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| Number | Title | Issue Date |
| 7927039 | Method for improving vermiculite's intake of ammonium ions, absorption material, its uses and method of removing ammonium from environment The invention relates to a method for improving vermiculite's intake of ammonium, in which method heating of the crude vermiculite is conducted to a temperature where vermiculite's third dehydration step takes place, the temperature being lower than the temperature ... | 04/19/2011 |
| 7828495 | System and method of chemical injection using an adjustable depth air sparging system A supplemental fluid adjustable depth air sparging system which is used to remediate contaminants from groundwater within the soil. An adjustable depth air injection point injects compressed air mixed with a chemical oxidizer or nutrient into saturated or groundwate... | 11/09/2010 |
| 7748931 | Chemical injection using an adjustable depth air sparging system A supplemental fluid adjustable depth air sparging system which is used to remediate contaminates from groundwater within the soil. An adjustable depth air injection point injects compressed air, and an adjustable depth chemical injection point injects a chemical ox... | 07/06/2010 |
| 7621696 | Directional microporous diffuser and directional sparging A method for treating contaminates includes emitting plural streams of a fluid into a soil formation with the streams having different radii of influences in different directions. A direction microporous diffuser includes a holder member having plural compartments a... | 11/24/2009 |
| 7547160 | Method of delivering a treatment substance to a target substance in a treatment zone A method of delivering a treatment substance to a target substance in a treatment zone is disclosed. The method comprises providing a treatment substance responsive to an electric or magnetic field such that the treatment substance experiences a kinetic force when d... | 06/16/2009 |
| 7455477 | Compound, method for stabilizing shwertmannite, method for clarifying polluted water or polluted soil, and method for adsorbing phosphoric acid A new compound represented by a composition formula Fe8O8 (OH)8-2x((SO4)a, (HPO4)b)x (a+b=x, 1≦x≦1.75, 0 | 11/25/2008 |
| 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 |
| 7427177 | Method of using pulsed ozone to treat soils containing organic contaminants A method of treating a solid matrix containing organic contaminants is provided. The method comprises the steps of a) injecting ozone into the solid matrix for a period of time known as the pulse duration; b) interrupting the injection of ozone into the solid matrix... | 09/23/2008 |
| RE40448 | Method for remediation of aquifers A method for remediating aquifers and groundwater contaminated, for example by toxic halogenated organic compounds, certain inorganic compounds, and oxidized heavy metals and radionuclides, using the introduction of an innocuous oil, preferably an edible, food grade... | 08/05/2008 |
| 7360595 | Method and system for underground treatment of materials A method for underground treatment of subsurface materials comprises providing an injection pattern and a recovery pattern, the injection pattern and the recovery pattern located proximate to a subsurface treatment zone and at least one of the injection pattern and ... | 04/22/2008 |
| 7341108 | Well downhole liquid dispenser A well downhole liquid dispenser is disclosed in which an inlet/discharge port assembly is provided having an inlet port in fluid communication with the shoulders of a conical piston. The point of the conical piston is in physical contact with the discharge channel ... | 03/11/2008 |
| 7312184 | Recovery composition and method A method and composition are described for improving recovery of oil from an oil reservoir. The method includes adding an effective amount of a fatty acid alkyl ester oil recovery composition to an oil reservoir and recovering oil from the reservoir. The composition... | 12/25/2007 |
| 7303608 | Groundwater reactive gas injection and venting system for a groundwater remediation system In a system for collecting gas from a subsurface body of contaminated water, a site collects unabsorbed reactive gas from the subsurface body of contaminated water. In addition, a vacuum source is connected to the site. Furthermore, a controller regulates a flow of ... | 12/04/2007 |
| 7301066 | Method of making and using nanoscale metal Methods of treating ground water and methods for reducing contaminants (e.g., chlorinated compounds in contaminated ground water) to harmless compounds in the presence of an elemental metal treatment composition. Said methods comprise injecting a treatment solution ... | 11/27/2007 |
| 7290959 | Electrode heating with remediation agent A remediation method and system is disclosed. A plurality of conductors is installed into the subsurface to introduce electrical current to produce heat in the subsurface. One or more agents are released into the subsurface to cause or accelerate the decomposition o... | 11/06/2007 |
| 7287933 | Process for the remediation of soil polluted by organic compounds An improved process is described for the removal of organic pollutants from soil by extraction with a lipophylic solvent, wherein the improvement consists in the fact that the purified soil is treated with water to remove the residual solvent. This process allows th... | 10/30/2007 |
| 7282153 | Method for removal of arsenic from water A method for removing arsenic from water by contacting water with a strong base anion exchange resin comprising at least one metal ion or metal-containing ion whose arsenate salt has a Ksp no greater than 10−5, provided that the metal is not ... | 10/16/2007 |
| 7273962 | Compositions and methods for removing heavy metals from contaminated samples using membranes provided with purified metallothionein (MT) proteins Devices, such as solid supports having metal binding proteins, such as metallothionein proteins, bound thereto are disclosed for removing metals from substrates in need of having such metals removed therefrom. Specifically membranes having metallothionein proteins f... | 09/25/2007 |
| 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 |
| 7270499 | Soil and/or groundwater remediation process A method of treating contaminants in soil and/or groundwater including adding a source of a peroxide and ozone to the in situ environment in amounts capable of producing reactive species sufficient to oxidize at least one of the contaminants without acidification of... | 09/18/2007 |
| 7264419 | System and method for remediating contaminated soil and groundwater in situ A system and method for the in-situ removal or remediation of contaminants in a soil formation containing a subsurface groundwater aquifer, the method comprising the steps of: injecting a first oxidant into the aquifer at an injection point to create a volume of inf... | 09/04/2007 |
| 7264734 | Method for treating dredged material The present invention provides a method for treating dredged material in which liquid is first added to the dredged material, and dewatering the dredged material to obtain a filtrate and a solid portion. Contaminants are removed from the dredged material by at least... | 09/04/2007 |
| 7255791 | In situ method and apparatus for biodegradation of alkyl ethers and tertiary butyl alcohol A method and apparatus for the in situ purification of aquifers contaminated with ethers and/or alcohols using a bacterial culture, a method of delivering the culture to the subsurface, and an oxygen delivery system. ... | 08/14/2007 |
| 7252986 | Process for the biodegradation of hydrocarbons and ethers in subsurface soil by introduction of a solid oxygen source by hydraulic fracturing A bioremediation of subsurface soil formations contaminated with hazardous wastes is achieved by hydraulic fracturing of the subsurface soil formation with simultaneous introduction of sodium percarbonate coated with polyvinylidene chloride as a solid oxygen source ... | 08/07/2007 |
| 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 |
| 7213642 | Multi-fluid sparging A diffuser useful for sparging to remove contaminant in situ is described. The diffuser includes a first elongated member having a sidewall with a first portion of the length of the sidewall being microporous, and a second portion of the length of the sidewall havin... | 05/08/2007 |
| 7175770 | Methods and systems for groundwater remediation The present invention provides systems and methods for the remediation of contaminated water, soils and/or sediments. In some embodiments, the system includes one or more conduits for injection of hydrogen peroxide and ozone based reagents. ... | 02/13/2007 |
| 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 |
| 7162834 | Methods for enhancing plant growth using hydrogen gas This invention provides methods of enhancing plant growth or yield, comprising exposing soil to hydrogen gas (H2), and growing plants in the soil. The H2 gas employed can be generated by electrolysis of water, produced by H2 evolving... | 01/16/2007 |
| 7160471 | In-situ generation of oxygen-releasing metal peroxides A method for remediation of contaminants in soil and groundwater is disclosed. The method generates oxygen releasing solids in groundwater or soil by injecting an aqueous energetic oxidant solution containing free radicals, oxidative conditions can be created within... | 01/09/2007 |
| 7153061 | Method of in situ retrieval of contaminants or other substances using a barrier system and leaching solutions Processes and methods relating to treating contaminants and collecting desired substances from a zone of interest using subterranean collection and containment barriers. Tubular casings having interlock structures are used to create subterranean barriers for contain... | 12/26/2006 |
| 7144362 | Method for chemically stabilizing waste materials containing multivalent oxyanions A method of chemically stabilizing multivalent oxyanions in residue materials such as wastes from glass manufacturing facilities which method involves adding to the residue material cement, lime and aluminum sulfate to form a clay-like material having a low leachabi... | 12/05/2006 |
| 7135605 | Metal binding proteins and associated methods Metal binding proteins, associated compositions and methods for their production and use are disclosed. The metal binding proteins include have amino acid sequences analogous to at least one metal binding protein, and conservative amino acid substitutions thereof fr... | 11/14/2006 |
| 7128153 | Treatment of a hydrocarbon containing formation after heating A method for treating a hydrocarbon containing formation is provided. In one embodiment, heat from one or more heaters may be provided to at least a portion of the formation. Heat may be allowed to transfer from the one or more heaters to at least a part of the form... | 10/31/2006 |
| 7128841 | Dispersed zero-valent iron colloids Stable dispersions of zero-valent iron particles are produced by milling of micro- and nano-scale iron particles (colloids) in the presence of a dispersant or dispersants. ... | 10/31/2006 |
| 7108455 | Carbureted bioventing for enhanced control of in-situ bioremediation A method for removing volatile and semi-volatile contaminants from groundwater in which the contaminants are stripped from the groundwater by sparging with an inert carrier gas and the stripped contaminants are transported into a bioactive zone into which at least o... | 09/19/2006 |
| 7056061 | Remediation of contaminates including low bioavailability hydrocarbons A method of treatment of a contaminated material contaminated with an organic compound. The method includes treating the contaminate with a bioremediation step followed by a chemical oxidation step. The bioremediation step includes contacting the contaminate with a ... | 06/06/2006 |
| 7037946 | Zero-valent metal emulsion for reductive dehalogenation of DNAPLs A zero-valent metal emulsion is used to dehalogenate solvents, such as pooled dense non-aqueous phase liquids (DNAPLs), including trichloroethylene (TCE). The zero-valent metal emulsion contains zero-valent metal particles, a surfactant, oil and water. The preferred... | 05/02/2006 |
| 7029202 | Method for treating metal-contaminated water and soil A method for removing metal contaminants from water uses lignin derivatives, such as lignosulfonates and kraft lignin, a coagulant, such as a metal salt, and a pH-increasing composition. The lignin derivative is dispersed in the contaminated water, the coagulant is ... | 04/18/2006 |
| 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 |
