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7635236 |
In situ remediation of inorganic contaminants using stabilized zero-valent iron nanoparticles
A method for preparing highly stabilized and dispersible zero valent iron nanoparticles and using the nanoparticles as a remediation technology against inorganic chemical toxins in contaminated...
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7595002 |
Use of amino acid and carbohydrate polymers in soil retention, water conservation, and water clarification
Water-soluble amino acid copolymers, modified polysaccharides, acrylamide polymers, and combinations thereof are described for use in flocculation of solids, particularly flocculation of soil,...
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7595007 |
Amino acid and carbohydrate polymers for use in soil retention, water conservation, water clarification, and dust control
Water-soluble amino acid copolymers, modified polysaccharides, acrylamide polymers, and combinations thereof, are described, for uses including flocculation of solids, particularly flocculation of...
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7585132 |
Method for remediating a contaminated site
A method of amending an aquifer having at least one contaminant comprising the steps of: mixing a sorbent material with a carrier to form a slurry, the sorbent material having one dimension of at...
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7576254 |
Oxidation of organic compounds at high pH
Organic compounds are removed from contaminated soil, ground water and the like by treatment with a combination of a water soluble peroxygen compound, such as sodium persulfate, and a pH modifier...
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7553423 |
Method for treating aqueous sludge, material so produced and the use thereof
The invention relates to a method for the accelerated dehydration of sludges in sludge disposal areas, especially of sludges from rivers and harbors, by the exclusive use of anionic polymer...
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7553105 |
Method and compositions for treatment of subsurface contaminants
Compositions and methods are provided for oxidizing subsurface contaminants. Compositions include compatible combinations of surfactants, cosolvents and chemical oxidants. Compositions have been...
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7537706 |
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...
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7524141 |
Treatment of environmental contaminants
Contaminants, such as volatile organic compounds, are removed from an environmental medium, such as contaminated soil, rock, groundwater, waste water and the like, by treatment with a combination...
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7473372 |
Oxidation of organic compounds
An improved method for treating organic compounds present in soil, groundwater and other environments is disclosed. The method involves the use of a peroxygen compound and a chelated transition metal.
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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...
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7399141 |
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...
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7361283 |
Extraction and treatment of heavy metals
Contaminated waste streams or soil or sludge is subjected to a first treatment stage with an acid liquor at a pH below 2 and at a solids content from 5 to 30%; then the liquid and solid phases from...
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7347647 |
Composite material for a permeable reactive barrier
Compositions in accordance with the principles of the present invention comprise a compressed mixture of fibrous organic materials and multi-valent metals used to remove organic chemical...
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7334965 |
Method for treating a body of a polluted porous medium
A method for treating a body of a polluted porous medium, includes the steps of: preparing a reactive solution containing nanoparticles; injecting the reactive solution into the body of the...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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7220366 |
Process for purifying contaminated soil or groundwater with iron particles
Iron particles for purifying soil or ground water of the present invention comprise a mixed phase of α-Fe phase and Fe 3 O 4 phase, and having a BET specific surface area of 5 to 60 m 2 /g, an Fe...
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7204660 |
Humic mineral reagent and method for the production thereof, method for rehabilitating polluted soils, method for detoxification of wastes of extracted and processed mineral products and recultivating rock dumps and tailing storages, method for sewage water treatment and method for sludge utilisation
The humic-mineral agent from naturally occurring carbon-series humites and caustobioliths comprises humic acids and salts thereof, naturally hydrated humic acids, hydrolyzed humic acids, hydrated...
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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...
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7166759 |
Remediation method of media and iron powder for dehalogenation of hydrogenated hydrocarbons
The invention provides a remediation method of soil, water and/or gases by prompt dehalogenation of halogenated hydrocarbons by allowing the halogenated hydrocarbons contained at least in one of...
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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...
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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...
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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...
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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...
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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...
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7033492 |
Groundwater and subsurface remediation
A method of treating a site containing contaminants and apparatus are described The method and apparatus sparges the site with an air/ozone gas stream delivered with a hydroperoxide, which is a...
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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...
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7021862 |
Method for remediation of contaminated ground at oil or gas facility
The present invention is a mobile, in situ applicator system and method for remediating contaminated soils at a site without the removal of those soils. The applicator system comprises a vehicle,...
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7022241 |
Gas-gas-water treatment system for groundwater and soil remediation
A sparging system for in-situ groundwater remediation for removal of contamination including dissolved chlorinated hydrocarbons and dissolved hydrocarbon petroleum products including the use in...
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7005005 |
Soil bind and revegetation compositions and methods of making and using such compositions
Soil binding and revegetation compositions useful for stabilizing soil and promoting vegetation or revegetation of soil comprise water, an endosperm, an iron compound, a strong base, and a fibrous...
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7001105 |
Method of in situ blending of soil to reduce concentration of toxic residue in the soil
An in situ method of reducing concentrations of contaminates in contaminated soil, where contaminated soil positioned in a first horizontal location is in situ mixed with clean soil in vertical...
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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...
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6949197 |
Situ neutralization of subsurface acidic pore water
A method for neutralizing in situ pore water associated with a subsurface waste material body, the pore water having a pH of less than 2, the method includes the steps of adding a non-carbonate...
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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...
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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...
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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...
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6923596 |
Method for the remediation of contaminated soil and/or groundwater via integrated chemical and biological treatment
The invention provides repeated sequential stages of chemical and biological treatment to meet soil and/or groundwater treatment goals. Chemical treatment is undertaken to directly destroy a...
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6911570 |
Method for fixating sludges and soils contaminated with mercury and other heavy metals
The invention relates to a method, composition and apparatus for stabilizing mercury and other heavy metals present in a particulate material such that the metals will not leach from the...
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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...
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6860679 |
Adsorbent particles preparation method and treatment of soils polluted by hydrocarbons using said particles
The present invention relates to a method of preparing adsorbent particles formed from expanded plastics materials, said particles comprising cellular structures that are open at their surface,...
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6857998 |
Compositions and methods for treatment of solid waste
This invention relates to the treatment of contaminated materials including soils and solids to stabilize and reduce the mobility of heavy metal contaminated materials. Compositions and processes...
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6843618 |
In situ subsurface decontamination method
A method of decontaminating soil and ground water containing organic contaminants and divalent metal compounds. It comprises the steps of first treating such soils and ground water with an...
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6821440 |
Treatment of mineral materials
A process in which material comprising an aqueous liquid with dispersed particulate solids is pumped as a fluid then allowed to stand and rigidify and the rigidification is improved whilst...
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6805518 |
Method of in situ soil remediation for volatile organic contaminants
A preferred method of soil remediation in which contaminant organic compounds are removed from soil by a sequential process in which the bulk of natural and contaminant organic compounds are...
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