Compositions Patents (Class 588/901)
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Patent number: 6797846Abstract: A crystal substance formed by precipitating as fibrous aggregates by making a metal aliphatic carboxylate dissolve completely in pure water, stirring, and gradually cooling the resulting solution. A method of preparing the fibrous crystal aggregates. A material for recovering flowing oil and method of recovering flowing oil by using the fibrous crystal aggregates. A material for solidifying liquid hydrocarbon, waste tempura oil and edible oil and method of solidifying liquid hydrocarbon, waste tempura oil and edible oil by using the fibrous crystal aggregates. A method of preparing the solidifying material.Type: GrantFiled: March 11, 2002Date of Patent: September 28, 2004Assignees: National Institute of Advanced Industrial Science and Technology, Okamura Oil, Mill, Ltd.Inventors: Hiroshi Sakaguchi, Yoshishige Kida, Seizi Iseki
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Publication number: 20040127620Abstract: A reactive coating composition and method for treating a surface including heavy metals by applying the reactive coating composition to the surface. The surface can be, for example, a paint layer containing heavy metals. The reactive coating composition includes a stabilizing agent to stabilize the heavy metal and a permeability enhancing agent to increase the permeability of the paint layer, facilitating the reaction of the heavy metal with the stabilizing agent. The structure including the treated paint layer can be left in place or can be disposed in a non-hazardous landfill.Type: ApplicationFiled: December 12, 2003Publication date: July 1, 2004Inventors: James Barthel, Mark A. Peters
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Patent number: 6723791Abstract: An oil-sorbent composition of matter has bound combinations of styrene-butadiene-styrene (SBS) and ethylene propylene diene monomer (EPDM). The SBS, or both materials, may be in the form of multitudes of granules. In certain preferred embodiments, the combination is 10-30% by weight and the SBS is about 30% styrene and manufactured without talc. The composition of matter can be formed into a solid, compliant body and utilized in a product for absorbing oil. The body can be formed, in one preferred embodiment, into an extended cylinder having an axial hole.Type: GrantFiled: December 31, 2001Date of Patent: April 20, 2004Assignee: Abtech Industries, Inc.Inventors: Glenn R. Rink, James F. Morris, Stephen C. Stelpstra, Robert L. Rosania, Jan R. Hegeman, Peter A. Allen
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Patent number: 6723890Abstract: A formulation and method of making and using that neutralizes the adverse health effects of both chemical and biological toxants, especially chemical warfare (CW) and biological warfare (BW) agents. The aqueous formulation is non-toxic and non-corrosive and can be delivered as a long-lasting foam, spray, or fog. The formulation includes solubilizing compounds that serve to effectively render the CW or BW toxant susceptible to attack, so that a nucleophillic agent can attack the compound via a hydrolysis or oxidation reaction. The formulation can kill up to 99.99999% of bacterial spores within one hour of exposure.Type: GrantFiled: September 14, 2001Date of Patent: April 20, 2004Assignee: Sandia CorporationInventors: Mark D. Tucker, Rita G. Betty, Maher E. Tadros
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Patent number: 6653355Abstract: An oil treating agent of W/O emulsion, wherein an aqueous dispersed phase is dispersed in an oily continuous phase, and wherein the dispersed phase is an alkaline mixture solution obtained by mixing water, a solution comprising water and an alcohol, or a water-free alcohol solution with an alkali hydroxide e.g. sodium hydroxide or with a metal alkoxide e.g. sodium alkoxide and the continuous phase comprises a liquid incompatible with the dispersed phase.Type: GrantFiled: September 5, 2000Date of Patent: November 25, 2003Assignees: Hakugen Co., Ltd., Prest CorporationInventors: Tatsuo Kasahara, Tomohiro Shiiya, Kunimitsu Tamura
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Patent number: 6645902Abstract: An adsorbent and process for producing an absorbent capable of decomposing an organic halogen compound, is provided. The adsorbent can adsorb organic halogen compounds contained in waste gases and can assuredly decompose them without synthesizing them. A salt of Pt and/or Pd, an organic titanium compound and an organic binder are reacted in a solvent, to thereby synthesize a dispersion of an organic metal compound precursor containing Pt and/or Pd and Ti in molecules thereof, a sol of TiO2 is added to the dispersion to prepare a catalyst-coating solution, an activated carbon is impregnated with the catalyst-coating solution, and the resulting mixture is heated, thereby allowing the activated carbon to carry thereon an organic halogen compound-decomposing catalyst comprising TiO2 and, dispersed therein, fine particles of Pt and/or Pd. In a low temperature range of 130 to 150° C.Type: GrantFiled: May 3, 2002Date of Patent: November 11, 2003Assignee: NGK Insulators, Ltd.Inventors: Masakatsu Hiraoka, Katsuhiro Tokura, Kazuyuki Oshita
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Patent number: 6630421Abstract: A reactive agent for decomposing fluorine compounds comprising alumina and an alkaline earth metal compound; a process for decomposing fluorine compounds, comprising contacting the reactive agent with a fluorine compound at a temperature of 200° C. or more; and a process for manufacturing a semiconductor device, comprising an etching or cleaning and a decomposing using the reactive agent.Type: GrantFiled: April 28, 2000Date of Patent: October 7, 2003Assignee: Showa Denko Kabushiki KaishaInventors: Hitoshi Atobe, Toraichi Kaneko, Yuji Hayasaka, Shinichi Yano
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Patent number: 6630419Abstract: The invention relates to methods of vitrifying waste and for lowering the melting point of glass forming systems by including lithia formers in the glass forming composition in significant amounts, typically from about 0.16 wt % to about 11 wt %, based on the total glass forming oxides. The lithia is typically included as a replacement for alkali oxide glass formers that would normally be present in a particular glass forming system. Replacement can occur on a mole percent or weight percent basis, and typically results in a composition wherein lithia forms about 10 wt % to about 100 wt % of the alkali oxide glass formers present in the composition. The present invention also relates to the high lithia glass compositions formed by these methods.Type: GrantFiled: March 28, 2002Date of Patent: October 7, 2003Assignee: Westinghouse Savannah River Company, LLCInventors: Carol M. Jantzen, John B. Pickett, Connie A. Cicero-Herman, James C. Marra
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Patent number: 6624103Abstract: The invention relates to methods of vitrifying waste and for lowering the melting point of glass forming systems by including lithia formers in the glass forming composition in significant amounts, typically from about 0.16 wt % to about 11 wt %, based on the total glass forming oxides. The lithia is typically included as a replacement for alkali oxide glass formers that would normally be present in a particular glass forming system. Replacement can occur on a mole percent or weight percent basis, and typically results in a composition wherein lithia forms about 10 wt % to about 100 wt % of the alkali oxide glass formers present in the composition. The present invention also relates to the high lithia glass compositions formed by these methods.Type: GrantFiled: May 8, 2001Date of Patent: September 23, 2003Assignee: Westinghouse Savannah River Company, LLCInventors: Carol M. Jantzen, John B. Pickett, Connie A. Cicero-Herman, James C. Marra
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Patent number: 6589156Abstract: A composition for transforming a chrysotile asbestos-containing material into a non-asbestos material is disclosed, wherein the composition comprises water, at least about 30% by weight of an acid component, at least about 0.1% by weight of a source of fluoride ions, and a stable foam forming amount of a foaming agent system composed of a non-ionic alkyl polyglycoside alone or with additional non-ionic foaming agents. A method of transforming the asbestos-containing material into a non-asbestos material using the present composition in the form of a foam also disclosed.Type: GrantFiled: December 21, 2000Date of Patent: July 8, 2003Assignee: W. R. Grace & Co.-Conn.Inventor: Lawrence Joseph Kindt
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Patent number: 6566574Abstract: A formulation and method of making that neutralizes the adverse health effects of both chemical and biological compounds, especially chemical warfare (CW) and biological warfare (BW) agents. The formulation of the present invention non-toxic and non-corrosive and can be delivered by a variety of means and in different phases. The formulation provides solubilizing compounds that serve to effectively render the chemical and biological compounds, particularly CW and BW compounds, susceptible to attack and at least one reactive compound that serves to attack (and detoxify or kill) the compound. The at least one reactive compound can be an oxidizing compound, a nucleophilic compound or a mixture of both. The formulation can kill up to 99.99999% of bacterial spores within one hour of exposure.Type: GrantFiled: June 29, 2000Date of Patent: May 20, 2003Assignee: Sandia CorporationInventors: Maher E. Tadros, Mark D. Tucker
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Patent number: 6553887Abstract: The invention disclosed relates to a foam-forming composition, for suppression/containment of blast from explosive devices. The composition comprises, a) a surfactant 40-80% w/w b) a foam stabilizer 0-7% w/w c) a polyalkylene glycol 10-30% w/w d) water, balance to 100%.Type: GrantFiled: February 18, 2000Date of Patent: April 29, 2003Assignee: Her Majesty the Queen in right of Canada as represented by the Solicitor General Acting through the Commissioner of the Royal Canadian Mounted PoliceInventors: John G. Bureaux, George Cowan, Edward N. Cundasamy, J. Garfield Purdon
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Patent number: 6461535Abstract: The present invention provides a process for removing arsenic from ground water to be processed and used in remote dwellings. The process includes (a) contacting a clay, a coagulant, and an oxidizer with water containing arsenic to form a coagulated colloidal mixture; (b) adsorbing the arsenic onto the coagulated colloidal mixture; and (c) separating the water from the coagulated colloidal mixture. The invention also provides a composition ready for use in removing arsenic from ground water to be used in remote areas. The composition includes an activated clay, a coagulant, and an oxidizer in predetermined proportions for efficient removal of arsenic from ground water.Type: GrantFiled: December 3, 1999Date of Patent: October 8, 2002Assignee: Pan American Health OrganizationInventor: MarĂa Luisa Castro de Esparza
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Patent number: 6440884Abstract: Building bricks and tiles are made by mixing 60% to 75% clay, 20% to 40% sludge and 1% to 10% sand, all percentages being by weight of the total composition. This process utilizes industrial waste products to provide building materials which are lighter and stronger than conventional materials.Type: GrantFiled: March 16, 2001Date of Patent: August 27, 2002Inventor: Theophilis A. Devagnanam
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Patent number: 6423531Abstract: The present invention discloses the formulation and use of an advanced solid-media chemical composition which includes both plant-derived and inorganic components which is designed and intended to enhance the removal of a broad range of recalcitrant organic and inorganic contaminants in the environment by provided an improved means of promoting the anaerobic, biologically mediated degradation, transformation, and/or detoxification of the contaminants which may be present in solid and liquid wastes, soils, sediments, and water bodies. The invention provides for improved means of (i) promoting the solid-phase extraction, absorption and adsorbtion of recalcitrant contaminants from contaminated media, (ii) creating, enhancing, and maintaining anaerobic and highly reducing conditions (i.e.Type: GrantFiled: November 17, 1999Date of Patent: July 23, 2002Assignee: Geovation Technologies, Inc.Inventors: Eric Christian Hince, Jennifer Ann Singer
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Patent number: 6383128Abstract: Improved methods and compositions for decreasing the bioavailability of metals in soil are provided. Broadly, the methods comprise mixing a source of phosphorus and an oxide of manganese with the contaminated soil so as to reduce the metal bioavailability in the soil. The phosphorus source and oxide of manganese can be individually mixed with the soil, or can be provided as a premix powder or granule to be mixed with the contaminated soil. Preferably, the pH of the soil is then adjusted to, and maintained at, a level of at least about 7.0. Preferred phosphorus sources include phosphate rock, alkali and alkaline earth metal phosphates, ammonium phosphates, ammonium orthophosphates, orthophosphoric acid, and superphosphates. Preferred oxides of manganese include MnO2, Mn3O4, birnessite, cryptomelane, and psilomelanes.Type: GrantFiled: March 16, 2000Date of Patent: May 7, 2002Assignee: Kansas State University Research FoundationInventors: Gary M. Pierzynski, Ganga M. Hettiarachchi
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Patent number: 6344519Abstract: An oil-sorbent composition of matter has bound combinations of styrene-butadiene-styrene (SBS) and ethylene propylene diene monomer (EPDM). The SBS, or both materials, may be in the form of multitudes of granules. In certain preferred embodiments, the combination is 10-30% by weight and the SBS is about 30% styrene and manufactured without talc. The composition of matter can be formed into a solid, compliant body and utilized in a product for absorbing oil. The body can be formed, in one preferred embodiment, into an extended cylinder having an axial hole.Type: GrantFiled: January 9, 1998Date of Patent: February 5, 2002Assignee: Abtech Industries, Inc.Inventors: Glenn R. Rink, James F. Morris, Stephen C. Stelpstra
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Patent number: 6342461Abstract: A ceramic composition made from waste materials and a method for manufacturing the same are disclosed. The ceramic composition comprises between 5 and 75 by weight part of a solid stated waste material including heavy metals, between 15 and 45 by weight part of a fly ash and between 5 and 55 by weight part of a clay. The ceramic composition is manufactured by compositely stabilizing various waste materials and is available for a building material or an engineering material. Therefore, the waste materials are effectively recycled without causing environmental pollution.Type: GrantFiled: October 14, 1999Date of Patent: January 29, 2002Inventors: Ki-Gang Lee, Jung-Hwan Kim
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Patent number: 6309618Abstract: A treating method comprising contacting a fluorine-containing interhalogen compound first with a treating agent for the fluorine component and then with a treating agent for the halogen component, treating agents therefor, and a method for treating exhaust gas containing a fluorine-containing interhalogen compound, comprising filling a treating agent for the fluorine component into the internal cylinder of a treating apparatus having a double cylinder structure consisting of an internal cylinder and an external cylinder, filling a treating agent for the halogen component into the external cylinder, feeding exhaust gas containing a fluorine-containing interhalogen compound into the internal cylinder to travel the internal cylinder and the external cylinder in this order, and then discharging the treated gas from the external cylinder.Type: GrantFiled: October 28, 1999Date of Patent: October 30, 2001Assignee: Showa Denko K. K.Inventors: Manabu Ohira, Junichi Torisu, Yasuyuki Hoshino, Yuji Sakai, Andrei S. Kuznetsov
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Patent number: 6264399Abstract: A method for remediating soil which is contaminated by one or more hydrophobic organic chemicals, comprising: contacting the contaminated soil with an aqueous composition comprising a surfactant prepared by reacting a sulfonate of the formula an amine wherein R1 is hydrogen or methyl, R2 is hydrogen or an alkyl group containing up to 18 carbon atoms, and each of R3, R4 and R5 is individually hydrogen or an alkyl group containing up to 7 carbon atoms and M is an alkali metal, an alkaline earth metal or —NR10R11R12 wherein R10, R11 and R12 are independently hydrogen or hydrocarbyl groups containing from 1 to 22 carbon atoms and removing said aqueous compositions and organic chemicals associated therewith from the soil.Type: GrantFiled: October 14, 1999Date of Patent: July 24, 2001Assignee: The Lubrizol CorporationInventors: Bryan A. Grisso, Richard W. Jahnke
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Process of producing a glassy product for multiple applications and products obtained by the process
Patent number: 6223560Abstract: A process for recycling trash and obtaining a glassy vitreous product by mixing trash with a vitrifying composition comprising 30% Sodium Sulphate, 7% Quartz, 20% Calcium Carbonate, 23% Sodium Carbonate, 13% Organic Sulphate (consisting of 20% Sodium Sulphate and 80% Carbon Hydrates) and 7% Calcium Fluor, the composition comprising the 10-20 weight percentage of the mixture and thermochemically transforming the mixture, the product being used in multiple applications. The glassy product obtained by the process is also provided by the invention.Type: GrantFiled: November 12, 1999Date of Patent: May 1, 2001Assignee: Cerocon S.A.Inventors: Roberto Girotti, Luis Domingo Tatasciore -
Patent number: 6207073Abstract: A method and composition for the remediation of environmental contaminants in soil, sediment, aquifer material, water, or containers in which contaminants were contained, wherein contaminants are reacted with a remediating composition comprising a metal and a sulfur-containing compound to produce environmentally-acceptable, chemically reduced products. The method is useful for treating contaminants such as halogenated hydrocarbons, pesticides, chemical warfare agents and dyes. The remediating composition preferably contains comminuted, commercial grade iron and iron sulfide. The addition of an alcohol to the reactants enhances the rate of the remediation reaction, particularly for contaminants of soils and sediments.Type: GrantFiled: November 8, 1999Date of Patent: March 27, 2001Assignee: The United States of America as represented by the Environmental Protection AgencyInventors: N. Lee Wolfe, Mark G. Cipollone
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Patent number: 6203484Abstract: The invention provided relates to the use of polyvinylpyrrolidone-iodine complexes in combination with gelling agents to produce strong disinfectants which not only physically stabilize biohazardous and infectious wastes but also kill pathogens contained in the wastes. The gelling agents include polyacyrlates that are superabsorbents.Type: GrantFiled: March 24, 1997Date of Patent: March 20, 2001Assignee: BASF CorporationInventors: Anthony Lepore, Siegfried Lang
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Patent number: 6204214Abstract: A pumpable ceramic composition is provided comprising an inorganic oxide, potassium phosphate, and an oxide coating material. Also provided is a method for preparing pumpable ceramic-based waste forms comprising selecting inorganic oxides based on solubility, surface area and morphology criteria; mixing the selected oxides with phosphate solution and waste to form a first mixture; combining an additive to the first mixture to create a second mixture; adding water to the second mixture to create a reactive mixture; homogenizing the reactive mixture; and allowing the reactive mixture to cure.Type: GrantFiled: July 29, 1998Date of Patent: March 20, 2001Assignee: University of ChicagoInventors: Dileep Singh, Arun S. Wagh, Lamar Perry, Seung-Young Jeong
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Patent number: 6203624Abstract: An organomineral decontamination gel that is used to decontaminate surfaces, in particular metal surfaces. The organomineral gel is made up of a colloid solution containing the combination of a mineral viscosing agent and an organic viscosing agent (coviscosant) chosen from among hydrosoluble organic polymers and surfactants. The presence of an organic viscosing agent improves the rheological properties of gels and substantially reduces their mineral content which generates smaller quantities of solid waste. A decontamination process for metal surface which entails applying the organomineral gel onto the surface to be decontaminated, maintaining this gel on the surface and removing the gel from the surface in particular by rinsing is also provided.Type: GrantFiled: November 24, 1998Date of Patent: March 20, 2001Assignee: STMI - Societe des Techniques en Milieu IonisantInventors: Stéphane Bargues, Frédéric Favier, Jean-Louis Pascal, Jean-Pierre Lecourt, Frédérique Damerval
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Patent number: 6191068Abstract: A composition comprising magnesium sulfite, triple super phosphate, and one of limestone and hydroboracite, useful for heavy metal stabilizing, controlling pH and/or removing acid gas from a solid, semi-solid, liquid or gaseous matrix.Type: GrantFiled: February 4, 1999Date of Patent: February 20, 2001Assignee: Bhat Industries, Inc.Inventor: Vasanth K. Bhat
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Patent number: 6180548Abstract: An environment-purifying material is obtained by immersing a carrier with a titanium oxide film coated on its surface or a substrate comprising titanium oxide particles, in a pseudo-body fluid containing an excessive amount of calcium phosphate, and then coating the surface of the substrate with a porous calcium phosphate film that easily adsorbs toxic substances and that is inactive as a photocatalyst.Type: GrantFiled: August 10, 1998Date of Patent: January 30, 2001Assignees: Agency of Industrial Science and Technology, JME Co., Ltd.Inventors: Hiroshi Taoda, Toru Nonami, Fujio Aramaki, Shoshichi Aramaki
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Patent number: 6160195Abstract: A composition for converting asbestos-containing material, covering metal pipes or other metal surfaces, to non-regulated, environmentally benign-materials, and inhibiting the corrosion of the metal pipes or other metal surfaces. The composition comprises a combination of at least two multiple-functional group reagents, in which each reagent includes a Fluro acid component and a corrosion inhibiting compoment. A method for converting asbestos-containing material, covering metal pipes or other metal surfaces, to non-regulated, environmentally benign-materials, and inhibiting the corrosion of the metal pipes or other metal surfaces is also provided.Type: GrantFiled: January 22, 1999Date of Patent: December 12, 2000Assignee: Brookhaven Science AssociatesInventors: Toshifumi Sugama, Leon Petrakis
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Patent number: 6065903Abstract: Methods are disclosed for preparation of chemically-stabilized emulsions of tall oil in water. Temperature and pH are controlled during preparation of the emulsions so as to prevent saponification and neutralization of acids in the tall oil component. The final emulsions have pHs in the range of from about 3.0 to 5.0 and remain phase stable for extended periods of time. Methods are disclosed for using the emulsions for soil treatment to improve soil stabilization and load bearing capacity for roadbed use, for treatment of reclaimed asphalt pavement for reuse as a stabilized base course for roadway construction and for remediation of heavy metal contaminated soil.Type: GrantFiled: December 22, 1998Date of Patent: May 23, 2000Assignee: Vinzoyl Technical Services, L.L.C.Inventor: Michael P. Doyle
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Patent number: 6022489Abstract: Fluorocarbons including perfluorocarbons and hydrofluorocarbons are highly efficiently decomposed by contacting a gaseous fluorocarbon with a reagent comprising carbon and an alkaline earth metal or carbon, an alkaline earth metal and an alkali metal at an elevated temperature, the decomposed halogen being fixed to the reagent.Type: GrantFiled: June 26, 1997Date of Patent: February 8, 2000Assignees: Dowa Mining Co., Ltd., Dowa Iron Powder Co., Ltd., Showa Denko K.K.Inventors: Chiaki Izumikawa, Kazumasa Tezuka, Kazuto Ito, Hitoshi Atobe, Toraichi Kaneko
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Patent number: 5931773Abstract: This invention relates to the treatment of contaminated materials including soils and solids to reduce its permeability, and in particular to chemical treatment of waste or solids containing high levels of heavy metals such as lead, by treating the waste or solid with a single additive or combination of additives including calcium carbonate; reactive magnesium carbonate; reactive calcium magnesium carbonate; magnesium oxide; magnesium hydroxide; ammonium phosphate; diammonium phosphate; phosphoric acid; boric acid; metallic iron; polyphosphoric acid; sodium carbonate; sodium bicarbonate; calcium oxide; calcium hydroxide; sodium hydrogen phosphate; triple super phosphate (TSP); superphosphate; polyphosphoric acid; phosphoric acids; salts of phosphoric acids; P.sub.2 O.sub.5 ; phosphate rock; monoammonium phosphate; disodium hydrogen phosphate; trisodium phosphate; water soluble phosphate; Fe(II); Fe(III); Al(III); chloride; Fe(NO.sub.3).sub.3 ; FeSO.sub.4 ; Fe.sub.2 (SO.sub.4).sub.3 ; FeCl.sub.3 ; Al.sub.Type: GrantFiled: June 2, 1997Date of Patent: August 3, 1999Assignee: Entact, Inc.Inventor: Philip J. Pisani
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Patent number: 5931772Abstract: A composition particularly useful in solidifying liquid wastes for disposal in landfills, including, for example, liquid industrial wastes. The preferred embodiment of the present invention contemplates a composition primarily composed of bauxite tailings that remain after alumina extraction, also known as "red mud". The tailings are dewatered, dried to a low moisture content, sized to an optimal particulate size, and then applied to the liquid waste. The addition of a small amount of pozzolanic material can improve the handling and solidification characteristics of the composition under certain situations, and is provided in an alternative composition.Type: GrantFiled: October 30, 1996Date of Patent: August 3, 1999Assignee: Kaiser Aluminum & Chemical Corp.Inventors: David B. Kirkpatrick, A. Dyer Lafleur
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Patent number: 5908377Abstract: A method of solidifying a liquid oil without heating the liquid oil. The method utilizes a solidifying agent for liquid oil which includes a gel-in-oil forming material (I) and a temporarily protective material (II) for the gel forming material (I), the solidifying agent sealed in a heat resistive container being heated as sealed therein and then mixed with the liquid oil.Type: GrantFiled: September 4, 1996Date of Patent: June 1, 1999Inventor: Tomoyuki Fukuda
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Patent number: 5902392Abstract: This invention involves a novel paint formulation comprising a phosphate or metal sulfide heavy metal reactive compound, a binder, a solubilizing compound and a buffer which acts as a carrier for heavy metal reactive chemicals so that when this novel paint is applied to a heavy metal painted surface and both are subsequently removed, the heavy metal paint waste is rendered non-hazardous under the TCLP test.Type: GrantFiled: July 3, 1996Date of Patent: May 11, 1999Assignees: RMT, Inc., Hoffer's Coatings, Inc.Inventors: Michael L. Henkelman, Michael Bruce Prenosil, Robert Todd Meyers
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Patent number: 5898010Abstract: A red brick comprising waste foundry sand of 30.about.50 wt %, dusts of 5.about.10 wt %, and a remainder of clay. The waste foundry sand and dusts can be efficiently recycled, and the quantity of the sand used, the supply of which sand which is nearly exhausted, can be reduced. The heating temperature in the red brick manufacturing process is remarkably lowered, and the economical efficiency of the manufacturing process is improved greatly by using iron oxide included in dusts, instead of a chemical compound to obtain desired color.Type: GrantFiled: January 3, 1997Date of Patent: April 27, 1999Inventor: Chang-woo Kang
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Patent number: 5895347Abstract: Methods are disclosed for preparation of chemically-stabilized emulsions of tall oil in water. Temperature and pH are controlled during preparation of the emulsions so as to prevent saponification and neutralization of acids in the tall oil component. The final emulsions have pHs in the range of from about 3.0 to 5.0 and remain phase stable for extended periods of time. Methods are disclosed for using the emulsions for soil treatment to improve soil stabilization and load bearing capacity for roadbed use, for treatment of reclaimed asphalt pavement for reuse as a stabilized base course for roadway construction and for remediation of heavy metal contaminated soil.Type: GrantFiled: March 17, 1997Date of Patent: April 20, 1999Assignee: Vinzoyl Technical Services, L.L.C.Inventor: Michael P. Doyle
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Patent number: 5876631Abstract: The present invention generally relates to the formation of organic gels by dissolving organic gelling agents in organic solvents. The aryl cyclohexanol gelling agents employed in this invention are not structurally related to previously known gellation agents and they exhibit potent gellation activity, for example, from 0.2-5%, by weight, of gelling agent is able to immobilize a variety of organic solvents. The gels formed range from optically transparent to slightly translucent, and complete fluidity can be restored by either increasing the temperature (reversible) or by chemical treatment (irreversible).Type: GrantFiled: June 25, 1997Date of Patent: March 2, 1999Assignee: Baylor UniversityInventor: Charles M. Garner
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Patent number: 5867549Abstract: Methods are provided to at least slow the dissolution of silica in an aqueous environment. In the subject methods, the silica surface is contacted with a multivalent metal cation capable of complexing with oxygen atoms present on the silica surface, where contacting is preferably accomplished by introducing a source of the multivalent metal cation into the aqueous environment. The subject methods find particular use in the inhibition of the dissolution of silica comprising neutron poisoning materials employed in the storage of spent nuclear fuel.Type: GrantFiled: September 18, 1996Date of Patent: February 2, 1999Assignee: Electric Power Research Institute, Inc.Inventors: Kenneth O. Lindquist, Thomas C. Haley
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Patent number: 5858267Abstract: According to the present invention, there is provided a method for nonbiologically treating an chlorinated organic compound contained in an environment polluted with the chlorinated organic compound, which comprises the step of introducing silicon into the environment to dechlorinate the chlorinated organic compound.Type: GrantFiled: October 10, 1997Date of Patent: January 12, 1999Assignee: NEC CorporationInventors: Keiji Hirano, Noriyuki Nakayama
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Patent number: 5846278Abstract: A process for determining one or more leachate concentrations of one or more components of a glass composition in an aqueous solution of the glass composition by identifying the components of the glass composition, including associated oxides, determining a preliminary glass dissolution estimator, .DELTA.G.sub.p, based upon the free energies of hydration for the component reactant species, determining an accelerated glass dissolution function, .DELTA.G.sub.a, based upon the free energy associated with weak acid dissociation, .DELTA.G.sub.a.sup.WA, and accelerated matrix dissolution at high pH, .DELTA.G.sub.a.sup.SB associated with solution strong base formation, and determining a final hydration free energy, .DELTA.G.sub.f. This final hydration free energy is then used to determine leachate concentrations for elements of interest using a regression analysis and the formula log.sub.10 (N C.sub.i (g/L))=a.sub.i +b.sub.i .DELTA.G.sub.f.Type: GrantFiled: July 19, 1996Date of Patent: December 8, 1998Assignee: Westinghouse Savannah River CompanyInventors: Carol Maryanne Jantzen, John Butler Pickett, Kevin George Brown, Thomas Barry Edwards
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Patent number: 5846178Abstract: A method is disclosed for reducing the leaching of lead from a lead bearing material or waste. The method includes contacting the material or waste with a water soluble phosphate and a complexing agent, wherein the complexing agent is at least slightly water soluble, whereby a lead product is formed which is less soluble than the lead originally in the material or waste, thereby reducing the leaching of lead from the material or waste as determined by a leach test performed on the material or waste.Type: GrantFiled: March 2, 1998Date of Patent: December 8, 1998Inventor: Keith E. Forrester
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Patent number: 5846894Abstract: A method to produce structural products from benign waste is provided comprising mixing pretreated oxide with phosphoric acid to produce an acid solution, mixing the acid solution with waste particles to produce a slurry, and allowing the slurry to cure. The invention also provides for a structural material comprising waste particles enveloped by an inorganic binder.Type: GrantFiled: March 18, 1996Date of Patent: December 8, 1998Assignee: The University of ChicagoInventors: Dileep Singh, Arun S. Wagh
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Patent number: 5821186Abstract: The present invention are methods for preparing hydrous titanium oxide spherules, hydrous titanium oxide gels such as gel slabs, films, capillary and electrophoresis gels, titanium monohydrogen phosphate spherules, hydrous titanium oxide spherules having suspendible particles homogeneously embedded within to form a composite sorbent, titanium monohydrogen phosphate spherules having suspendible particles of at least one different sorbent homogeneously embedded within to form a composite sorbent having a desired crystallinity, titanium oxide spherules in the form of anatase, brookite or rutile, titanium oxide spherules having suspendible particles homogeneously embedded within to form a composite, hydrous titanium oxide fiber materials, titanium oxide fiber materials, hydrous titanium oxide fiber materials having suspendible particles homogeneously embedded within to form a composite, titanium oxide fiber materials having suspendible particles homogeneously embedded within to form a composite and spherules of bType: GrantFiled: November 1, 1996Date of Patent: October 13, 1998Assignee: Lockheed Martin Energy Research CorporationInventor: Jack L. Collins
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Patent number: 5788623Abstract: This invention relates to the treatment of contaminated materials including soils and solids to reduce its permeability, and in particular to chemical treatment of waste or solids containing high levels of heavy metals such as lead, by treating the waste or solid with a single additive or combination of additives including calcium carbonate; reactive magnesium carbonate; reactive calcium magnesium carbonate; magnesium oxide; magnesium hydroxide; ammonium phosphate; diammonium phosphate; phosphoric acid; boric acid; metallic iron; polyphosphoric acid; sodium carbonate; sodium bicarbonate; calcium oxide; calcium hydroxide; sodium hydrogen phosphate; triple super phosphate (TSP); superphosphate and polyphosphoric acid.Type: GrantFiled: March 15, 1996Date of Patent: August 4, 1998Assignee: Entact, Inc.Inventors: Michael Kell Studer, Philip J. Pisani, Sherry A. Pierce
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Patent number: 5769938Abstract: 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 caking inhibitor, kneaded with water where necessary, then solidified by curing. Harmful metals are thereby stabilized in the thus-solidified cakes and are not released therefrom.Type: GrantFiled: April 2, 1996Date of Patent: June 23, 1998Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Kenji Ueshima, Noboru Ikitsu, Takuji Nomura, Takashi Funahashi, Masakazu Uekita
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Patent number: 5763738Abstract: A composition and methods for converting a chrysotile asbestos-containing material to a non-regulated environmentally benign solid which comprises a fluoro acid decomposing agent capable of dissociating the chrysotile asbestos to non-regulated components, wherein non-regulated components are non-reactive with the environment, and a binding agent which binds the non-regulated components to form an environmentally benign solid.Type: GrantFiled: September 27, 1996Date of Patent: June 9, 1998Assignee: Associated Universities, Inc.Inventors: Toshifumi Sugama, Leon Petrakis
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Patent number: 5753031Abstract: A composition for transforming a chrysotile asbestos-containing material into a non-asbestos material is disclosed, wherein the composition comprises water, at least about 30% by weight of an inorganic acid, and from about 0.1 to about 4% by weight of a hexafluorosilicate of ammonia, an alkali metal or an alkaline earth metal. A method of transforming the asbestos-containing material into a non-asbestos material using the present composition also is disclosed.Type: GrantFiled: September 27, 1996Date of Patent: May 19, 1998Assignee: W. R. Grace & Co.-Conn.Inventor: Jacob Block
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Patent number: 5753032Abstract: A composition for transforming a chrysotile asbestos-containing material into a non-asbestos material is disclosed, wherein the composition comprises water, at least about 30% by weight of phosphoric acid, and from about 0.1 to about 4% by weight of a source of fluoride ions. A method of transforming the asbestos-containing material into a non-asbestos material using the present composition also is disclosed.Type: GrantFiled: September 27, 1996Date of Patent: May 19, 1998Assignee: W. R. Grace & Co.-Conn.Inventor: Jacob Block
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Patent number: 5753033Abstract: A composition for transforming a chrysotile asbestos-containing material into a non-asbestos material is disclosed, wherein the composition comprises water, at least about 30% by weight of a boron tetrafluoride salt, free of or having only small amounts of an inorganic acid, an inorganic acid salt or a mixture thereof. A method of transforming the asbestos-containing material into a non-asbestos material using the present composition also is disclosed.Type: GrantFiled: September 27, 1996Date of Patent: May 19, 1998Assignee: W. R. Grace & Co.-Conn.Inventor: Jacob Block
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Patent number: 5753035Abstract: A composition for transforming a chrysotile asbestos-containing material into a non-asbestos material is disclosed, wherein the composition comprises water, at least about 30% by weight of an inorganic acid, and from about 0.1 to about 4% by weight of a tetrafluoroborate of ammonia, an alkali metal or an alkaline earth metal. A method of transforming the asbestos-containing material into a non-asbestos material using the present composition also is disclosed.Type: GrantFiled: September 27, 1996Date of Patent: May 19, 1998Assignee: W. R. Grace & Co.-Conn.Inventor: Jacob Block