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| Number | Title | Issue Date |
| 7276640 | Metal oxide nanoparticles for smoke clearing and fire suppression Methods of reducing smoke levels in smoke-affected areas, reducing the level of toxic compounds produced by fires, fire suppression, and increasing flame retardancy. In particular, methods according to the present invention comprise dispersing nanocrystalline partic... | 10/02/2007 |
| 7030287 | Method of decreasing nitrate nitrogen and volatile organic compound in soil and groundwater A method of decreasing nitrate nitrogen and volatile organic compounds in soil and groundwater by burying a fatty acid having 10 or more carbon atoms, an alcohol having 12 or more carbon atoms, an ester of a linear saturated fatty acid having 14 or more carbon atoms... | 04/18/2006 |
| 6696617 | Process for treating complex cyanide The process of the present invention destroys cyanide, especially that associated with spent aluminum potliners, by reacting, in a preferred embodiment the crushed potliners with an effective amount of a mixture made from a chloride salt and bleach in cya... | 02/24/2004 |
| 6695953 | Accelerated methods of oxidizing organic contaminants in aqueous mediums using corona induced reactions and particles therewith Novel accelerated methods involving corona discharge, and preferably pulsed streamer high voltage corona discharge, in combination with an effective amount of suitable particles to break down organic contaminants, such as phenol and phenol red, in aqueous... | 02/24/2004 |
| 6676913 | Catalyst composition and method of controlling PFC and HFC emissions The present invention relates to a catalytic process for the destruction of PFC's and HFC's using a catalyst which comprises aluminum oxide that has preferably been stabilized through the addition of a stabilizing agent (such as, titanium, zirconium, or c... | 01/13/2004 |
| 6673326 | Catalytic processes for the reduction of perfluorinated compounds and hydrofluorocarbons A process for reducing perfluorinated compounds and/or hydrofluorocarbon compounds in a sample uses a catalyst made from aluminum oxide (Al2 O3), and one or more enhancers selected from the group consisting of nickel, cobalt, and sul... | 01/06/2004 |
| 6638488 | Method and apparatus for removing organic hazardous substances using selected solvents Method and apparatus for isolating, decomposing, and fixing the organic hazardous substances in a stable manner using chemical techniques and isolating and decomposing the organic hazardous substances from various waste mixtures. The temperature treatment... | 10/28/2003 |
| 6619218 | Method and apparatus for making a pollutant harmless A method for making harmless a material to be treated containing a pollutant, including the steps of arranging a pair of ejecting nozzles such that nozzle openings thereof are opposed to each other inside a pressure-proof furnace, thermally treating that ... | 09/16/2003 |
| 6133498 | Method for producing chemically bonded phosphate ceramics and for stabilizing contaminants encapsulated therein utilizing reducing agents Known phosphate ceramic formulations are improved and the ability to produce iron-based phosphate ceramic systems is enabled by the addition of an oxidizing or reducing step during the acid-base reactions that form the phosphate ceramic products. The addi... | 10/17/2000 |
| 6083394 | Composition and method for dehalogenation and degradation of halogenated organic contaminants A method of creating an environment which promotes dehalogenation and/or degradation of halogenated organic chemical contaminants in water, sediment, or soil by adding a combination of fibrous organic matter and certain multi-valent metal particles to the... | 07/04/2000 |
| 5574202 | Technique for processing poison gases A technique for degrading a chemical warfare poison gas to render it innocuous. The toxic compound to be so treated is conducted through a reactor containing an anhydrous liquid halide which acts as a catalyst to degrade the toxic compound without yieldin... | 11/12/1996 |
| 5514352 | Apparatus for high speed air oxidation of elemental phosphorous wastes in aqueous medium Apparatus and process for high speed air dispersion (HSAD) and oxidation of elemental phosphorus in aqueous medium. The HSAD apparatus is an element used in a process designed for treating the highly toxic and hazardous phosphorus sludge wastes with oxyge... | 05/07/1996 |
| 5284991 | Cyanide removal from oily solid using a solvent extraction process A process for the removal of cyanides from contaminated oily solid waste performed by utilizing a single processing zone wherein multiple processing steps are carried out to remove contaminants. The steps include loading a contaminated oily solid waste in... | 02/08/1994 |
| 5264192 | Method for detoxifying cyanide-containing water A method for treating cyanide-contaminated water in order to remove dissolved (e.g. free) cyanide (HCN and/or CN-) therefrom. Cyanide-contaminated water is a significant problem in the gold processing industry wherein cyanide compounds are used... | 11/23/1993 |
| 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 |
| 5245111 | Method and apparatus for treatment of liquid photographic processing wastes A method and an apparatus for treatment of liquid wastes from photographic processes are described, in which the wastes to be treated are (a) subjected to an oxygen oxidation as well as (b) an ozone oxidation, (c) optionally from the oxidized wastes halide ions are... | 09/14/1993 |
| 5222448 | Plasma torch furnace processing of spent potliner from aluminum smelters Spent potliner from aluminum reduction cells includes carbon, inorganic brick and refractory material, and fluoride, sulfur, and cyanide compounds, and is considered hazardous. It is treated by introducing it into a vessel, and exposing it to the heat of ... | 06/29/1993 |
| 5221486 | Aqueous phase removal of nitrogen from nitrogen compounds A method is disclosed for denitrification of compounds containing nitrogen present in aqueous waste streams. The method comprises the steps of (1) identifying the types of nitrogen compounds present in a waste stream, (2) determining the concentrations of... | 06/22/1993 |
| 4888101 | System for and method of photocatalytically modifying a chemical composition and method of constructing a panel utilized in the system and the method A system for photocatalytically modifying a chemical composition comprising a semiconductor powder dispersed and entrapped within a layer of Pyrex glass wool interposed between two transparent plates. When a fluid containing the chemical composition flows... | 12/19/1989 |
| 4804527 | Method and composition for safely decomposing hydrazine A hypergol spill, e.g., hydrazine, is safely rendered harmless by contacting it with a composition comprising cupric oxide on a porous support. Neutralization is achieved by drawing the hydrazine into the pellet pores where a reduction reaction of cupric ... | 02/14/1989 |
| 4802995 | Method for decomposing the cyanide radical in cyanide-bearing wastes or materials A method for decomposing the cyanide radical in cyanide-bearing wastes or materials. The cyanide radical of cyanide compounds contained in cyanide-bearing wastes or materials is chemically decomposed. In the preferred embodiment, the cyanide-bearing waste... | 02/07/1989 |
| 4780135 | Process for the detoxification of steel plant wastes A technique for rendering toxic metals (chromium, lead, cadmium and arsenic) contained in steel plant furnace dust innocuous and suitable for burial with minimal adverse environmental impact. Pelletized iron oxide containing dust is introduced into a rota... | 10/25/1988 |
| 4707270 | Process for treating waste water containing phosphorus compounds and/or organic cod substances The specification discloses a novel calcium silicate water-treating agent exhibiting a superior ability to remove various kinds of phosphorus compounds or other environmental pollutants contained in wastewater, the calcium silicate water treating agent co... | 11/17/1987 |
| 4686094 | Treatment of pyrophoric elemental phosphorus-containing material Pyrophoric elemental phosphorus-containing material, e.g., solid waste containing high levels of elemental phosphorus (P4), is treated by contact with an oxygen-containing gas, such as air, to reduce the amount of elemental phosphorus contained... | 08/11/1987 |
| 4648332 | Method of cleaning contaminated soil A method of cleaning contaminated soil which achieves very low levels of residual impurities and does not produce contaminated residues is characterized by the steps of, (a) feeding the contaminated soil to a combustion space (6) of a fluidized bed furnac... | 03/10/1987 |
| 4608241 | Production of phosphorus and phosphoric acid Processes are disclosed for recovering solid wastes containing elemental phosphorus. The wastes may cause serious environmental problems at phosphorus furnaces because elemental phosphorus is toxic to marine animals. Recovery of the wastes was considered ... | 08/26/1986 |
| 4590261 | Method and apparatus for detoxification of cyanide contaminated polymeric film chips The present invention is directed to a method and apparatus for the detoxification of polymeric film chip materials which have been contaminated with cyanide compounds during the process for the reclamation of their silver content. The present invention i... | 05/20/1986 |
| 4582613 | Use of copper (II) oxide as source of oxygen for oxidation reactions This invention comprises a wet oxidation process utilizing copper (II) oxide as the sole oxygen source. In particular the destruction and detoxification by oxidation of toxic materials such as cyanide, hydrocarbons, halogenated hydrocarbons, and dioxins c... | 04/15/1986 |
| 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 |
| 4468376 | Disposal process for halogenated organic material A method for disposing of a halogenated organic material includes the steps of partially oxidizing the halogenated organic material, a hydrocarbonaceous material, and a nitrogen compound with a free-oxygen containing gas and optionally with a temperature ... | 08/28/1984 |
| 4437417 | Environmentally safe process for disposing of toxic inorganic CN-containing sludge Toxic inorganic CN-containing sludge as produced by treating at least a portion of the water used to quench cool and/or scrub the hot raw effluent gas stream from a partial oxidation gasifier with a ferrous salt and a base may be disposed of by separating... | 03/20/1984 |
| 4436601 | Metal removal process This disclosure is directed to a membrane or diaphragm-free, electrolytic process for removal of a significant portion of at least one metal contaminant from waste water containing it comprising contacting said waste water with a plurality of anodes, each... | 03/13/1984 |
| 4402836 | Method for treating contaminated wastewater A method for treating hydrazine-fuel contaminated wastewater in which hydrazine, monomethyl hydrazine, unsymmetrical dimethyl hydrazine and dimethylnitrosamine pollutants are effectively decomposed at a controlled pH of about 5 by an ultraviolet induced c... | 09/06/1983 |
| 4352332 | Fluidized bed incineration of waste Apparatus and methods for fluidized bed incineration of waste containing phosphorus wherein the bed comprises lime or limestone which negates heretofore existing problems incident to the presence of phosphorus.... | 10/05/1982 |
| 4341641 | Process for treating cyanide and cyanate containing wastewaters A process for treating a cyanide and cyanate-containing aqueous influent such as a wastewater stream is provided. A two-stage method is included for destroying a cyanide-containing influent which comprises; (a) introducing said cyanide-containing influent into... | 07/27/1982 |
| 4301014 | Phosphorus pentasulfide waste water treatment The process disclosed in this invention takes the waste solids, gases, and water from a phosphorus pentasulfide manufacturing facility and hydrolyzes the phosphorus pentasulfide by heating. The phosphorus portion is converted to a soluble phosphate and th... | 11/17/1981 |
| 4180557 | Method for detoxifying phosphide containing pesticides Method for detoxifying phosphide containing pesticides by treatment with aqueous alkaline reagents optionally containing oxidants and/or surfactants.... | 12/25/1979 |
| 4176060 | Process for soluble cyanide removal from wastewater streams A process for destroying the soluble cyanide complex content of industrial wastewater streams which comprises acidification of the stream and chlorination at temperatures of at least 80° C., the soluble cyanide complexes breaking down to free CN- | 11/27/1979 |
| 4163682 | Method for disposing of red phosphorus composition A method for disposing of a pyrotechnic composition comprised of red phosrus, manganese dioxide, magnesium, zinc oxide and linseed oil, with at least fifty percent of the composition being red phosphorus. The composition is burned in a first enclosed cha... | 08/07/1979 |
| 4145268 | Method of conducting an electrolysis A method of conducting an electrolysis is described. The method comprises tumbling an anode made up of a plurality of electrically conducting particles in an electrolyte while feeding a positive D.C. current to the particles. The current is fed via an ano... | 03/20/1979 |
