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| Number | Title | Issue Date |
| 7581902 | In situ immobilization of metals in contaminated sites using stabilized iron phosphate nanoparticles A method for preparing a class of highly stabilized and soil-dispersible nanoparticles and using the nanoparticles as a remediation technology for immobilizing toxic metals at toxic metal contaminated sites. The method employs a composition containing select polysac... | 09/01/2009 |
| 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 |
| 7374691 | In-situ hydraulic treatment conduit A system is installed in the subsurface to control the hydraulic gradient between the area within a containment system and the area outside the containment system, and provides an easy-to-maintain treatment system. Preferably, the treatment system includes a suffici... | 05/20/2008 |
| 7344337 | Geomorphology environmental remediation process and systems According to the methods, a site is investigated for possible selective removal of sediment containing a contaminant. An adjusted contaminant concentration is calculated for sediment zones on the site. The site preferably contains a water course. A determination may... | 03/18/2008 |
| 7326002 | Sparge broadcasting in fracture rock Apparatus and method for removal of contaminants from a formation are described. The apparatus and method introduces at a first location treatment materials at concentrations to effect removal of contaminants into a formation and withdraws fluid from a second locati... | 02/05/2008 |
| 7300227 | Recovery of non-aqueous phase liquids from ground sources The invention disclosed relates to a method and apparatus for recovering non-aqueous phase liquids (NAPL) from regions below ground where NAPL spills are sources of aquifer contamination. The apparatus includes a system to supply gas-supersaturated liquid, a system ... | 11/27/2007 |
| 7300039 | Environmental remediation method and apparatus This invention relates to remediation systems, and more particularly to remediation systems for water, soil, and sediment bodies using thin-layer coated microbubbles. ... | 11/27/2007 |
| 7287932 | Ballasting system for on-site sewage treatment and disposal system A ballasting system for an on-site sewage treatment and disposal system for areas having a ground water level above a minimum depth below grade. A perimeter barrier is arranged around a selected subterraneal volume within a ground area. The perimeter barrier has a c... | 10/30/2007 |
| 7273552 | Bioremediation Bioremediatory fungi, such as Trichoderma harzianum, which have been found to catabolise cyanide, are capable of detoxifying contaminated environmental areas in association with a suitable rhizosphere. ... | 09/25/2007 |
| 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 |
| 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 |
| 7192221 | System for preventing seismic liquefaction of ground in urbanized area A system for preventing seismic liquefaction of the ground in an urban area built on reclaimed land consisting of a loose fine grained layer vulnerable to liquefaction underlain with a soft cohesive layer liable to uneven settlement. The system includes a plurality ... | 03/20/2007 |
| 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 |
| 7166224 | Water purification apparatus The present invention relates to the use of a hydrophilic membrane to provide by the process of pervaporation through the membrane water suitable for agricultural irrigation, industrial use, hydrating or rehydrating of food or agricultural or pharmaceutical composit... | 01/23/2007 |
| 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 |
| 7160060 | System and method of remediation of contaminants The present invention discloses a remediation system and method of use thereof for degrading contaminants, including chlorinated organics, volatile organic chemicals, and polycyclic aromatic hydrocarbons. The system includes an oxygen source and pentane. The system ... | 01/09/2007 |
| 7153541 | Method for inhibiting oxidation of metal sulfide-containing material The present invention provides means for inhibiting the oxidation of a metal sulfide-containing material, such as ore mine waste rock or metal sulfide taiulings, by coating the metal sulfide-containing material with an oxidation-inhibiting two-tail lipid coating ( | 12/26/2006 |
| 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 |
| 7150583 | Electro kinetic geosynthetic structure An EKG structure comprising geosynthetic material associated with at least one conducting element wherein the structure comprises at least one core element substantially enclosed by at least one sheath, one or both comprising the geosynthetic material; the use there... | 12/19/2006 |
| 7140805 | Method of treating municipal solid waste One aspect of the present invention relates to a method of treating municipal solid waste which includes landfilling a volume of solid waste, a substantial portion of which has been exposed to the atmosphere, adding moisture to the solid waste, compacting the moiste... | 11/28/2006 |
| 7131638 | Deep well sparging Method and apparatus for treating contaminants on a site, especially a deep well site includes delivering a first stream of a first gas to a first port of a laminar microporous diffuser and delivering a second stream of a second gas to a second port of the laminar m... | 11/07/2006 |
| 7077208 | Method and system for directing fluid flow An apparatus having various conduits moves liquid by passing gas up through it. A collector conduit transports the liquid to the bottom of the unit. A gas-lift conduit mixes the liquid and gas at the bottom and transports the mixture upwards, owing to the rising act... | 07/18/2006 |
| 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 |
| 7033108 | Turf playing surface aeration and drainage system A perforated pipe network beneath a playing surface. A blower connected to the pipe network drawing an air flow through the pipe network to create a vacuum. A drain pipe connecting to the pipe network. An air/water separator connected upstream of the blower for sepa... | 04/25/2006 |
| 7029588 | Oxidizing solution and process for contaminants My invention provides an oxidizing solution and process for the in situ oxidation of contaminants, including hydrocarbon, organic, bacterial, phosphonic acid, and other contaminants, the contaminants being found in various surfaces and media, including soil, sludge,... | 04/18/2006 |
| 7011475 | Method for preventing seismic liquefaction of ground in urbanized area and facilities used in this method A method of preventing seismic liquefaction of the ground in an urban area built on reclaimed land consisting of a loose fine grained layer vulnerable to liquefaction underlain with a soft cohesive layer liable to uneven settlement comprising pumping out pore water ... | 03/14/2006 |
| 6979150 | In-situ containment and extraction of volatile soil contaminants The invention relates to a novel approach to containing and removing toxic waste from a subsurface environment. More specifically the present invention relates to a system for containing and removing volatile toxic chemicals from a subsurface environment using diffe... | 12/27/2005 |
| 6962466 | Soil remediation of mercury contamination An in situ soil remediation system may be used to remove or reduce levels of mercury contamination within soil. The soil remediation system may also remove or reduce levels of other contaminants within the soil. Mercury may be vaporized within the soil by a heating ... | 11/08/2005 |
| 6962467 | Method of removal of hydrocarbons from soils using solids loaded polymer foam A method of removal of hydrocarbons from soils using solids-loaded polymer foam. A first step involves providing a solids-loaded polymer foam consisting of an open-celled polymer foam matrix with zeolite dispersed and bound throughout the foam matrix. A second step ... | 11/08/2005 |
| 6957930 | Apparatus to form columns of granular material Apparatus to install small diameter columns of granular material in soil which includes rotating hollow shaft mandrel with external projections to aid mandrel advance into the soil and define the size of the cavity formed in the soil, the cavity being filled with gr... | 10/25/2005 |
| 6955501 | In-situ process for detoxifying hexavalent chromium in soil and groundwater Inexpensive, highly effective methods for the in-situ reduction of hexavalent chromium to the non-toxic trivalent oxidation state in soil and groundwater containing hexavalent chromium are provided, which may reduce hexavalent chromium concentration in soil to as lo... | 10/18/2005 |
| 6948881 | Remediation injection vessel for marshes, tidal flats, and wetlands An injection vessel for injecting liquid amendment into contaminated subsurface sediment in ecologically sensitive areas such as shallow water salt marshes, tidal flats, or fresh water wetlands is disclosed. The injection vessel described herein includes a shallow-d... | 09/27/2005 |
| 6939085 | Soil aerating machine A soil aerating machine includes in combination a skid-steer and a basket resembling a loader bucket adapted for attachment to the skid-steer boom. An air pressure tank, an elongate air nozzle pipe, an air hammer, and air control valves for the air nozzle pipe and a... | 09/06/2005 |
| 6926465 | Remediation system A remediation system comprises a primary scalping screen, a primary pump and sump, a large diameter maximum density separator with flocculant injection ring, a secondary pump and sump, a small diameter maximum density separator with flocculant injection ring, a stat... | 08/09/2005 |
| 6923914 | Remediation of metal contaminants with hydrocarbon-utilizing bacteria Methods and apparatus are disclosed for remediating metal contaminants using hydrocarbons which stimulate the growth of hydrocarbon-utilizing bacteria. The metal contaminants may include heavy metals such as arsenic, antimony, beryllium, cadmium, chromium, copper, l... | 08/02/2005 |
| 6913251 | Deep well sparging Method and apparatus for treating contaminants on a site, especially a deep well site includes delivering a first stream of a first gas to a first port of a laminar microporous diffuser and delivering a second stream of a second gas to a second port of the laminar m... | 07/05/2005 |
| 6905288 | Method of remedying contaminated soil by microorganism The present invention is a method of remedying contaminated soil comprises: providing microorganisms capable of degrading soil contaminants to contaminated soil, in which the microorganisms is supported on a carrier; and providing nutrients for the microorganisms to... | 06/14/2005 |
| 6872318 | Microporous diffusion apparatus Apparatus for active in situ multi-element gas sparging for bioremediation or physico-chemical degration for removal of contaminants in a soil formation containing a subsurface groundwater aquifer or a substantially wet unsaturated zone, the multi-gas contained in b... | 03/29/2005 |
| 6808632 | 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. ... | 10/26/2004 |
| 6787038 | Extraction of pollutants from underground water Pollutants are extracted from sub-surface water using an aqueous solution of cyclodextrin and a vertical circulating well. Complexes of the pollutant and cyclodextrin are recovered from the bottom of the well. When the pollutant is volatile, the complexes are separa... | 09/07/2004 |
