| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 210683000 | Anions | 57 |
| 20080290036 | Method of synthesizing zirconium-loaded fibrous adsorbent materials having phosphoryl groups and removal of objectionable substances using the adsorbents - A zirconium-loaded fibrous adsorbent material having phosphoryl groups which is produced by first grafting a reactive monomer having phosphoryl groups onto a polymeric substrate and then loading zirconium. One or more methods of using the zirconium-loaded fibrous adsorbent material to recover arsenic, phosphoric ions, and/or fluoride ions are disclosed. | 11-27-2008 |
| 20090218290 | MACROMOLECULAR KETOALDEHYDES - Methods of producing macromolecular compositions and using same are provided. The method includes preparing a resin material; forming an acetyl group on the resin material; and oxidizing the acetyl group via a one-step reaction including reacting a sulfoxide and an acid with the acetyl group to form a ketoaldehyde group. The macromolecular compositions are capable of removing an effective amount of one or more constituents from a physiological solution, such as urea during dialysis therapy. | 09-03-2009 |
| 20090272693 | Utilization of polysaccharides to eliminate anions of heavy metals from water - Water contaminated with anions of heavy metals, e.g., arsenic values, is purified by contacting same with a composition containing at least one polysaccharide, such as starches or vegetable gums. | 11-05-2009 |
| 20090294366 | REMOVAL OF CARBON DIOXIDE FROM AIR - The present invention is directed to methods for removing CO | 12-03-2009 |
| 20100116748 | METHOD OF MAKING MACROPOROUS ANION EXCHANGE RESINS - Methods of making macroporous anion exchange resins are described. The macroporous anion exchange resins are in the form of particles such as beads that contain a hydrophilic, crosslinked, (meth)acrylic-type polymeric material. Additionally, methods of purifying a negatively charged material using the macroporous anion exchange resins, methods of making chromatographic columns that contain the macroporous anion exchange resins, methods of making filter elements that contain the macroporous anion exchange resins, and methods of making porous composite materials that contain the macroporous anion exchange resins are described. | 05-13-2010 |
| 20100181257 | Extraction Of Anions From Solutions And Mixtures Using Hyperbranched Macromolecules - Hyperbranched macromolecules and methods are described for selectively filtering contaminants such as anions from water and non-aqueous solutions, particularly in the presence of competing contaminants including other anions. The hyperbranched macromolecules may contain alkyl, 2-hydroxyalkyl, 2-methyl-2-hydroxylalkyl, 2-hydroxy-2-phenylalkyl, and other groups, which may be hydrophilic or hydrophobic. The molecules may preferentially bind to the contaminant at interest at low pH, and release the contaminant at a pH of about 9. The molecules may be used to filter contaminants including perchlorate and nitrate even in the presence of high sulfate concentrations. | 07-22-2010 |
| 20100181258 | THE FERRIC AND MANGANESE BINARY OXIDE BASED ADSORBENT, AND THE METHODS FOR THE PREPARATION AND APPLICAITON OF THE ADSORBENT - The present invention relates to a ferric and manganese binary oxide (FMBO) based adsorbent, its preparation and application method. The FMBO based adsorbent comprises a ferric and manganese binary oxide (FMBO) and a carrier. The mass ratio of FMBO to the carrier is between 0.2:100 and 15:100. The FMBO based adsorbent effectively removes the arsenic in groundwater, particularly the arsenite. The present invention also provides the equipment for preparation and application of the adsorbent. | 07-22-2010 |
| 20100230360 | Anion adsorbent, water or soil cleanup agent and process for producing the same - A novel anion adsorbent with extremely high anion adsorptive power, composed mainly of iron as a metal excellent in biosafety, is provided. The anion adsorbent contains, as an active ingredient, amorphous ferric hydroxide produced under such conditions that a ferrous species is present. | 09-16-2010 |
| 20100243573 | ION EXCHANGE RESINS COMPRISING INTERPENETRATING POLYMER NETWORKS AND THEIR USE IN PERCHLORATE REMOVAL - The invention includes ion exchange resins, methods of making ion exchange resins and their use in the removal of perchlorate from water. In one embodiment, the invention comprises a method for removing perchlorate from a water source by contacting the water with an ion exchange resin, wherein the ion exchange resin comprises particles of a crosslinked copolymer comprising: an interpenetrating polymer network (IPN) of at least two polymer components each having a styrenic content greater than 50 molar percent, and a quaternary ammonium functionality. | 09-30-2010 |
| 20100294723 | DETECTION OF NEGATIVELY CHARGED POLYMERS USING WATER-SOLUBLE, CATIONIC, POLYTHIOPHENE DERIVATIVES - Novel methods allowing for the simple optical and electrochemical detection of double-stranded oligonucleotides are disclosed. The methods are rapid, selective and versatile. Advantageously, they do not require any chemical reaction on the probes or on the analytes since they are based on different electrostatic interactions between cationic poly(3-alkoxy-4-methylthiophene) derivatives and single-stranded or double-stranded (hybridized) oligonucleotides. | 11-25-2010 |
| 20110036778 | FILTER NETWORK - The present invention relates to a filter unit for cleaning fluids, filter systems comprised of a plurality of said filter units, and the use of the filter unit or of the filter systems for filtering sludge and floating algae from water, or for purifying gases. | 02-17-2011 |
| 20110056887 | REMOVAL OF OXO ANIONS FROM WATER - The present invention relates to a process for removing oxo anions from water and aqueous solutions having a high proportion of silicate by means of a filter arrangement comprising at least one anion exchanger and at least one oxo anion-specific adsorber, and to a filter arrangement to be used for this purpose. | 03-10-2011 |
| 20110089114 | PROCESS FOR ABSORBING AND ADSORBING OIL DEGRADATION PRODUCTS FROM LUBRICATING OILS - Disclosed in certain embodiments is a method of removing a compound from a lubricating fluid comprising contacting the lubricating fluid with a solid medium having acrylamide functionality to absorb or adsorb the compound. | 04-21-2011 |
| 20110089115 | METHODS FOR PREVENTION AND REDUCTION OF SCALE FORMATION - Disclosed herein are methods of preventing or reducing scale formation or corrosion by combining at least one scale-forming fluid comprising at least one scaling compound with at least one anti-scale material chosen from at least one scale-adsorbent agent. The methods may reduce or prevent the formation of scale on surfaces of liquid-related process equipment, such as boilers and heat exchangers. | 04-21-2011 |
| 20110108488 | BORON-SELECTIVE RESINS - The present invention relates to boron-selective resins containing glucamide structures, a method for production thereof and also use thereof for removing boron from liquids, preferably from seawater, drinking water or process waters in or from the electronics industry. | 05-12-2011 |
| 20110155670 | METHOD FOR REMOVING HYDROFLUORIC ACID AND ORGANIC FLUORIDES FROM A FLUID STREAM - A method is provided for removing HF and organic fluorides from fluid streams in which the fluoride species exist as impurities and, in particular, from hydrocarbon fluid streams containing no more than about 1.0% by weight total fluorides. The method consists of first contacting the fluid stream with a nonpromoted alumina and then with an adsorbent consisting essentially of activated alumina that has been treated with a promoter material selected from the oxides and phosphates of alkali metals and alkaline earth metals, and mixtures thereof. This is preferably accomplished by providing a suitable absorber vessel charged with the adsorbent in a fixed bed, and then contacting the fluoride-contaminated fluid through the fixed bed. | 06-30-2011 |
| 20110186522 | REMOVAL OF NUISANCE ANION AND ANIONIC MATERIALS USING POLYALKYLENEIMINES SUCH AS POLYETHYLENEIMINE - The present invention features a method of removing one or more nuisance anionic materials, such as pharmaceuticals and dyes, from a solution, such as wastewater. Related aspects of the invention include an apparatus and kits for carrying out the methods of the invention. | 08-04-2011 |
| 20110203995 | Device for performing a chemical transformation in fluidic media - A device is provided for performing chemical transformation in a fluid, with a flow distributor having at least one fluid medium inlet, at least one fluid medium outlet, and at least one confinement wherein the chemical transformation is performed; and a means for rotating, rocking, wagging, or oscillating the device. At least one confinement may be equipped with a provision for providing heat, cooling, sound, light or other types of radiation, such provision being contacted to an external source through an actuator shaft. The flow distributor may be provided with sectors connected with the centrally located fluid medium inlet and a designated peripheral fluid medium outlet. The means for rotating, rocking, wagging, or oscillating the device may be an element producing magnetic fields or a shaft mechanically connected to an external actuating device. | 08-25-2011 |
| 20110284471 | ALGINATE IMPROVEMENT - A method is described use of hydrocolloids for removal of organic and inorganic pollutants from a continuous stream of liquid where chemical composition of the water inhibits the reactants for linking/cross linking hydrocolloids. The method is comprising the steps of enabling said reactants present in the liquid stream and bring them to reaction with the hydrocolloid already brought to attachment with pollutants, where after flock formation allows for separation. Applications of the method are also described. | 11-24-2011 |
| 20110303611 | Molecularly Imprinted Polymers - Disclosed is a cross-linked molecularly imprinted polymer including cross-linked chitosan having selective binding sites for phosphate ions, phosphate containing molecules, or a combination of both. | 12-15-2011 |
| 20120111796 | Boron Selective Ionic Liquids and Polymeric Ionic Liquids, Methods of Making and Methods of Use Thereof - Boron selective ionic liquids and polymeric ionic liquids, methods of making and methods of using the same are disclosed. | 05-10-2012 |
| 20120145639 | MODIFIED CLAY SORBENTS - The present invention relates to modified clay sorbents which may be used as sorbents for chemical compounds. In addition, the present invention also relates to the use of modified clay sorbents for the sorption of chemical compounds. The modified clay sorbents of the present invention have particular application for the sorption of anionic and/or hydrophobic compounds. | 06-14-2012 |
| 20120199538 | SULPHUR REMOVAL - A process for desulfurizing a process fluid includes contacting a sulphur compound containing feed stream with an absorbent including an iron, copper or nickel compound capable of forming a metal sulphide, a support material, a first binder and a second binder where the first binder is a cement binder and the second binder is a high aspect ratio aluminosilicate clay binder having an aspect ratio >2 and a ratio of the first binder to the second binder is in the range 2:1 to 3:1. | 08-09-2012 |
| 20120261347 | NON-METAL-CONTAINING OXYANION REMOVAL FROM WATERS USING RARE EARTHS - The present disclosure is directed to the use of rare earth-containing additives, particularly rare earth-containing additives comprising rare earths of plural oxidation states, to remove non-metal-containing oxyanions. | 10-18-2012 |
| 20130168320 | ORGANIC TEMPLATED NANOMETAL OXYHYDROXIDE - Disclosed are granular composites comprising a biopolymer and one or more nanometal-oxyhydroxide/hydroxide/oxide particles, along with methods for the preparation and use thereof. | 07-04-2013 |
| 20130175222 | WATER PURIFICATION DEVICE - A water purification device includes a housing including a first chamber in communication with a second chamber, a first filtration stage, and a second filtration stage. The first chamber has the first filtration stage and the second filtration stage. The filtration stages and chambers are arranged in a serial relationship to another filtration stage and chamber, respectively. The first filtration stage includes inorganic particles and the second filtration stage includes a biocide. At least 95 percent of the inorganic particles will pass through about 20,000 micron screen and at least 95 percent will not pass thru about 20 micron screen. The inorganic particles have a cation exchange capacity of 1 to 200 milli-equivalents per 100 grams. The inorganic particles will become charged and have a charge of about 1 to about 500 millivolts with ions from the biocide when the device is filled with water. | 07-11-2013 |
| 20130206700 | RADIAL FLOW COLUMN INCLUDING ZERO-VALENT IRON MEDIA - Aspects and embodiments of the present disclosure are directed to apparatus and methods of filtering a fluid to reduce a level of at least one contaminant therein. The filtering of the fluid may be accomplished with a radial flow filtration column comprising a fluid chamber having an inlet, an outlet, and a side wall, an inner permeable retainer positioned in the fluid chamber, an outer permeable retainer positioned in the fluid chamber spaced apart from and surrounding the inner permeable retainer, a media bed compartment formed between the inner permeable retainer and the outer permeable retainer, a media bed comprising zero-valent iron disposed within the media bed compartment, and an adjustable element biased into the media bed compartment and configured to maintain a predetermined packing density of a media bed to be disposed within the media bed compartment. | 08-15-2013 |
| 20130240452 | METHODS, APPARATUS AND SYSTEMS FOR POLISHING WASTEWATER UTILIZING NATURAL MEDIA FILTRATION - Wastewater treatment systems, methods and apparatus for polishing a wastewater stream comprising a plurality of contaminants are provided. One system includes a vessel containing a plurality of natural media filtration agents selected to remove selected ones of the plurality of contaminants from the wastewater stream. In one embodiment, the vessel includes a bed of bauxite residue and at least one other natural media filtration agent. In another embodiment, the vessel includes a bed of compost and at least one other natural media filtration agent. The vessel includes a wastewater inlet that is in fluid communication with one or more of the natural media filtration agents. The vessel includes a wastewater outlet that is in fluid communication with one or more of the natural media filtration agents. | 09-19-2013 |
| 20130270190 | Extraction Of Anions From Solutions And Mixtures Using Hyperbranched Macromolecules - Hyperbranched macromolecules and methods are described for selectively filtering contaminants such as anions from water and non-aqueous solutions, particularly in the presence of competing contaminants including other anions. The hyperbranched macromolecules may contain 2-hydroxyalkyl, 2-methyl-2-hydroxylalkyl, and other groups, which may be hydrophilic or hydrophobic. The molecules may preferentially bind to the contaminant at interest at low pH, and release the contaminant at a pH of about 9. The molecules may be used to filter contaminants including perchlorate and nitrate even in the presence of high sulfate concentrations. | 10-17-2013 |
| 20130299431 | Capsule-type Compound, Anion Removing Agent, and Method for Removing Anion - The present invention provides a capsule-type compound consisting of: a capsule-type divalent cation consisting of a capsule framework represented by the following formula (1) and a sulfate ion (SO | 11-14-2013 |
| 20130334140 | TREATMENT OF EFFLUENTS FROM THE ELECTROPLATING INDUSTRY - The invention relates to a process for separating fluorinated acids, in particular perfluorocarboxylic acids and perfluorosulphonic acids, or salts thereof from metal-containing, aqueous solutions, in particular those which occur in the electroplating industry, by means of anion exchangers. | 12-19-2013 |
| 20140027382 | FILTER MATERIALS, FILTERS, FILTERING SYSTEMS AND METHODS OF FILTERING - Embodiments of the present disclosure provide metal ligand nanoparticles, particles including the metal ligand nanoparticles, filters including the metal ligand nanoparticles and/or particles, devices and systems for filtering a fluid, compositions including the metal ligand nanoparticles, and the like. | 01-30-2014 |
| 20140048489 | ION-EXCHANGE FIBERS AND METHOD FOR PRODUCING SAME, METHOD FOR REMOVING AND ADSORBING CHEMICAL SUBSTANCE IN WATER, AND DEVICE FOR REMOVING AND ADSORBING CHEMICAL SUBSTANCE IN WATER - Provided is an ion-exchange fiber including a polymer A obtained by introducing an ion-exchangeable substituent to 100 parts by weight of an acrylic polymer that is obtained by polymerization of a monomer composition containing 30% by weight or more of acrylonitrile with respect to 100% by weight of the composition and a polymer B obtained by introducing an ion-exchangeable substituent to 1 part by weight or more and 100 parts by weight or less of an epoxy group-containing polymer. Each ion-exchangeable substituent is introduced by reaction with an amine compound and is an ion-exchangeable substituent derived from the amine compound. A method for producing the ion-exchange fiber is also provided. | 02-20-2014 |
| 20140158629 | USE OF A DUAL POLYMER SYSTEM FOR ENHANCED WATER RECOVERY AND IMPROVED SEPARATION OF SUSPENDED SOLIDS AND OTHER SUBSTANCES FROM AN AQUEOUS MEDIA - A method uses anionic and cationic polymers added in, any order or simultaneously, to aqueous media for the removal of substances. The sequential addition of the two biopolymers, anionic xanthan, followed by cationic chitosan, causes the rapid formation of very large and cohesive fibrillar aggregates that may exhibit high solids to liquid ratios and that quickly settle out from the aqueous media. The aqueous media can be easily separated from the large fibrillar aggregates by settling under gravity or by filtration through a porous containment device, such as a synthetic or non-synthetic woven or non-woven fabric including a geotextile fabric or a solid containment device containing a solid mesh screen. | 06-12-2014 |
| 20150034560 | METHOD FOR SELECTIVELY BINDING AND SEPARATING PHOSPHATE ANIONS - Disclosed is a method for selectively binding and separating phosphate anions from a liquid medium by providing a cross-linked molecularly imprinted polymer including cross-linked chitosan having selective binding affinity for phosphate ions, phosphate containing molecules, or a combination of both. | 02-05-2015 |
| 20150352270 | SORBENT CARTRIDGE CONFIGURATIONS FOR IMPROVED DIALYSATE REGENERATION - A regeneration system that has a first regeneration module containing a first chosen regenerative substance; a second regeneration module containing the first chosen regenerative substance; and a first mixing chamber. A first outlet stream of a fluid sequentially exits the first mixing chamber, flows through the first regeneration module in fluid communication with the first chosen regenerative substance and returns to the first mixing chamber, and a second outlet stream of the fluid sequentially exits the first mixing chamber and flows through the second regeneration module in fluid communication with the first chosen regenerative substance. | 12-10-2015 |
| 20160002068 | METHOD OF PRODUCTION OF GRANULATED MICELLE-CLAY COMPLEXES: APPLICATION FOR REMOVAL OF ORGANIC, INORGANIC ANIONIC POLLUTANTS AND MICROORGANISMS FROM CONTAMINATED WATER - The present invention pertains to a complex comprising micelles of organic cation adsorbed on clay in granulated form, to a method for obtaining an aqueous solution substantially free of organic, inorganic anionic pollutants, or microorganisms present therein, comprising contacting the aqueous solution containing said pollutants with such a complex and to a system for obtaining an aqueous solution substantially free of organic, inorganic anionic pollutants, or microorganisms present therein employing the granulated complex. | 01-07-2016 |
| 20160082410 | PERMEABLE POROUS COMPOSITE - A porous and permeable composite for treatment of contaminated fluids characterized in that said composite includes a body of iron particles and 0.01-10% by weight of at least one functional ingredient distributed and locked in the pores and cavities of the iron body. Also, methods of making a permeable porous composite for water treatment. Also, use of a permeable porous composite for reducing the content of contaminants in a fluid, wherein said fluid is allowed to pass through the permeable composite. | 03-24-2016 |
| 20160122207 | METHOD FOR SURFACE TREATMENT OF SIEVED STEEL SLAG FOR INCREASING PHOSPHORUS REMOVAL CAPACITY - A method of preparing a contaminant phosphorous adsorber comprises providing a slag material, sieving the slag material to remove particles smaller than about 0.5 millimeters in diameter and precipitating amorphous Al hydroxide minerals on the surface of the sieved slag prior to exposing the slag to phosphorous. | 05-05-2016 |
| 20160198717 | METHOD OF PRODUCING POLYANILINE ZORCORNIA NANOCOMPOSITE AND USES THEREOF | 07-14-2016 |
| 210684000 | Metal complexed (e.g., chromate, ferricyanide, chlorplatinate, etc.) | 13 |
| 20080223789 | MATERIAL AND A METHOD FOR REMOVING OXO-ANIONS AND METAL CATIONS FROM A LIQUID - A material for removing oxo-anions and metal cations from a liquid. This material is characterized in that it comprises hyperthermophilic ferritin. The present invention also relates to a method for removing at least one of oxo-anions and metal cations from a liquid. This method is characterized in that a material comprising hyperthermophilic ferritin is used as filter material. It is especially preferred that said liquid is comprised of water. The invention also relates to the use of hyperthermophilic ferritin for removing metal cations and oxo-anions from a liquid. | 09-18-2008 |
| 20080264868 | Molecularly Imprinted Polymer Ion Exchange Resins - A molecularly imprinted polymer ion exchange resin for selectively removing one or more inorganic ions in a liquid medium is disclosed and described. The exchange resin can include a bead having a porous structure and comprising a cross-linked molecularly imprinted polymer having molecular sized cavities adapted to selectively receive and bind a specific inorganic ion in a liquid medium. A process for preparing a molecularly imprinted polymer ion exchange resin can include (a) polymerizing a polmerizable mixture in the presence of an inorganic ion imprinting complex to form a bead, said inorganic ion imprinting complex including a ligand and an inorganic ion; and (b) removing the inorganic ions from the bead to form the molecularly imprinted polymer ion exchange resin, the bead having a porous structure and comprising a cross-linked molecularly imprinted polymer having molecular sized cavities adapted to selectively receive and bind a specific inorganic ion in an liquid medium. | 10-30-2008 |
| 20080272055 | Conditioning of ion exchangers for adsorption of oxoanions - The present invention relates to the use of inorganic salts for increasing the adsorption of oxoanions and/or thioanalogues thereof to metal-doped ion exchangers, preferably to iron oxide/iron oxyhydroxide-containing ion exchangers, preferably from water or aqueous solutions, and also the conditioning of these metal-doped ion exchangers having increased adsorption behaviour toward oxoanions and/or thioanalogues thereof by using inorganic salts with the exception of amphoteric ion exchangers which have both acidic and basic groups as functional groups. | 11-06-2008 |
| 20090045137 | Method of producing monodisperse chelate resins - The present invention relates to a method of producing novel monodisperse chelate resins based on crosslinked polymer beads containing aminomethyl groups and/or aminomethyl nitrogen heterocyclic groups that have a high uptake capacity for heavy metals and rapid kinetics. | 02-19-2009 |
| 20090084731 | BIOGENIC TEMPLATE FOR ENHANCED SORPTION OF CONTAMINANTS - A method of manufacturing a remediation material is disclosed. The method includes providing a biogentic material as a substrate, preparing the surface of the substrate for a chemical reaction, and performing template-driven surface derivitization on the surface of the substrate to provide a net positive charge on the surface of the substrate. The remediation material may be placed into contact with surface water, ground water, soil, or sediment by at least one of a permeable reactive barrier, direct well injection, or direct introduction of the remediation material into soil or sediment, to remove contaminants from the surface water, ground water, soil, or sediment. | 04-02-2009 |
| 20090266766 | Wastewater Purification With Nanoparticle-Treated Bed - Nanoparticle-treated particle packs, such as sand beds, may effectively filter and purify liquids such as waste water. When tiny contaminant particles in waste water flow through the particle pack, the nanoparticles will capture and hold the tiny contaminant particles within the pack due to the nanoparticles' surface forces, including, but not necessarily limited to van der Waals and electrostatic forces. Coating agents such as alcohols, glycols, polyols, vegetable oil, and mineral oils may help apply the nanoparticles to the particle surfaces in the filter beds or packs. | 10-29-2009 |
| 20100213135 | METHOD AND SYSTEM FOR REMOVAL OF INORGANIC ANIONIC POLLUTANTS FROM CONTAMINATED WATER - There is provided a method or a system for obtaining an aqueous solution substantially free of inorganic anionic pollutants selected from perchlorate, cyanide or chromate present therein, comprising contacting the aqueous solution containing said pollutants with a complex comprising micelles of an organic cation adsorbed on clay for removal of said pollutants from the aqueous solution. The method and system may also utilize a mixture of a complex of an organic cation adsorbed on clay as a micelle, and a granular material or a complex of an organic cation adsorbed on clay as a micelle. There is also provided a system comprised of a column accommodating the mixture of a complex of an organic cation adsorbed on clay as a micelle, and a granular material. | 08-26-2010 |
| 20120012530 | MOLECULARLY IMPRINTED POLYMER ION EXCHANGE RESINS - A molecularly imprinted polymer ion exchange resin for selectively removing one or more inorganic ions in a liquid medium is disclosed and described. The exchange resin can include a bead having a porous structure and comprising a cross-linked molecularly imprinted polymer having molecular sized cavities adapted to selectively receive and bind a specific inorganic ion in a liquid medium. A process for preparing a molecularly imprinted polymer ion exchange resin can include (a) polymerizing a polmerizable mixture in the presence of an inorganic ion imprinting complex to form a bead, said inorganic ion imprinting complex including a ligand and an inorganic ion; and (b) removing the inorganic ions from the bead to form the molecularly imprinted polymer ion exchange resin, the bead having a porous structure and comprising a cross-linked molecularly imprinted polymer having molecular sized cavities adapted to selectively receive and bind a specific inorganic ion in an liquid medium. | 01-19-2012 |
| 20130168321 | NITROGEN-CONTAINING ACTIVATED CARBON MATERIAL - An activated carbon material for removing a contaminant from a liquid. The activated carbon material can be a plurality carbon grains that have a pore volume of approximately 0.1 milliliters per gram (mL/g) in the range of less than about 15 angstroms in width. The carbon grains can also have or contain a nitrogen-containing species having a concentration of more than 2 atomic percent nitrogen. A plurality of the carbon grains can be used to make a contactor that is operable to remove or reduce perchlorate having a concentration of 20 parts per billion (ppb) to less than 4 ppb from 4,500 bed volumes of water with the nitrogen-containing species leaching off of the carbon grains less than 0.1 mg/L. The activated carbon material can also be electrochemically regenerated. | 07-04-2013 |
| 20140158630 | High Capacity Perchlorate-Selective Resins From Hyperbranched Macromolecules - A resin is provided for selectively binding to perchloride and related anions (e.g., TcO | 06-12-2014 |
| 20150021271 | Method And System Of Enhancing Removal Of Toxic Anions And Organic Solutes In Sorbent Dialysis - A method of sorbent dialysis is provided for enhanced removal of uremic toxins, such as toxic anions and/or organic solutes, from spent dialysate. More highly adsorbable zirconium polymeric complexes of these anions and/or organic solutes can be initially formed in spent dialysate by treatment with zirconium salt solution or other zirconium cation source, and then removed with adsorbent to provide purified or regenerated dialysate. Sorbent dialysis systems for detoxifying spent dialysate containing toxic anions and organic solutes are also provided. | 01-22-2015 |
| 20150076072 | HIGH-CAPACITY ANION EXCHANGE MATERIALS - The present disclosure is directed to polymeric beads, methods of making the beads, and methods of using the beads as high-capacity anion exchange materials. In particular, the disclosure provides polymeric beads comprising a cross-linked polyamine and having a crush strength of about 250 g/bead or more. Preferably, the beads are substantially spherical. Also disclosed are polymeric beads comprising a cross-linked polyamine that has a substantial number of both strong base sites and weak base sites. Methods of using the polymeric beads in various industrial applications, such as groundwater remediation, radio waste management, municipal wastewater management, demineralization, toxin removal, mining, food refinery, research, agriculture, and the like, are also disclosed herein. | 03-19-2015 |
| 20160008805 | MICROWAVE ASSISTED SYNTHESIS OF METAL DIOXIDE BASED HYBRID MEDIA | 01-14-2016 |
| 210685000 | Including cation | 4 |
| 20130200001 | MAGNETITE AND BIRNESSITE AGGREGATE-FORM MIXTURE, SYNTHESIS METHOD THEREFOR, AND WATER-TREATMENT METHOD USING MIXTURE - The present invention relates to a magnetite-birnessite mixture, to a synthesis method therefor, and to a water-treatment method using the same. The magnetite-birnessite mixture synthesis method according to the present invention includes: a first synthesis step in which magnetite is synthesized; a second synthesis step in which manganese is made to adsorb onto the surface of the magnetite by supplying manganese while maintaining a basic state in the presence of the magnetite, and then synthesizing birnessite on the surface of the magnetite by supplying an oxidizing agent and sodium, thereby synthesizing a mixture in which magnetite and birnessite are bound together; and a purification step in which the mixture of magnetite and birnessite is purified. | 08-08-2013 |
| 210686000 | Utilizing mixed bed or amphoteric material | 3 |
| 20090294367 | METHOD AND APPARATUS FOR CONDENSATE DEMINERALIZATION - A method and an apparatus for performing condensate demineralization which are capable of producing a high-purity treated water containing low concentrations of sulfate ions and nitrate ions derived from TOC eluted from a cation exchange resin and anion exchange resin. A condensate demineralization method for performing a demineralization treatment of a condensate from a boiling-water reactor nuclear power plant using an ion exchange resin, wherein the method employs a mixed bed containing a uniform mixture of a strongly acidic, uniform particle size, gel-type cation exchange resin having an average particle size within a range from 450 to 600 μm and a resin particle existence ratio within a range specified by average particle size ±100 μm of not less than 95%, and a strongly basic type 1 porous anion exchange resin having a Gaussian particle size distribution, the mixed bed is mixed uniformly so that the existence ratio of the anion exchange resin is within ±5% of the design standard value across the entire mixed bed, and the demineralization treatment is performed by bringing the condensate into contact with the mixed bed. | 12-03-2009 |
| 20120181232 | Method of Preparation of Samples for Analysis and Cartridge Therefore - A method of preparing an aqueous sample for use in an analytical process, the sample comprising at least one water-soluble analyte derived from a foodstuff, the method comprising the steps of: (a) providing a solid-phase extraction cartridge comprising first and second sorbent materials arranged to absorb thereon different respective chemical components, the cartridge comprising a chamber containing the first and second sorbent materials and having an inlet and an outlet; (b) flowing through the inlet an aqueous sample comprising at least one water-soluble analyte derived from a foodstuff and impurities, thereby to dispose the sample within at least one of the first and second sorbent materials; (c) flowing through the inlet a washing liquid so as at least partially to separate the at least one water-soluble analyte and the impurities within the first and second sorbent materials; and (d) eluting the at least one water-soluble analyte from the outlet of the cartridge by flowing an elution liquid into the inlet. | 07-19-2012 |
| 20160060140 | IMMOBILIZATION OF PARTICLES ON A MATRIX - A method for removing a contaminant from a fluid, the method comprising contacting the fluid comprising a contaminant at a first concentration with a purification medium for a time sufficient for binding of the contaminant to the medium to provide and effluent comprising the contaminant at a second concentration, wherein the second concentration is lower than the first concentration. | 03-03-2016 |
