds having at least 5 carbon ato... | 01/04/1994 |
| 5264654 | Method and apparatus for processing contaminated soils A method of and apparatus for decontaminating contaminated soils and similar materials, the method includes (a) drying and comminuting contaminated soil and similar material in a mill through which a flow of hot gases is passed to provide a mixture of sol... | 11/23/1993 |
| 5260047 | Process for purifying waste gases containing polyhalogenated compounds A process for purifying waste gases containing polyhalogenated compounds, in particular dioxins and furans, which waste gases accumulate, for example, in a garbage incinerator 1, are directed through a filter 3, which contains an adsorption agent, e.g., a... | 11/09/1993 |
| 5220111 | Fixation of heavy metals in scrubbed municipal solid waste incinerator ash Fly ash generated from incineration of municipal solid waste (MSW) when placed in landfills under mild acid conditions can leach lead and cadmium. A process for stabilizing heavy metals in this fly ash is presented which involves calcining in the presence... | 06/15/1993 |
| 5220112 | Fixation of heavy metals in municipal solid waste incinerator ash Fly ash generated from incineration of municipal solid waste (MSW) when placed in landfills can under mild acid conditions leach lead and cadmium. A process for stabilizing lead in this fly ash is presented which involves calcining a mixture of the fly as... | 06/15/1993 |
| 4795590 | Treatment of hazardous material with vapor suppressing, persistent, water-containing, polymeric air foam Air is mechanically entrained in an aqueous solution of surfactant and poly(oxyalkylene) polyisocyanate polymer, the poly(oxyalkylene) portion of which contains sufficient oxyethylene units to render the polymer water-soluble and hydrophilic, to form a fl... | 01/03/1989 |
| 4541863 | Method for the treatment of phosphuretted slag Process for the treatment of phosphuretted slag obtained by refining a molten bath, such as steel. The process according to the invention involves hot oxidizing the slag into which is blended, after refining, a pulverized solid adjuvant, strongly oxidizin... | 09/17/1985 |
| 4039611 | Method for treating residues, left over after the gas release, of pest control agents that contain earth metal phosphides and/or alkaline earth metal phosphides A water soluble oxidizing material is packaged with gas releasing pest control agents for decomposing residual gas producing agents.... | 08/02/1977 |
