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| Number | Title | Issue Date |
| 7442305 | Downwash process bioremediation system Disclosed herein is a method for the removal of petroleum hydrocarbon and toxic constitutes from contaminated soils and sediment. The method comprises the removal of contaminated materials from soils and performs bioremediation for the removed contaminated materials... | 10/28/2008 |
| 7271199 | Removal of PCB and other halogenated organic contaminants found in ex situ structures Emulsified systems of a surfactant-stabilized, biodegradable water-in-solvent emulsion with bimetallic particles contained with the emulsion droplets are useful at removing PCBs from ex situ structures. The hydrophobic emulsion system draws PCBs through the solvent/... | 09/18/2007 |
| 7235181 | Metal powder for decomposition of organic halogen and method for manufacturing the same The present invention is to provide metal powder capable of decomposing and remedying various range of organic halogen compounds including organic halogen compounds which are difficult to be decomposed by a conventional decomposition and remediation method. Metal po... | 06/26/2007 |
| 7166228 | Method of treating a subsurface formation with ferrous iron to reduce contaminants to harmless species A method for treating a subsurface formation with a ferrous compound, to reduce a contaminant therein, involves introducing into the subsurface formation a ferrous compound in combination with sodium hydrosulfite in an amount sufficient to substantially prevent prec... | 01/23/2007 |
| 7163205 | Recovery apparatus for fragmented ballistic materials and method for collection of the same The present invention provides a ballistic testing recovery apparatus and method for allowing post impact analysis of pyrophoric projectile debris wherein the apparatus comprises a containment chamber having an interior volume filled with a solvent-soluble granulate... | 01/16/2007 |
| 7140122 | Vacuum treatment of waste stream with anti-incrustation measures A method of treating a waste stream comprises a vacuum treatment to promote disintegration of the waste material by “flash vapor” production, causing a swiftly vaporizing fraction inside the material to literally explode or shred apart the matrix of the material... | 11/28/2006 |
| 7138063 | Method of removing arsenic and other anionic contaminants from contaminated water using enhanced coagulation An improved water decontamination process comprising contacting water containing anionic contaminants with an enhanced coagulant to form an enhanced floc, which more efficiently binds anionic species (e.g., arsenate, arsenite, chromate, fluoride, selenate, and borat... | 11/21/2006 |
| 7128498 | Method of containing and at least partially remediating contaminants in soils, including sediments In one application for containing and remediating contaminants in sediments, employing a geocomposite eliminates the need for a thick cap or removal and subsequent ex situ treatment of the sediment. A geocomposite with at least one layer of reactive material is plac... | 10/31/2006 |
| 7114880 | Process for the excavation of buried waste Disclosed is a method of excavating large quantities of non-homogenous radioactive contaminated waste, desirably without releasing radioactive contaminated dust or exposing personnel to its hazards. The excavation of buried waste is performed in the presence of a su... | 10/03/2006 |
| 7115203 | Remediation with ozone of sediments containing organic contaminants A system for treating sediments contaminated with organic contaminants, such as polychlorinated biphenyls (PCBs) and other contaminants polyaromatic hydrocarbons (PAHs) and dichlorodiphenyltrichloroethane (DDT) includes treating the sediments with ozone to react the... | 10/03/2006 |
| 7105084 | Hybrid flow pond A passive treatment system for removing metals, especially manganese, from mine drainage and other aqueous solutions. The Hybrid Flow Pond (HFP) is an open, pond-like structure utilizing a horizontal or vertical operational flow path through a bed of treatment media... | 09/12/2006 |
| 7101115 | stabilization of persistent hydrophobic organic contaminants in sediments using coal- and wood-derived carbon sorbents To overcome obstacles faced by current remediation technologies for contaminated sediments, the present invention provides a new strategy based on in situ control of hydrophobic organic contaminants (HOC) bioavailability. The strategy employs the addition of activat... | 09/05/2006 |
| 7077963 | Processes for water treatment The invention provides compositions comprising bauxite refinery residues that have been reacted with sufficient calcium and magnesium ions that they have a reaction pH of less than 10.5, and one or more water treating additives. The invention also provides processes... | 07/18/2006 |
| 7059805 | Process for environmental pacification of drill cuttings The process for environmental pacification of drill cuttings which contain drilling fluid residue is characterized by mixing said cuttings with dehydrated limestone coke ash in the presence of water. Upon mixing the drilling fluid residue becomes entrapped into a no... | 06/13/2006 |
| 7037423 | Method for removal and detoxication of dissolved metals in a rainwater discharge The present invention provides a water treatment apparatus and method for reducing toxicity in zinc containing acid stormwater runoff, the apparatus comprising a first filter layer of high calcium material a last filter layer comprising a drainpipe arrangement embed... | 05/02/2006 |
| 7020980 | Vacuum treatment of waste stream with anti-incrustation measures A method of treating a waste stream comprises a vacuum treatment to promote disintegration of the waste material by “flash vapor” production, causing a swiftly vaporizing fraction inside the material to literally explode or shred apart the matrix of the material... | 04/04/2006 |
| 7022194 | Method of treating a paint booth dry filter The present invention includes a composition having detackifying and detoxifying properties such that the composition is useful for detackifying and detoxifying paint particles in spray booth water and for treating a paint booth dry filter to render the filter fire ... | 04/04/2006 |
| 7022240 | Method for on-site treatment of oil and gas well waste fluids An apparatus and method for on-site treatment and reclamation of oil and gas well waste water or fracturing fluids. The mobile treatment process and apparatus provide both chemical precipitation and filtration to treat the drilling fluid waste to a technically and e... | 04/04/2006 |
| 7011756 | In situ immobilization of metals within density variant bodies of water A method for treating (in situ) large bodies of water contaminated with heavy metals and having varying density stratas to immobilize the contaminant metals is disclosed. The method, or process for (in situ) immobilization of metals is focused on treating large bodi... | 03/14/2006 |
| 7008964 | Contaminant removal from natural resources A zero-valent metal emulsion containing zero-valent metal particles is used to remediate contaminated natural resources, such as groundwater and soil. In a preferred embodiment, the zero-valent metal emulsion removes heavy metals, such as lead (Pb), from contaminate... | 03/07/2006 |
| 6994491 | Gas recovery from landfills using aqueous foam Hydrogen sulfide in a landfill is reduced by dispersing a hydrogen sulfide control agent, such as an iron compound, into the landfill. The hydrogen sulfide control agent may be a component of an injected foam. Gas is also recovered from the landfill by introducing w... | 02/07/2006 |
| 6991405 | Application of inert gas mixtures to prevent and/or to control sulfide mineral oxidation and the generation of acid rock drainage A system, computer program product and method of preventing and controlling sulfide mineral oxidation and generation of acid rock drainage in a mass of sulfidic waste is provided. The mass of sulfidic waste includes a cover. The method involves applying under the co... | 01/31/2006 |
| 6984329 | Coated microbubbles for treating an aquifer or soil formations A microporous diffuser includes a first elongated member including at least one sidewall having a plurality of microscopic openings. The sidewall defines an interior hollow portion of the member. The diffuser has a second elongated member having a second sidewall ha... | 01/10/2006 |
| 6962561 | Method for biosolid disposal and methane generation A method for the disposal of biosolids, the method comprising providing a supply of biosolids; selecting an introduction formation below a ground surface, the introduction formation comprising a natural gas formation in a gas accumulation zone; introducing the bioso... | 11/08/2005 |
| 6929423 | Gas recovery from landfills using aqueous foam Gas is recovered from a landfill by introducing water into the landfill to promote digestion of organic matter in the landfill, and removing from the landfill gas produced by digestion. The improvement comprises the introduction of water as part of an aqueous foam, ... | 08/16/2005 |
| 6926837 | Process for the treatment of waste materials The invention relates to a mixture and a process for the treatment of waste materials and the use of the mixture for the treatment of waste materials and waste material treated therewith. The mixture comprises (A) at least one zinc salt of a saturated o... | 08/09/2005 |
| 6921477 | Groundwater treatment system and method A groundwater treatment system, which includes subterranean inlet, treatment, and outlet portions. The inlet portion is configured to collect groundwater from an aquifer. The treatment portion includes a replaceable treatment media and is configured to receive the g... | 07/26/2005 |
| 6893570 | Metal removal process The slag-only Vertical Flow Pond, which we have developed, is a passive treatment component capable of removing large concentrations of metals, especially manganese, from water to extremely low concentrations while neutralizing acidity and producing alkalinity. An i... | 05/17/2005 |
| 6878281 | Wastewater management system A method of and an apparatus for rejuvenating a wastewater treatment system of the type including a septic tank, an aerobic treatment unit or the like connected by a pipe to a plugged downstream soil absorption system includes a wastewater treatment unit which is in... | 04/12/2005 |
| 6843617 | Stabilization of toxic metals in a waste matrix and pore water A method is provided for stabilizing toxic materials in a waste matrix and in the pore water of the waste matrix. The method includes the steps of combining with the waste matrix (and pore water) an agent for controlling the oxidation-reduction potential of the matr... | 01/18/2005 |
| 6830695 | In situ remediation process using divalent metal cations An in situ process for treating ambient solid materials (e.g., soils, aquifer solids, sludges) by adding one or more divalent metal cations to the ambient solid material. The added divalent metal cations, such as Cu2+ or Zn2+, combine with meta... | 12/14/2004 |
| 6720176 | Liquid chemical compositions containing soluble sulfates and methods for anaerobic bioremediation Liquid chemical compositions are disclosed for anaerobic biodegradation, detoxification, and transformation of toxic organic and inorganic compounds in a contaminated geologic media under reducing conditions, including, but not limited to, denitrifying, manganese-re... | 04/13/2004 |
| 6688811 | Stabilization method for lead projectile impact area A method for reducing the leaching of lead from a lead projectile impact area acting to collect or stop such projectiles includes contacting the lead projectile impact area with a seed of dry granular lead stabilizing agents. This seeding or coating of le... | 02/10/2004 |
| 6648551 | Method for stabilizing and reducing permeability of geologic or waste materials Methods for inducing the precipitation of substantially water insoluble mineral carbonates in pores, spaces and fractures by conveying a carbon-dioxide (ie. CO2) bearing gaseous phase or an oxidised-carbon-bearing aqueous phase into spaces wher... | 11/18/2003 |
| 6609578 | Shale hydration inhibition agent and method of use A water-base fluid for use in drilling wells and other drilling operation includes a shale which swells in the presence of water. The fluid preferably includes: an aqueous based continuous phase, and a shale hydration inhibition agent having the formula: ... | 08/26/2003 |
| 6592294 | Situ formation of apatite for sequestering radionuclides and heavy metals Methods for in situ formation in soil of a permeable reactive barrier or zone comprising a phosphate precipitate, such as apatite or hydroxyapatite, which is capable of selectively trapping and removing radionuclides and heavy metal contaminants from the ... | 07/15/2003 |
| 6561733 | Method and apparatus for treating landfills A method for treating a landfill formation. The method includes the steps of preparing a water soluble resin solution, preparing a catalyst solution, and introducing separate streams of the resin and the catalyst into the landfill formation in a manner th... | 05/13/2003 |
| 6550552 | Method for the removal and recovery of the oil component from drill cuttings Oil drill cuttings, containing an oil-based mud, may be treated by mixing the cuttings with an organic solvent. The oil drill cuttings are then separated from the organic solvent and extracted oil. The organic solvent is then separated from the oil, and m... | 04/22/2003 |
| 6543964 | Stabilization of arsenic-contaminated materials A method for stabilizing arsenic in a waste matrix includes the steps of combining with the waste matrix an agent for controlling the oxidation-reduction potential of the matrix, an agent for controlling the pH of the matrix and an agent for adsorbing or ... | 04/08/2003 |
| 6544426 | Method of quickly decomposing and removing an organic chlorine compound by a hollandite-type photocatalyst A method of quickly decomposing and removing an organic chlorine compound, which comprises coating a liquid containing an organic chlorine compound on the surface of a photocatalyst so that the liquid does not flow, said photocatalyst comprising a holland... | 04/08/2003 |
