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| Number | Title | Issue Date |
| 8137029 | Methods and systems for remediating contaminated soil A system and method for remediation of contaminated soil are provided. The system comprises a soil remediation cell of contaminated soil and a plurality of multi-functional conduits located within the contaminated soil. Each multi-functional conduit defines a reacti... | 03/20/2012 |
| 7866920 | Methods and systems for remediating contaminated soil A system and method for remediation of contaminated soil are provided. The system comprises a soil remediation cell of contaminated soil and a plurality of multi-functional conduits located within the contaminated soil. Each multi-functional conduit defines a reacti... | 01/11/2011 |
| 7360966 | Methods and systems for remediating contaminated soil A system and method for remediation of contaminated soil are provided. The system comprises a soil remediation cell of contaminated soil and a plurality of multi-functional conduits located within the contaminated soil. Each multi-functional conduit defines a reacti... | 04/22/2008 |
| 7309189 | Fluid distribution and collection in landfills and contaminated sites A fluid injection and removal system to inject or remove fluids from a landfill or contaminated area. The system allows for treatment of waste in the landfill or the contaminated area. The fluid injection and removal system includes a permeable layer and at least on... | 12/18/2007 |
| 7255514 | Method and system for removing contaminants from soil A method and system for removing contaminants from contaminated soil at a site utilizes particle size segregation and particle density segregation to yield a plurality of fractions, whereby each of the fractions are tested and identified for the presence of unaccept... | 08/14/2007 |
| 7179381 | Emplacement of treatment agents using soil fracturing for remediation of subsurface environmental contamination A method for treating contamination in subsurface formations includes fracturing the soil to produce a network of fractures in the formation and simultaneously injecting a slurry containing an optional proppant and a solid-phase or nonaqueous-phase treatment agent i... | 02/20/2007 |
| 7004084 | Corn burner A corn-burning stove provides cooling for the corn in-feed auger and other adjacent components by combustion inlet air flow patterns. The inlet air flow transports pellet fuel through a distance within the fire pot which varies responsive to the flow rate of the inl... | 02/28/2006 |
| 7004678 | Soil remediation with heated soil Methods are provided for remediating contaminated soil. The methods may include collecting contaminated soil at a plurality of treatment sites. The contaminated soil at one or more of the plurality of treatment sites may be at least partially contained. The method m... | 02/28/2006 |
| 6951436 | Thermally enhanced soil decontamination method A method is provided to remove contaminants from contaminated soil. The method may include withdrawing vapors from a vapor extraction well, estimating the amount of water vapor removed from the contaminated soil in the vapors being withdrawn from the vapor extractio... | 10/04/2005 |
| 6945734 | In-situ thermochemical solidification of dense non-aqueous phase liquids A method for in-situ dense non-aqueous phase liquids treatment in which a subsurface source area comprising at least one rapid release contaminant is located and free water removed therefrom. The subsurface source area is then heated to a temperature suitable for ex... | 09/20/2005 |
| 6824328 | Vapor collection and treatment of off-gas from an in-situ thermal desorption soil remediation An in situ thermal desorption system may be used to remove contamination from soil. Off-gas removed from the soil may be transported from the soil to a treatment facility by high temperature hoses and plastic piping. The use of high temperature hose and plastic pipe... | 11/30/2004 |
| 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 |
| 6464430 | Soil decontamination apparatus and method A soil decontamination apparatus includes a pug mill with twin, side-by-side augers or shafts with paddles moving the soil along a treatment path. A roof over the pug mill includes burners directing flames toward the soil as it is moved through the device... | 10/15/2002 |
| 6276872 | Low temperature heat-assisted evaporation impoundment The assisting in the evaporation of water from a surface impoundment or other impoundment that utilizes a closed heat pipe system that is partially submerged within the material of the surface impoundment. Water, or other heat transfer fluid, is circulate... | 08/21/2001 |
| 6142706 | Thermal treatment wall A thermal treatment wall emplaced to perform in-situ destruction of contaminants in groundwater. Thermal destruction of specific contaminants occurs by hydrous pyrolysis/oxidation at temperatures achievable by existing thermal remediation techniques (elec... | 11/07/2000 |
| 6121040 | Process for remediation of contaminated soil Provided is a process for remedying a contaminated soil characterized in that a contaminated region of the ground is purified by the steps of first freezing the contaminated region, then injecting to the same a microorganism and a liquid agent or gas whic... | 09/19/2000 |
| 6102622 | Remediation method A method is provided to remove contaminants that are more dense than water from a contaminated volume of earth, the contaminants pooled above a layer of earth, the method comprising the steps of: providing an essentially horizontal wellbore along the inte... | 08/15/2000 |
| 6024513 | Aerobic landfill bioreactor The present invention includes a method of decomposing municipal solid waste (MSW) within a landfill by converting the landfill to aerobic degradation in the following manner: (1) injecting air via the landfill leachate collection system (2) injecting air... | 02/15/2000 |
| 5997214 | Remediation method A method is provided to remove volatile liquid contaminates from a contaminated volume of earth, the contaminated volume lying above a noncontaminated layer of earth, the method including the steps of: penetrating the contaminated volume with at least one... | 12/07/1999 |
| 5994670 | Electrical heating of soils using high efficiency electrode patterns and power phases Powerline-frequency electrical (joule) heating of soils using a high efficiency electrode configuration and power phase arrangement. The electrode configuration consists of several heating or current injection electrodes around the periphery of a volume o... | 11/30/1999 |
| 5988280 | Use of engine heat in treating a well bore A method of heating a chemical solution used in a well bore having a tubing string is disclosed. The well bore will intersect a hydrocarbon reservoir. The method will comprise providing a diesel engine that produces heat as a result of its operation. The ... | 11/23/1999 |
| 5988947 | Multi-section soil remediation device The present invention relates generally to a soil remediation device, and more particularly to a multi-section soil remediation device having at least one section for applying a variety of soil treatment regimes. The multi-section device can be independen... | 11/23/1999 |
| 5975799 | Electro-osmotic infusion for joule heating soil remediation techniques Electro-osmotic infusion of ground water or chemically tailored electrolyte is used to enhance, maintain, or recondition electrical conductivity for the joule heating remediation technique. Induced flows can be used to infuse electrolyte with enhanced ion... | 11/02/1999 |
| 5931600 | Thermal desorption and destruction of dense non-aqueous phase liquid in fractured bedrock An in-situ method for thermal desorption, extraction, and destruction of dense nonaqueous organic contaminants in fractured bedrock is accomplished through the use of thermal wells, a flameless oxidizer, and hot carbon adsorption chambers.... | 08/03/1999 |
| 5888022 | Method and system for treating bio-degradable waste material through aerobic degradation A system and method are provided for treating biodegradable waste material in a landfill by aerobic degradation. Waste material is deposited in the landfill and covered. The moisture content in the landfill is increased from about 40% to about 70% and a s... | 03/30/1999 |
| 5830752 | Apparatus for in-situ soil remediation An apparatus for in-situ remediation of contaminated soil or sludge having a trenching tool and an injection system for applying remediation agent to the contaminated material during in situ communication. The remediation agent is injected into the contam... | 11/03/1998 |
| 5765964 | Submerged combustion process and apparatus for removing volatile contaminants from groundwater or subsurface soil Combustion is used as a source of heat to remove polluting volatiles from contaminated groundwater and subsurface soil. The combustor is placed in a well, either in or out of an aquifer, to produce steam and combustion product gases and/or hot water which... | 06/16/1998 |
| 5730550 | Method for placement of a permeable remediation zone in situ A method for placement of remediation zones for treatment of contaminated groundwater in situ (10, 10A, 50, 60, 70, 80, 124) is described. The zones can be infiltrated or can be excavated and filled with a treatment composition to provide the remediation.... | 03/24/1998 |
| 5681130 | Active cooling-based surface confinement system for thermal soil treatment A thermal barrier is disclosed for surface confinement with active cooling to control subsurface pressures during thermal remediation of shallow (5-20 feet) underground contaminants. If steam injection is used for underground heating, the actively cooled ... | 10/28/1997 |
| 5667339 | Cryogenic method and system for remediating contaminataed earth An advancing freeze front is established in a porous region adjacent to or within contaminated earth. A flow of contaminated liquid phase water migrates toward the freeze front and a concentration of impurities is established in front of the advancing fre... | 09/16/1997 |
| 5660500 | Enhanced deep soil vapor extraction process and apparatus utilizing sheet metal pilings A system for in situ decontamination of contaminated soil in a contaminated zone comprising: a. a metal section placed in the contaminated soil, b. a heating means attached to said metal section for heating said metal section, and c. an extraction system adjac... | 08/26/1997 |
| 5639936 | Solar energy in-situ soil desorption apparatus and method including controlled air intake A method and apparatus for decontaminating in-situ soil by use of solar energy is provided. A targeted area of contaminated in-situ soil is covered with a substantially sunlight-transmitting, nonporous covering that allows solar energy to penetrate said c... | 06/17/1997 |
| 5601382 | Solar energy in-situ soil desorption apparatus A method and apparatus for, decontaminating in-situ soil by use of solar energy is provided. A targeted area of contaminated in-situ soil is covered with a substantially sunlight-transmitting, nonporous covering that allows solar energy to penetrate said ... | 02/11/1997 |
| 5558463 | Soil remediation apparatus and method An integrated soil warming probe assists soil remediation by heating contaminated soil. A thermal probe is driven into the contaminated soil and fluid injected into the soil proximate the thermal probe for enhancing remediation. Such a soil warming probe ... | 09/24/1996 |
| 5551799 | Cryogenic method and system for remediating contaminated earth An advancing freeze front is established in a porous region adjacent to or within contaminated earth. A flow of contaminated liquid phase water migrates toward the freeze front and a concentration of impurities is established in front of the advancing fre... | 09/03/1996 |
| 5547311 | Cathodic protection, leak detection, and thermal remediation system A system for cathodically protecting a structure that is in contact with soil and for extracting vapor or liquid from the soil, comprising a porous conducting material in direct contact with the soil, a power source being connected to the structure, a tub... | 08/20/1996 |
| 5545803 | Heating of solid earthen material, measuring moisture and resistivity The present invention includes a method of treating solid earthen material having volatile, semi-volatile, and non-volatile contaminants that utilizes electrical energy. A plurality of electrodes are inserted into a region of earthen material to be treate... | 08/13/1996 |
| 5545804 | Metal fixation in oily waste contaminated soil using microwave radiation acting on in-situ produced coupling agent Heavy metals contaminants in soils are fixed and rendered non-leachable by the process of heating the metal contaminated soil containing a hydrocarbon liquid, at an elevated temperature sufficient to convert at least a part of the liquid hydrocarbon into ... | 08/13/1996 |
| 5452763 | Method and apparatus for generating gas in a drilled borehole The present apparatus and method utilizes a downhole electrolysis process implemented by means of an elongated gas generating apparatus containing an array of cascaded electrolysis cells distributed along all or part of the borehole length to be fractured... | 09/26/1995 |
| 5449251 | Dynamic underground stripping: steam and electric heating for in situ decontamination of soils and groundwater A dynamic underground stripping process removes localized underground volatile organic compounds from heterogeneous soils and rock in a relatively short time. This method uses steam injection and electrical resistance heating to heat the contaminated unde... | 09/12/1995 |
