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7589248 |
Mercury contamination extraction
Mercury is removed from contaminated waste by firstly applying a sulfur reagent to the waste. Mercury in the waste is then permitted to migrate to the reagent and is stabilized in a mercury sulfide...
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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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7476273 |
Cementitious block material utilizing spent blasting abrasive particles
An accelerated-curing concrete masonry unit (CMU) mixture includes aggregate material, hydraulic cement and spent blasting abrasive particles, and may also include paint residue particles. The...
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7128780 |
Process for producing building materials from raw paint sludge
A process for producing building materials, such as asphalt, cement, concrete, mortar, or plaster board from liquid paint sludge containing water and paint solids produced from overspray in...
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6955638 |
Process for disposing of solvent-containing liquids
A process for disposing of solvent-containing liquids so that they do not contaminate ground water. An absorbent blend is mixed into a water-containing solvent mixture at the rate of about 1 lb. of...
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6936745 |
Selective polymer wrapping of radioactive materials
A selective polymer-wrapping process is disclosed which is capable of exclusively wrapping radioactive particles from solid waste streams at room temperature. Accordingly, separation of wrapped...
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6518477 |
Simplified integrated immobilization process for the remediation of radioactive waste
A method for remediating non-homogeneous radioactive waste to significantly reduce the waste mass/volume and to convert such waste to products that meet federal regulatory compliance standards is...
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6388163 |
Method for chemically inactivating energetic materials and forming a nondetonable product therefrom
A method for rendering nondetonble energetic materials, such as are contained in or removed from decommissioned ordnance. The energetic materials are either combined with epoxy hardener or are...
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6251058 |
Treatment of soil contaminated with hazardous residues
A method for removal of organic contaminants from solid particulate soil contaminated with the organic contaminants. The method comprises forming an aqueous slurry of a mixture of a hydrophobic...
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6203484 |
Methods for disinfecting wastes
The invention provided relates to the use of polyvinylpyrrolidone-iodine complexes in combination with gelling agents to produce strong disinfectants which not only physically stabilize...
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6153809 |
Polymer coating for immobilizing soluble ions in a phosphate ceramic product
A polymer coating is applied to the surface of a phosphate ceramic composite to effectively immobilize soluble salt anions encapsulated within the phosphate ceramic composite. The polymer coating...
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6087548 |
Method and assembly for sterilizing contaminated waste
The invention relates to a disposable assembly for collecting contaminated waste, comprising a heat-stable container (1), for example made of metal, in order to withstand, without deformation, the...
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6077212 |
Process for the confinement of solid materials
A process for the confinement of generally harmful solid materials is disclosed and claimed. The solid materials are immobilized and confined within a solid matrix for an unlimited storage free...
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6071043 |
System for securing landfills
The invention provides a method for securing waste landfills so as to prevent seepage of fluids into natural formations. A coating composition containing rubber crumb is sprayed onto polymeric...
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6010444 |
Infectious waste containment system
A method for containing potentially infectious devices. The potentially infectious devices are deposited in a container which contains a monomer, a reducing agent and water. An oxidizing agent is...
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5993372 |
Method and apparatus for collecting and containing hydrocarbon spills and leaks
A method and apparatus for collection and containment of hydrocarbons that may be spilled or leaked by equipment utilizing an internal combustion engine, transmission or fuel tank prevents...
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5972470 |
Absorption mat and method of making same
An absorption mat 1 receives organic hydrocarbons in liquid, paste-like or solid form, for example, oil, fats, fuels and solvents. The absorption mat includes a plate-like molded body 2 made of...
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5969209 |
Process and composition for soil remediation
Compositions and methods are provided for the decontamination of waste matter, in particular for soil remediation. The methods include making and applying a polymer composition to waste matter and...
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5968814 |
Portable system and method for controlling and absorbing spills of petroleum products
The present invention relates to a portable system for controlling and absorbing petroleum spills, such as occurs upon accidental damage to a diesel fuel tank of a truck. The system has a...
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5962630 |
Process and material that encapsulates solid hazardous waste
A method of encapsulating mixed waste in which a thermoplastic polymer having a melting temperature less than about 150° C. and sulfur and mixed waste are mixed at an elevated temperature not...
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5926772 |
Composition and process for the encapsulation and stabilization of radioactive, hazardous and mixed wastes
The present invention provides a composition and process for disposal of radioactive, hazardous and mixed wastes. The present invention preferably includes a process for multibarrier encapsulation...
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5916122 |
Solidification of aqueous waste
This invention involves the solidification of aqueous waste with neutralized cross-linked polyacrylates prior to landfill disposal and to further minimize leachate treatment from landfills through...
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5906572 |
Liquid hydrocarbon sorbing and solidifying pillow
A device for collection and containment of spilled or leaked liquid hydrocarbons absorbs pollutants that come in contact. The absorbed material is solidified-within the pillow into a rubber-like...
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5862494 |
Method for entrapping and minimizing moisture bearing low-level radioactive and mixed waste material
The present invention provides an encapment process for rapidly stabilizing and substantially reducing the volume of moisture bearing radioactive and mixed hazardous waste materials. The present...
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5851278 |
Method of nonhazardous removal of paint containing heavy metals and coating preparation for performing the same
The present invention involves a method of removing paint containing heavy metal from a surface without the production of hazardous wastes. Specifically, this method involves applying a coating...
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5844008 |
Process for treating municipal solid waste
A foamed solid product characterized in that said product is produced and prepared by a continuos process comprising mixing water permeated municipal solid waste (MSW) with a solidification...
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5769938 |
Waste-treating agent
To treat waste containing harmful netals such as lead, cadmium, mercury, chromium, copper, nickel, zinc, etc., the waste is mixed with a treating agent containing, as the essential constituent...
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5732363 |
Solidifying material for radioactive wastes, process for solidifying radioactive wastes and solidified product
There are provided a solidifying material used for radioactive waste which comprises a latent hydraulic material, an ultra-fine powder substance and a dispersing agent, and a process for the...
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5674175 |
Point-of-use infectious waste disposal system
A method for containing potentially infectious devices. The potentially infectious devices are deposited is a container to which is added an MDI-based urethane prepolymer-containing composition to...
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5663477 |
Hydrocarbon disposal method
A method for the disposal of a hydrocarbon. The hydrocarbon is intimately mixed with an aqueous solution. The aqueous solution includes a hydrophilic monomer, a cross-linking agent and an...
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5617920 |
Method for modifying gelation time of organically crosslinked, aqueous gels
Enhanced gel properties (e.g., faster gel time, higher attainable gel strengths) are achieved by reducing the pH and/or increasing the salt of a monovalent and/or divalent cation concentration of...
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5608137 |
Polymer gel barrier containing microorganisms for containment of hazardous waste
A method of containing and remediating contaminants within the soil includes the step of placing a gel barrier into the soil for containing the contaminants. The gel barrier and the soil contained...
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5595561 |
Low-temperature method for containing thermally degradable hazardous wastes
A low-temperature method for producing coated hazardous waste pellets which re used as the aggregate in a concrete wasteform is characterized by combining hazardous waste with a chemically setting...
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5584071 |
Disposal method and apparatus for highly toxic chemicals by chemical neutralization and encapsulation
An apparatus and method for disposing of highly toxic chemicals including the steps of chemical neutralization of the highly toxic chemical so as to substantially detoxify the chemical and...
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5576468 |
Methods for encapsulating waste and products thereof
A method for disposing of waste material employs an agglomerate formed by molding an admixture of waste material and thermosetting binder. The use of a thermoplastic resin sheet in conjunction with...
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5547504 |
Non-shrink grout composition with gas forming additive
A non-shrink grout including Portland cement, sand and an additive which is a polymer incorporating at least one of a calcium compound and aluminum metal so as to be reactive with the cement. The...
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5489333 |
Shrinkage compensating concrete with expansive additive
An expansive Portland cement incorporating an expansive additive which is a polymer incorporating a calcium compound reactive with the cement is described. The shrinkage compensating concrete...
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5481064 |
Waste fluid treatment process
A method is disclosed for solidification of waste fluids such as used antifreeze solutions, thereby facilitating disposal of said waste fluids. The method is applicable to aqueous waste fluids,...
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5468435 |
Contaminant solidifying and stabilizing apparatus and process
A process and apparatus for transforming contaminated material such as liquid wastewaters, into a solid and chemically stable composition which can be utilized as construction material, or which is...
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5434338 |
Process for conditioning waste materials and products therefrom
A process for conditioning waste materials containing at least one waste material plastic, includes the steps of mixing the waste material to form a homogenous plurality of particulate waste...
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5434334 |
Process for treating an aqueous waste solution
Processes and devices are disclosed for converting an aqueous waste solution, such as a radioactive waste stream, into a highly concentrated sludge having substantially little or no water. In turn,...
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5416251 |
Method and apparatus for the solidification of radioactive wastes and products produced thereby
Methods for the encapsulation and solidification of waste material, particularly radioactive ion exchange resin bead media, are provided along with the apparatus to accomplish the methods, and the...
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5414197 |
Method of containing and isolating toxic or hazardous wastes
A method of containing hazardous and toxic wastes includes the steps of irporating the dried waste, in a salt form, in melted polymer, such as asphalt, and forming the waste salt and asphalt blend...
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5376156 |
Method for binding particulate wastes such as dusts, fibers, paper and metal wastes or the like, into solids
The particulate waste is mixed with plastic waste in a screw extruder, pressed and extruded. The particulate waste and plastic waste are introduced into the feed hopper of a screw extruder. The...
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5322603 |
Method of an apparatus for treating infectious medical wastes
There is disclosed a method of treating medical wastes composed mainly of plastic materials, in which microwaves are applied to the medical wastes, and also circulating hot air is applied to the...
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5304707 |
Method for solidification and encapsulation using core-shell polymer particles
A method for solidification or encapsulation of compositions containing a substantially continuous aqueous phase comprising uniformly incorporating into said compositions core-shell polymer...
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5275509 |
Method of disposing of photographic fixer and developer
A method of disposing of photographic fixer and developer. The fixer and developer, preferably in equal quantities, are mixed and the mixture combined with an absorbing polymer which is...
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5242493 |
Asphaltic concrete product for the fixation of contaminated soils
A composition for the fixation of hydrocarbons from contaminated oily soil. The contaminated oily soil is a component in a cold mix asphaltic concrete. The soil is mixed with asphaltic roof...
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5211858 |
Lanthanide-crosslinked polymers for subterranean fluid containment
Polymers (and especially hydroxyethylcellulose) are crosslinked using a lanthanide as a crosslinking agent. The crosslinked polymers have utility in well completion, well stimulation, enhanced oil...
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4975224 |
Process for encapsulation of oily liquid waste materials
A novel technique for encapsulating and immobilizing low-level radioactive liquid wastes involves formation of an oil-in-water emulsion, encapsulation of the individual oil droplets by interfacial...
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