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| Number | Title | Issue Date |
| 8070959 | Chalcogenide compounds with a clay-like cation-exchange capacity and methods of use Chalcogenide compounds with cation exchange capability and methods of using the compounds are described. Compounds of the general formula A2xMxSn3-xS6 are described wherein x is 0.1-0.95, A is Li+, Na+ | 12/06/2011 |
| 8057682 | Green synthesis of nanometals using plant extracts and use thereof The present invention relates to methods of making and using and compositions of metal nanoparticles formed by green chemistry synthetic techniques. For example, the present invention relates to metal nanoparticles formed with solutions of plant extracts and use of ... | 11/15/2011 |
| 8043510 | Mercury removal with sorbents magnetically separable from treated fluids Methods and apparatus relate to treatment of fluids to remove mercury contaminants in the fluid. Contact of the fluid with active outer surfaces of particles magnetically separable from the fluid loads the particles with the mercury contaminants. Magnetic separation... | 10/25/2011 |
| 7910005 | Method for removing mercury and/or arsenic from contaminated water using an intimate mixture of organoclay and elemental sulfur The use of a sulfur-impregnated organoclay provides a mercury or arsenic removal media having increased reactivity, stability, and mercury removal ability. The Hg/As removal media described herein is prepared by impregnating an organophilic clay with elemental (free... | 03/22/2011 |
| 7906027 | Mercury removal process A process for removing mercury from an aqueous stream using a supported selenium and sulfur material is disclosed. ... | 03/15/2011 |
| 7820052 | Method of arsenic removal from water A method for low-cost arsenic removal from drinking water using chemically prepared bottom ash pre-treated with ferrous sulfate and then sodium hydroxide. Deposits on the surface of particles of bottom ash form of activated iron adsorbent with a high affinity for ar... | 10/26/2010 |
| 7807058 | Method and composition for sorbing toxic substances Toxic substances such as heavy metals are extracted from a medium using a sorbent composition. The sorbent composition is derived by sulfidation of red mud, which contains hydrated ferric oxides derived from the Bayer processing of bauxite ores. Exemplary sulfidizin... | 10/05/2010 |
| 7799229 | Process for the removal of catalytic metals and promoter metals from carbonylation process streams Process for the selective removal of Iridium carbonylation catalyst metal and/or at least one promoter selected from ruthenium, osmium and rhenium from a liquid composition comprising a carbonylation product, iridium carbonylation catalyst metal and/or the promoter ... | 09/21/2010 |
| 7794601 | Pyrolytic products from poultry manure Chars may be produced by carbonization or pyrolysis of poultry manure. Chars produced from poultry manure by the method described herein exhibit enhanced activity for metal ion adsorption. ... | 09/14/2010 |
| 7662291 | Canister for treatment of contaminated fluids An apparatus for use in the treatment of contaminated fluid is provided. The apparatus includes an outer element into which contaminated fluid flows and an inner element positioned in substantial axial alignment within the outer element and in spaced relations there... | 02/16/2010 |
| 7662292 | Radium selective media and method for manufacturing Media for selectively removing radium ions from water where manganese oxide (DMO) has been dispersed in a cation ion exchange resin (gel or macroporous) to adsorb radium ions. The media is manufactured by precipitating a soluble manganese (II) salt such as manganous... | 02/16/2010 |
| 7655148 | Water treatment compositions and methods of making and using A water treatment composition includes an oxidizing component and an adsorbing component, wherein one or both of the oxidizing component and adsorbing component comprise nanostructured materials. The water treatment compositions are useful in at least partially remo... | 02/02/2010 |
| 7588690 | Method of iodide removal The present invention provides a method of reducing the concentration of an iodide compound using an ion exchange resin. The ion exchange resin is a macroporous resin having sulfur functional groups exchanged with silver, a dry weight capacity of at least 5.0 eq/kg,... | 09/15/2009 |
| 7514004 | In-tank recirculating arsenic treatment system A low-cost, water treatment system and method for reducing arsenic contamination in small community water storage tanks. Arsenic is removed by using a submersible pump, sitting at the bottom of the tank, which continuously recirculates (at a low flow rate) arsenic-c... | 04/07/2009 |
| 7504036 | Method of making and using modified anion exchange materials with metal inside the materials The present invention relates, generally, to the art of impregnating metal complexes into anion exchange materials to provide improved anion exchange materials with a metal inside the materials such that the modified materials effectively and efficiently remove or r... | 03/17/2009 |
| 7479230 | Process for reduction of inorganic contaminants from waste streams The invention relates to the use of used alumina to reduce the level of inorganic contaminants, such as mercury and arsenic, from waste fluid streams. The invention further provides a process for reducing the level of mercury or arsenic in fluid streams by contactin... | 01/20/2009 |
| 7449118 | Process for reduction of inorganic contaminants from waste streams The invention relates to the use of used alumina to reduce the level of inorganic contaminants, such as mercury and arsenic, from waste fluid streams. The invention further provides a process for reducing the level of mercury or arsenic in fluid streams by contactin... | 11/11/2008 |
| 7442310 | Treating liquids with pH adjuster-based system The invention features a system for treating liquid including a liquid treatment device comprising adsorbent media for removing a substance from liquid and a pH adjuster device located upstream of the liquid treatment device relative to a direction of flow of the li... | 10/28/2008 |
| 7419601 | Nanomesh article and method of using the same for purifying fluids Disclosed herein are articles for removing contaminants from a fluid, such as a liquid or gas, the article comprising carbon nanotubes, which comprise at least one molecule or cluster attached thereto or located therein, wherein the carbon nanotubes are present in t... | 09/02/2008 |
| 7413663 | Water treatment apparatus and method A water treatment apparatus includes a housing comprising multiple housing portions and a plurality of treatment sections disposed within the housing, each treatment section comprising at least one distinct particulate layer. The apparatus is designed so that no wat... | 08/19/2008 |
| 7413607 | Templated semiconductor particles and methods of making Composite particles of a semiconductor particle such as a metal chalcogenide within a crosslinked, cored dendrimer are described. Additionally, methods of making the composite particles and compositions that contain the composite particles are described. ... | 08/19/2008 |
| 7407588 | Method of using stable adsorber granules to remove pollutants from flowable media The present invention relates to stable adsorber granules which have a high mechanical stability, and also to the use thereof. ... | 08/05/2008 |
| 7407587 | Method and sorbent for selective removal of contaminants from fluids Anion exchange materials loaded with oxygen-containing metal compounds within the exchange matrix as a sorbent, and a method for preparation. The materials remove arsenic and other ligands or contaminants from water and other fluid streams. ... | 08/05/2008 |
| 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 |
| 7404901 | Method for the removal of arsenic ions from water A method for the removal of arsenic ions from water with a porous silica composition with an organofunctional moiety comprising a thio which binds the arsenic ion and is then removed from the water. The method comprises the quality of the water. ... | 07/29/2008 |
| 7399416 | Reactive filtration In one embodiment, a reactive filtration method includes continuously regenerating a reactive filter media while simultaneously filtering contaminants from fluid flowing through the filter media. In one embodiment, regenerating the reactive filter media comprises mi... | 07/15/2008 |
| 7396470 | Treatment of environmental pollutants with mineral ores A method for removing a pollutant from emissions or the environment comprising: contacting a mineral ore or the use of a mineral ore selected from the group consisting of bauxite, modified bauxite and mixtures thereof. Typically, the pollutant is a heavy metal or a ... | 07/08/2008 |
| 7393454 | Elimination of metal ions from aqueous effluents Method for the elimination of metal ions from aqueous media, such as zinc, lead, chrome, copper, iron, aluminium, manganese, cadmium, cerium or silver and mixtures of the metals present in a trace or ultratrace state in aqueous effluents, by adsorption on a solid ch... | 07/01/2008 |
| 7390414 | Regeneration of chemically treated zeolite Systems and methods are provided for the removal and disposal of arsenic from an aqueous medium. The systems and methods include the removal of arsenic from a source by contact with either a chemically treated natural or synthetic zeolite, for example a ferric-loade... | 06/24/2008 |
| 7378372 | Filter and sorbent for removal of contaminants from a fluid Metal oxide modified or impregnated activated carbon as a sorbent to reduce multiple contaminants, such as arsenic and pesticide residues from a fluid. ... | 05/27/2008 |
| 7361281 | High efficiency ion exchange system and method for removing chromium from water The disclosed invention is a fixed bed ion exchange water purification system. It employs a combination of electronically controlled process steps and specific systems configurations to duplicate the effects of moving resin beds from one operating position to anothe... | 04/22/2008 |
| 7361279 | Removing metals from solution using metal binding compounds and sorbents therefor Removing metals from metal containing acidic solutions, such as contaminated waters and industrial wastewaters, is described. An amphipathic, heterocyclic, metal-coordinating compound (an extraordinaiy ligand) and a sorbent are added to a solution, such that the add... | 04/22/2008 |
| 7354733 | Method for sorting and separating living cells We disclose methods of sorting or separating mixtures of living cells (e.g., eukaryotic, prokaryotic, mammalian, pathogenic, bacterial, viral, etc.). We perform our methods by activating cell-selective photophoric labels, which photosensitize and chemically reduce a... | 04/08/2008 |
| 7341661 | Clarification and sorptive-filtration system for the capture of constituents and particulate matter in liquids and gases A sorptive-filtration system for removing at least one of negatively or positively charged ions, complexes or particulates from an aqueous stream. The system includes a) flow formed substantially from at least one of rainfall-runoff or snowmelt-runoff; b) a filter c... | 03/11/2008 |
| 7341667 | Process for reduction of inorganic contaminants from waste streams The invention relates to the use of used alumina to reduce the level of inorganic contaminants, such as mercury and arsenic, from waste fluid streams. The invention further provides a process for reducing the level of mercury or arsenic in fluid streams by contactin... | 03/11/2008 |
| 7341665 | Process for the treatment of contaminated water based on the use of apolar zeolites having different characteristics A process is described for the treatment of water contaminated by apolar organic compounds and/or by heavy metals, which consists in circulating the water through a system comprising at least two types of zeolites having a silica/alumina ratio >50, placed in success... | 03/11/2008 |
| 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 |
| 7332089 | Method of extracting metal ions from an aqueous solution utilizing an antimony silicate sorbent The invention provides a use of a material comprising antimony silicate as a sorbent in the removal of metal ions, e.g. radioactive metal ions, from an acidic liquid medium. The metal ions may be selectively removed from amongst other ions such as Na, K, Mg, and Ca ... | 02/19/2008 |
| 7332090 | Process for the removal of mercury from solutions contaminated with mercury Mercury is removed from solutions contaminated with mercury by filtration through a carbon filter consisting of electrode graphite. ... | 02/19/2008 |
| 7323109 | Composition comprising metal-ion sequestrant This invention relates to a composition of matter comprising a functionalized mordant polymer comprising a cationic polymer having an adsorbed metal-ion sequestrant, wherein the metal-ion sequestrant has a stability constant greater than 1010 with iron (I... | 01/29/2008 |
