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| Number | Title | Issue Date |
| 8147701 | Immobilized redox mediators for the treatment of contaminated waters and gas emissions The present invention relates to a treatment process applicable to degrade or transform organic and inorganic pollutants, commonly found in industrial wastewaters, contaminated aquifers and gas emissions, in which reduction or oxidation reactions (e.g. redox reactio... | 04/03/2012 |
| 8092686 | Modified amine-aldehyde resins and uses thereof in separation processes Modified resins are disclosed for removing a wide variety of solids and/or ionic species from the liquids in which they are suspended and/or dissolved. These modified resins are especially useful as froth flotation depressants in the beneficiation of many types of m... | 01/10/2012 |
| 7981296 | Methods of using geotextile composite for filtration of contaminated liquids and sediments Geotextile composite configured to filter liquids and related methods are provided. The geotextile composites include a pre-filter layer, a post-filter layer and at least two intermediate filter layers disposed between the pre-filter layer and the post-filter layer.... | 07/19/2011 |
| 7938968 | Fluid storage and purification method A method of storing and dispensing a fluid includes providing a vessel configured for selective dispensing of the fluid therefrom. The vessel contains an ionic liquid therein. The fluid is contacted with the ionic liquid for take-up of the fluid by the ionic liquid.... | 05/10/2011 |
| 7914682 | Method for removing impurities from a urea solution A method of removing impurities from a urea solution comprising contacting the aqueous solution with an ion exchange resin and adsorbing the impurities from the urea solution, and the system therefore. ... | 03/29/2011 |
| 7901582 | Phosphorus recovery method and phosphorus recovery system A phosphorus recovery method and a phosphorus recovery system which can make equipment size small, and can be added easily also to an existing wastewater treatment facility, and can recover phosphorus by low cost, are provided. A phosphorus compound adsorption mater... | 03/08/2011 |
| 7883625 | Removal of oils from solid surfaces and water with a substance having a high humate level The present invention relates to a method for removing oil from water or a solid surface. This involves contacting the water or the solid surface with a substance in the form of a sheet and having a high humate level under conditions effective for the substance to a... | 02/08/2011 |
| 7879244 | Method for anion-exchange adsorption and thioether anion-exchangers A method for the removal of a substance, which has a negative charge and which is present in an aqueous liquid (I). The method comprises the steps of: (i) contacting the liquid with an anion-exchanger (1) that comprises mixed mode anion-exchanging ligands in which t... | 02/01/2011 |
| 7815806 | Purification of fluids with carbon nanotubes having attached functional group Disclosed herein is a nanostructured material comprising defective carbon nanotubes chosen from impregnated, functionalized, doped, charged, coated, and irradiated nanotubes, and combinations thereof. The defective carbon nanotubes contain a defect which is a lattic... | 10/19/2010 |
| 7771600 | Methods of utilizing waste waters produced by water purification processing The invention relates to treating unwanted moderately saline water for producing useful water. The treated water is also suitable for human and livestock consumption. The process includes passing moderately saline waters having 0.05% or more weight and less than 1.0... | 08/10/2010 |
| 7763174 | Process for removing contaminants using reverse flow reactor with integrated separation The present invention pertains to a reverse-flow reactor comprising at least one catalyst bed which is preceded and followed by at least one bed containing selectively adsorbing material, and its application for in a process for the removal of contaminants from a pr... | 07/27/2010 |
| 7754084 | Heat-stable anion exchangers The present invention relates to heat-stable anion exchangers based on at least one aromatic monomer and at least one crosslinker having structural elements of the general formula (I) where Ak, Ak′, Ak″ are... | 07/13/2010 |
| 7744763 | Mercury removal sorbent A composition comprising a vanadium oxide compound and an alkali metal promoter loaded onto a porous support material is disclosed. Methods of making and using the composition to remove heavy metals or heavy metal containing compounds from a fluid stream are also pr... | 06/29/2010 |
| 7666306 | Adsorbent, method for producing same, and method for processing oil-containing waste water The present invention provides an adsorbent comprising calcined coke with a BET surface area of 20 m2/g or less which is obtained by calcining a particular carbonaceous material at 1000 to 1500° C. and which is preferably obtained by calcining coal coke,... | 02/23/2010 |
| 7588689 | Catch basin filter absorber method for water decontamination A storm water treatment device that is installed under the grate of new or existing catch basins, and more commonly referred to as an insert. The catch basin decontamination apparatus has a universal housing and support ring that allows one design to fit most applic... | 09/15/2009 |
| 7575688 | Apparatus and method for removing sulfur containing compounds from a post-refinery fuel stream Disclosed are fuel filters and process for removing sulfur-containing compounds from a post refinery fuel stream. In one embodiment, the disclosed process requires passing the post refinery fuel stream through a fuel filter to provide a clean fuel stream having a re... | 08/18/2009 |
| 7572379 | Removal of metal ions from onium hydroxides and onium salt solutions The present invention relates to a process for removing dissolved metal ions from an onium hydroxide and/or salt solution, including providing a weak acid ion exchange medium; providing a solution comprising magnesium ions; forming a magnesium-loaded ion exchange me... | 08/11/2009 |
| 7514002 | Method for removing phosphorus and method for reutilizing recovered phosphorus A method for removing phosphorus is provided in which eutrophic water as a treatment target is supplied to fly ash thereby removing phosphorus contained in the eutrophic water. The fly ash includes about 3% or more calcium oxide as a component. Alternatively, the fl... | 04/07/2009 |
| 7491335 | Removal of arsenic from water with oxidized metal coated pumice The current invention is concerned with methods and compositions for the removal of arsenic contamination from water. A method for binding As to oxidized metal coated pumice and method for making the same are disclosed. Water filters comprising oxidized metal coated... | 02/17/2009 |
| 7485233 | Hydrophilic mixed matrix material having reversible water absorbing properties Polymer-ceramic mixed matrix compositions contain one or more organic polymers and a nano-sized dispersion of inorganic metal oxide particles which are dispersed throughout the composition. Materials have use in making membranes that act as transfer agents. ... | 02/03/2009 |
| 7431842 | Method of using silicon carbide for removal of adventitious agents A method of using silicon carbide for removing adventitious materials such as endotoxins, prions, viruses and bacteria from water, buffers, aqueous solutions or biological preparations of DNA or proteins, or any combination thereof. The present invention provides fo... | 10/07/2008 |
| 7431843 | Process for the purification of silicone based solvents An apparatus and process for removing impurities from silicone based solvents is presented. The apparatus and process use an adsorbent for removing contaminants from the solvent, and when the adsorbent is sufficiently loaded with contaminants, the adsorbent is regen... | 10/07/2008 |
| 7419600 | Method for purifying a branched water-soluble polymer Multi-armed, monofunctional, and hydrolytically stable polymers are described having the structure wherein Z is a moiety that can be activated for attachment to biologically active molecules such as proteins and wherein P a... | 09/02/2008 |
| 7410585 | Apparatus and method for storing and releasing sulfur containing aromatic compounds from a fuel stream of an internal combustion engine Disclosed is a fuel filter for removing sulfur containing compounds from an internal combustion fuel stream. In one embodiment, the fuel filter comprises at least one column comprising an adsorbent. In one exemplary embodiment the adsorbent is capable of removing su... | 08/12/2008 |
| 7404939 | Mercury removal sorbent A sorbent composition comprising a vanadium compound and a TiO2 support material is disclosed. Methods of making and using the composition to remove heavy metals or heavy metal containing compounds from a fluid stream are also provided. Such methods are p... | 07/29/2008 |
| 7404900 | Ammonium removal system including an electrophysical separation system An ammonium removal system includes an ion-exchange medium, a brine source, and an electrophysical separation system. The ion-exchange medium may be used to remove ammonium from a waste stream. A brine may be flushed through the ion-exchange medium to remove the amm... | 07/29/2008 |
| 7393969 | Particular calixarenes method for production and use thereof The present invention relates to calix[4]arenes which effectively bind alkali metal ions (Na+, K+) and transport them over phase boundaries, their preparation and use. ... | 07/01/2008 |
| 7390343 | Drinking water filtration device The invention is a device for purifying drinking water that has at least one fibrous structure. Preferably, there is an upstream and downstream fibrous structure. Each fibrous structure is a mixture of nano alumina fibers and second fibers arranged in a matrix to cr... | 06/24/2008 |
| 7385040 | Antibody purification The present invention relates to a method of separating antibodies from contaminants in a solution, which method comprises contacting the solution with a chromatography resin comprised of a support to which multi-modal ligands have been immobilised, wherein a multi-... | 06/10/2008 |
| 7383946 | Materials for storing and releasing reactive gases Compositions, methods, and devices are provided for use in containing and releasing a gas, particularly a reactive gas. The composition can include a reactive gas, reactive gas precursor, or combination thereof; a fluid in which the reactive gas, reactive gas precur... | 06/10/2008 |
| 7381333 | Treatment of water flowing in a horizontal conduit Trace levels of dissolved toxic species are removed from water flowing horizontally in a conduit equipped with overhead debris-excluding structure by suspending from the overhead structure elongated absorbent structures in the form of porous bags which confine parti... | 06/03/2008 |
| 7368058 | Method of generating fresh water and fresh-water generator The present invention is a water processing method comprising the steps of separating boron-containing water in a reverse osmosis membrane module to provide a permeated water and subjecting a part of the obtained permeated water to boron removal using an adsorbent, ... | 05/06/2008 |
| 7364646 | High-purity eluant generator An apparatus and method for electrochemically modifying the retention of a species on a chromatography material is disclosed. The apparatus comprises a housing having an effluent flow channel adapted to permit fluid flow therethrough. The effluent flow channel compr... | 04/29/2008 |
| 7365142 | Polyelectrolyte complex films for analytical and membrane separation of chiral compounds The present invention is directed to enantioselective polyelectrolyte complex films. Further, said films may be free or isolated membranes, or coatings on substrates such a porous substrates, capillary tubes, chromatographic packing material, and monolithic stationa... | 04/29/2008 |
| 7361275 | Use of derivatized nanoparticles to minimize growth of micro-organisms in hot filled drinks A method and article for removing a selected metal-ion from a solution. The method included providing a container for holding a liquid, the container having an internal surface having a metal-ion sequestering agent provided on at least a portion of the internal surf... | 04/22/2008 |
| 7357979 | Composition of matter comprising polymer and derivatized nanoparticles This invention is related to a composition of matter useful for sequestering target metal-ions from an environment, said composition comprising a polymer and derivatized nanoparticles comprising inorganic nanoparticles having an attached metal-ion sequestraint, wher... | 04/15/2008 |
| 7357863 | Container for inhibiting microbial growth in liquid nutrients A fluid container and method for inhibiting the growth of microbes in liquid nutrient in a container, the container having an interior surface having a metal-ion sequestering agent and antimicrobial agent for inhibiting growth of microbes in the liquid nutrient.... | 04/15/2008 |
| 7351779 | Polymerization process and reactor system A process for polymerizing one or more monomers is provided. In at least one specific embodiment, the process includes preparing a mixture comprising the one or more monomers, a catalyst system and a fluorinated hydrocarbon, preferably a hydrofluorocarbon. A fluorin... | 04/01/2008 |
| 7347981 | Directed flow method and system for bulk separation of single-walled tubular fullerenes based on helicity A method for bulk separation of single-walled tubular fullerenes (100) based on helicity is provided wherein a solution or suspension of the single-walled tubular fullerenes (100) is flowed onto a crystalline or highly oriented substrate (30). T... | 03/25/2008 |
| 7338603 | Process using rare earths to remove oxyanions from aqueous streams Oxyanions of various contaminant elements, such as chromium, antimony, molybdenum, tungsten, vanadium and uranium, are removed from water and other aqueous feeds by treating the feed with (1) a sorbent comprising one or more rare earth compounds, usually mixed or su... | 03/04/2008 |
