Containing Heavy Metals (epo/jpo) Patents (Class 588/407)
  • Patent number: 11530158
    Abstract: Concrete may be melted to form a glass product. Methods and batch compositions including concrete may be used to produce amorphous silica materials including, but not limited to, glass, container glass, fiber glass, glass bead, glass spheres, sheet or plate glass, glass aggregate, glass sand, abrasives, proppants, foamed glass, and manufactured glass articles. The initial processing steps include preparing a melt batch comprising concrete and, optionally, other components, melting the melt batch, and cooling the melted melt batch. Further processing steps may be utilized to produce the glass article.
    Type: Grant
    Filed: August 22, 2019
    Date of Patent: December 20, 2022
    Assignee: Xaris Holdings, LLC
    Inventor: Scott D. Trom
  • Patent number: 8940958
    Abstract: Method for the stabilization of contaminants within a material selected from soils, mining tailings and by-products, sludge wastes and industrial wastes, by mixing the material with an alum sludge composition. The composition includes one or more aluminum compound(s) and/or complex(es) together with a reactive carbon material.
    Type: Grant
    Filed: September 30, 2010
    Date of Patent: January 27, 2015
    Assignees: Commonwealth Scientific and Industrial Research Organisation, Ziltek Pty Ltd
    Inventor: Michael John McLaughlin
  • Patent number: 8585824
    Abstract: The invention relates to a method of ablating a surface layer of a wall by sweeping the said layer, comprising: a step of directional control by an optical deflector of a plurality of pulsed laser beams; a step of ablating the layer on impact zones created by the plurality of laser beams, each impact zone being defined by a centre and by a characteristic dimension; the method is characterized in that the impact zones are disjoint, the distance between each centre of the impact zones being equal to at least ten times the largest characteristic dimension of the impact zones. The invention also relates to a corresponding device.
    Type: Grant
    Filed: December 18, 2009
    Date of Patent: November 19, 2013
    Assignee: Commissariat à l'Energie Atomique et aux Energies Alternatives
    Inventors: François Champonnois, François Beaumont, Christian Lascoutouna
  • Patent number: 8475080
    Abstract: Provided is a method for remediating arsenic-contaminated soil, including: a collection step of collecting arsenic-contaminated soil; a washing step of adding the collected soil to a washing solution, which is acidic in nature and provides reducing conditions to the soil, so as to remove arsenic from the soil and transfer the removed arsenic to the washing solution; a solid-liquid separation step of separating the soil and the washing solution from each other after the washing step; and a post-treatment step of removing arsenic from the washing solution, which was separated in the solid-liquid separation step, and employing the soil for remediation.
    Type: Grant
    Filed: November 5, 2010
    Date of Patent: July 2, 2013
    Assignee: Korea Institute of Geoscience and Mineral Resources (Kigam)
    Inventors: Jae-Gon Kim, Jung-Hwa Lee, Yong-Chan Cho, Joo-Sung Ahn, Choon-Oh Lee, Ho-Cheol Song
  • Patent number: 8471089
    Abstract: The instant invention relates to a process and plant for the transformation of dangerous wastes containing chromium six as contaminant into non dangerous wastes that can be stored without special care and will be degraded in the environment without time limit. The process basically consists of milling, extracting chromium six in liquid phase and under controlled conditions of stirring, time and temperature, proceeding then, through reduction, to transform the chromium six in chromium three and then precipitating as chromium trioxide, through gasification. The solid resulting from the transformation process can be used as raw material for the manufacturing of firebricks or eventually for the manufacturing of bricks used in the building industry through a process not included in the instant description.
    Type: Grant
    Filed: December 21, 2011
    Date of Patent: June 25, 2013
    Assignee: Cromotecnica Mexico
    Inventor: Francisco Garcia Fernandez
  • Patent number: 8247365
    Abstract: A detoxicant solution includes 0.1 to 50 parts by weight of at least one Friedel-Crafts reagent (Lewis acids) (I); 0.5 to 80 parts by weight of one or more of the following specific solvents (II): dimethyl sulfoxide, 1,3-dimethyl-2-imidazolidinone or octamethylcyclotetrasiloxane; and 1 to 80 parts by weight of an alcoholic solvent (III). The term “parts by weight” relates in each case to 100 parts by weight of the complete detoxicant solution.
    Type: Grant
    Filed: March 13, 2007
    Date of Patent: August 21, 2012
    Assignee: OWR AG
    Inventor: Klaus Hoffmann
  • Patent number: 8242323
    Abstract: This invention provides a process for the detoxification of chemical agents including chemical warfare agents such as sulfur mustards, nitrogen mustards, nerve agents of G and V type, lewisite and adamsite by reacting the chemical agents with hydroxyl radicals at a pH greater than 7.0 to detoxify the agents and to render them suitable for disposal. The process can be used on-site and can be easily scaled to fairly large sizes.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: August 14, 2012
    Inventors: Ravi Jain, Abhinav Jain
  • Patent number: 8217215
    Abstract: The instant invention relates to a process and plant for the transformation of dangerous wastes containing chromium six as contaminant into non dangerous wastes that can be stored without special care and will be degraded in the environment without time limit. The process basically consists of milling, extracting chromium six in liquid phase and under controlled conditions of stirring, time and temperature, proceeding then, through reduction, to transform the chromium six in chromium three and then precipitating as chromium trioxide, through gasification. The solid resulting from the transformation process can be used as raw material for the manufacturing of firebricks or eventually for the manufacturing of bricks used in the building industry through a process not included in the instant description.
    Type: Grant
    Filed: May 26, 2011
    Date of Patent: July 10, 2012
    Assignee: Cromotecnica Mexico S.A. de C.V.
    Inventor: Francisco Garcia Fernandez
  • Patent number: 8188329
    Abstract: A recycling furnace and method are provided for processing potentially explosive precious metal-containing materials having organic fractions that combust with great energy, the furnace including a switching facility for alternating operation of a burning-off chamber of the furnace between: (A) pyrolysis or carbonization under protective furnace gas in an atmosphere comprising maximally 6 wt-% oxygen, and (B) oxidative combustion of the organic fractions including carbon. The furnace has indirect heating and a control that determines the end of the pyrolysis or carbonization by a sensor and controls the switching facility to supply air or oxygen to the interior of the furnace. Steps (A) and (B) are carried out sequentially in the furnace chamber, wherein neither the batch is changed, nor the furnace is opened. After the end of step (A) is determined, step (B) proceeds right after the pyrolysis or carbonization by supplying air or oxygen.
    Type: Grant
    Filed: March 27, 2008
    Date of Patent: May 29, 2012
    Assignee: Heraeus Precious Metals GmbH & Co. KG
    Inventors: Christian Nowottny, Horst Meyer, Matthias Grehl, Dieter Schäfer, Hans-Joachim Alt, Wilhelm Glab
  • Patent number: 8057378
    Abstract: A method for the decontamination and solidification of dredged material is described. The method includes, in the following order, (a) adding a lime-based binder to dredged material to form a mixture; (b) letting the mixture cool to about ambient temperature; and (c) adding to the mixture a chelating agent. The order of the steps may not be reversed without affecting the effectiveness of the treatment of the dredged material. A method for producing filler containing decontaminated and solidified dredged material is also described. The method includes treating dredged material with a lime-based binder and a chelating agent and adding the resulting mixture to concrete.
    Type: Grant
    Filed: March 18, 2002
    Date of Patent: November 15, 2011
    Assignee: The Trustees of Columbia University in the City of New York
    Inventors: Sofiya Kozlova, Semyon A. Shimanovich, Christian Meyer
  • Patent number: 8007748
    Abstract: Perlite, particularly, perlite in powdered form, is employed to adsorb metals and metal compounds from fluids, in particular gases at elevated temperature. Treatment of perlite by boiling with sulfuric acid or suspending in a suspension of sulfur in carbon disulfide has been shown to significantly expand the surface area of perlite, thus increasing the efficiency of the process. In select embodiments, powdered perlite is treated to expand its surface area and injected into a fluid stream, such as flue gas, held for a specific retention period, and removed for subsequent disposal. In other embodiments powdered perlite is provided in an adsorption bed. Fluids containing metals or metal compounds in vapor form are permitted to pass through the adsorption bed until the expanded perlite powder is saturated (exhausted) with the metal and metal compounds adsorbed thereon. The perlite is then replaced, disposing of the exhausted perlite.
    Type: Grant
    Filed: March 10, 2009
    Date of Patent: August 30, 2011
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Veera M. Boddu, Tushar K. Ghosh, Kent James Hay, Dabir S. Viswanath
  • Patent number: 7915475
    Abstract: A novel method for remediating metals includes treating the metals with a mesoporous nanocomposite such as HMS, MCM-41 or MCM-48. The metal is preferably lead but can be at least one metal selected from Pb, Hg, Cd, Zn, Sn, As, Sb, In, Se, Ga, Te, Bi, Ni, Cu, Mo, Ni, Cu, Sr, Ba or Co. The treating is preferably performed at a pH of about 4 to about 12. In the invention, the treating can also include desorbing the metal from the mesoporous nanocomposite at a pH of about 2 or less.
    Type: Grant
    Filed: July 2, 2004
    Date of Patent: March 29, 2011
    Assignee: Christopher Newport University
    Inventors: Tarek Abdel-Fattah, Larry K. Isaacs
  • Publication number: 20110004043
    Abstract: A process for decontaminating a medium polluted with metals and hydrophobic organic compounds (HOC) includes providing an acidic slurry of water, acid, chloride salt, surfactant, and the polluted medium. Flotation is preformed on the acidic slurry to form a HOC-rich froth and an HOC-depleted slurry and the froth is recovered. The slurry is separated to obtain a treated solid and a liquid effluent rich in metallic ions. Preferably, the process also includes recuperating the metals by chemical precipitation and/or electrodeposition to produce a treated solution. Also provided are a decontaminant having an acid, a chloride salt, and a surfactant as well as a chemical kit for decontaminating the polluted medium including the decontaminant in which the acid, chloride salt and surfactant can be mixed with polluted medium in the presence of water before removing at least a portion of the metals and HOC from the polluted medium.
    Type: Application
    Filed: October 2, 2008
    Publication date: January 6, 2011
    Applicant: Institut National De La Recherche Scientifique (INRS)
    Inventor: Anselmo Basso
  • Patent number: 7829754
    Abstract: A soil cleaning method (phytoremediation) of absorbing a contaminating substance contained in a contaminated soil by a plant to clean the soil. An object of the present invention is to provide a method of cleaning a contaminated soil which performs cleaning of a soil containing heavy metals in a shorter term than before and, at the same time, utilizes phytoremediation having little influence on the environment. The object is attained by absorbing heavy metals by a plant of Polygonaceae family, Fagopyrum genus, and, at the same time, adding a biodegradable chelating agent to a contaminated soil in order to assist the absorption. And, a biodegradable chelating agent having the high heavy metal dissolving out ability not only enhances the cleaning efficacy but also reduces secondary influence on the environment.
    Type: Grant
    Filed: September 9, 2005
    Date of Patent: November 9, 2010
    Assignee: Chubu Electric Power Co., Inc.
    Inventors: Hideo Tamura, Takeshi Sato, Munechika Honda
  • Patent number: 7714182
    Abstract: A method for treating bottom ash from a waste incineration plant. The invention relates in particular to a method for treating bottom ash from a domestic waste incineration plant. In accordance with the invention bottom ash having a size ranging up to 2 mm is treated by removing a previously determined component. The treatment comprises at least one of the following steps: the removal of organic components, the removal of heavy metals, the removal of ions and the removal of a fraction having a size of up to 50 ?m. It is preferred for the nonferrous heavy metals to be removed and the ferrous metals to remain in the fraction. Most preferably at least one of the treatment steps comprises a wet treatment.
    Type: Grant
    Filed: January 23, 2008
    Date of Patent: May 11, 2010
    Assignees: Technische Universiteit Delft, Gemeente Amsterdam, Afval Energie Bedrijf
    Inventors: Peter Carlo Rem, Hans Van Craaikamp, Simon Peter Maria Berkhout, Wil Sierhuis, Laurens Anton Van Kooy
  • Patent number: 7378037
    Abstract: To treat an organotin compound in a liquid at low cost. Addition of iron oxide into a liquid containing an organotin compound allows trapping of the organotin compound in the liquid by the iron oxide, and reduction of the organotin compound concentration in the liquid. Various iron oxides such as FeO, Fe2O3(iron sesquioxide), and Fe3O4 (iron oxide black) may be used, but iron oxide black is preferred. Such the method of treating a liquid may be applied to polluted seawater at a harbor to allow reduction of the organotin compound concentration in the seawater and purification of the harbor.
    Type: Grant
    Filed: June 6, 2006
    Date of Patent: May 27, 2008
    Assignee: Miura Co., Ltd.
    Inventors: Katsuhisa Honda, Tomofumi Takahashi
  • Publication number: 20080107487
    Abstract: A process to transform solid, low-level, radioactive waste produced from oil and gas production into a form that may be safely disposed of, such as by re-injection into geologic formations in the Earth.
    Type: Application
    Filed: April 25, 2006
    Publication date: May 8, 2008
    Inventor: John Charles Matthews
  • Patent number: 7360967
    Abstract: A process to transform solid, low-level, radioactive waste produced from oil and gas production into a form that may be safely disposed of, such as by re-injection into geologic formations in the Earth.
    Type: Grant
    Filed: April 25, 2006
    Date of Patent: April 22, 2008
    Assignee: University of Mississippi
    Inventor: John Charles Matthews
  • Patent number: 7314512
    Abstract: 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: Grant
    Filed: December 12, 2003
    Date of Patent: January 1, 2008
    Assignee: MT2, LLC
    Inventors: James Barthel, Mark A. Peters
  • Patent number: 7255798
    Abstract: A method for recovering and recycling catalyst coated fuel cell membranes includes dissolving the used membranes in water and solvent, heating the dissolved membranes under pressure and separating the components. Active membranes are produced from the recycled materials.
    Type: Grant
    Filed: March 24, 2005
    Date of Patent: August 14, 2007
    Assignee: Ion Power, Inc.
    Inventors: Stephen Grot, Walther Grot
  • Patent number: 7132584
    Abstract: A method of using high temperature plasma to disintegrate waste containing titanyl phthalocyanine (TiOPc) comprises heating a mixture of titanyl phthalocyanine (TiOPc), a vitrifying material and optionally selected waste soil to a temperature of 1,220° C. to 10,000° C. until the mixture becomes a molten lava. The plasma breaks down the titanyl phthalocyanine and encapsulates the benign products in the lava that is chemically very stable. Since the titanyl phthalocyanine (TiOPc) is disintegrated completely in the process, the titanyl phtbalocyanine (TiOPc) no longer represents a threat to the environmental.
    Type: Grant
    Filed: February 11, 2004
    Date of Patent: November 7, 2006
    Assignees: Labeltek Inc., Tai Chan Environmental Technologies Ltd.
    Inventors: Yu-Ting Shen, Chih-Wei Kuo, Ling Lu, Chan-Yi Chen, Chang-Lung Hsieh, Chi-Ho Fu, Bun-Ching Liu, Fu-Chen Liu, Chen-Lin Huan
  • Patent number: 7122167
    Abstract: A supercritical oxidation process carried out in water is capable of oxidizing “organics” in precious metal organic compositions such as heterogeneous (Pt/C) or homogeneous precious metal catalysts and producing a precious metal oxide with few by-products and low losses of precious metal.
    Type: Grant
    Filed: April 10, 2001
    Date of Patent: October 17, 2006
    Assignees: Johnson Matthey Public Limited Company, Chematur Engineering AB
    Inventors: Simon Collard, Anders Gidner, Brian Harrison, Lars Stenmark
  • Patent number: 6984769
    Abstract: 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: Grant
    Filed: April 3, 2003
    Date of Patent: January 10, 2006
    Assignee: MT2, LLC
    Inventors: James Barthel, Mark A. Peters
  • Patent number: 6962562
    Abstract: Process for rendering inert a sludge (1) comprising heavy metals and organic matter, according to which phosphoric acid (2) is added to the sludge and the latter is subjected to calcination (6). A hydraulic binder (9) is mixed with the product of the calcination (7) and mixed with water (8). The resulting mixture (11) is subjected to setting and curing.
    Type: Grant
    Filed: October 16, 2001
    Date of Patent: November 8, 2005
    Assignee: Solvay (Societe Anonyme)
    Inventors: Guy Depelsenaire, René Derie