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9102results about "Water/sewage treatment by ion-exchange" patented technology
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Treating produced waters
InactiveUS20070102359A1Complicate purificationIncrease ratingsUltrafiltrationTreatment involving filtrationEmulsionUnit operation
The present invention is directed to various sets of unit operations for treating aqueous effluents and logic for designing and effecting the treatment. The unit operations include stabilization of subterranean waters, sequential oxidation steps to alter selected target materials, oxidation to break up emulsions prior to removal of the emulsion components, and intense oxidation to break up difficult-to-remove organic target materials.
Owner:HW PROCESS TECH
Cartridges useful in cleaning dialysis solutions
InactiveUS20020112609A1Avoid a lotSolve the blockageIsotope separationLoose filtering material filtersHemodialysis membraneChemistry
Owner:RENAL SOLUTIONS
Filter cartridge assemblies and methods for filtering fluids
Filter cartridge assemblies and housings are provided and include a tubular housing having an inner wall, an outer wall, a first end, and a second end. The housings include inner walls with shoulders or other radially-inwardly extending flow directors at the intersections of adjacent sections of the tubular body. The assemblies include a plurality of filter media sections within the housing, and each of the plurality of filter media sections preferably has a different filter media composition. One or more of the filter media sections traverses one or more of the shoulders or other radially-inwardly extending flow directors such that the flow directors evenly direct the flow of fluid through the assembly. The assemblies find particular applicability in dialysis systems.
Owner:RENAL SOLUTIONS
Methods and compositions for extraction and transesterification of biomass components
InactiveUS20090234146A1Fatty oils/acids recovery from wasteFatty acid esterificationTransesterificationBiofuel
Methods and compositions are disclosed for the direct transesterification and extraction of bio-lipids and bio-oils in the production of biofuel, particularly fatty acid methyl ester products.
Owner:UNIV OF HAWAII
Cartridges useful in cleaning dialysis solutions
InactiveUS7033498B2Avoid a lotSolve the blockageZirconium compoundsLoose filtering material filtersMedicineHemodialysis membrane
Owner:RENAL SOLUTIONS
Systems and methods for performing peritoneal dialysis
ActiveUS7867214B2Strengthen the systemImprove methodSolvent extractionIon-exchanger regenerationMetabolic wasteSorbent
In a peritoneal dialysis embodiment of the present invention, spent dialysate from the patient's peritoneal cavity passes, along a patient loop, through a dialyzer having a membrane that separates waste components from the spent dialysate, wherein the patient loop returns fresh dialysate to the patient's peritoneal cavity. The waste components are carried away in a second regeneration loop to a regeneration unit or sorbent cartridge, which absorbs the waste components. The regeneration unit removes undesirable components in the dialysate that were removed from the patient loop by the dialyzer, for example, excess water (ultrafiltrate or UF), toxins and metabolic wastes. Desirable components can be added to the dialysate by the system, such as glucose and electrolytes. The additives assist in maintaining the proper osmotic gradients in the patient to perform dialysis and provide the necessary compounds to the patient.
Owner:BAXTER INT INC
Microfluidic Chemical Reaction Circuits
InactiveUS20080281090A1Shaking/oscillating/vibrating mixersTransportation and packagingChemical reactionCompound (substance)
Owner:CALIFORNIA INST OF TECH +3
Separation apparatus and separation method
InactiveUS20060000772A1Improve efficiencyHigh activityIon-exchange process apparatusSemi-permeable membranesBuffer solutionAnalytical chemistry
A channel (103) is formed in a substrate (101), and a portion of the channel (103) is provided with a separating portion (107). A number of pillars are formed in the separating portion (107), and an adsorptive substance layer having an adsorptive substance, which exhibits a specific interaction for a specific substance, immobilized on the surface thereof, is formed. Once a sample is introduced into the channel (103), the specific substance is adsorbed on the adsorptive substance layer to be separated from other components. After washing the inside of the channel (103) with a buffer solution, the specific substance is desorbed from the adsorptive substance layer by flowing a eluting solution through the channel (103) and the specific substance is recovered.
Owner:NEC CORP
Point-of-use water purification system with a cascade ion exchange option
InactiveUS6080313AHigh purityEasy to install and replaceSolid sorbent liquid separationLoose filtering material filtersFiltrationIon exchange
A modular water treatment and purification system, suitable for home use, is connected to a water supply and contains a closed fluid treatment circuit extending to a water outlet. The closed fluid circuit flows through a plurality of replaceable water treatment modules each having a specific water treatment function, such as the removal of a particular material from the water by the use of filtration, carbon adsorption, ion exchange or the addition of a chemical to balance the desired water conditions. Preferably the circuit also includes traversing a radiation device, for example an ultra violet light, for the purpose of sanitizing the water.
Owner:KELADA MAHER I
Method for Preparing Flavorful and Aromatic Compounds
InactiveUS20100037903A1Add flavorIncrease aromaTobacco treatmentSolid sorbent liquid separationMaillard reactionPyrazine
The invention provides a method of preparing a purified, pyrazine-containing aqueous composition by mixing a reducing sugar, a base, and an amino acid in water to produce a mixture; heating the mixture for a time and under conditions conducive to Maillard reactions such that a flavorful and aromatic aqueous solution is formed, the aqueous solution comprising a plurality of pyrazines and a first 4-methylimidazole concentration; distilling the aqueous solution to produce an aqueous distillate comprising a plurality of pyrazines and having a second 4-methylimidazole concentration lower than the first 4-methylimidazole concentration; and collecting the aqueous distillate. The invention also includes flavorful and aromatic aqueous compositions formed by this inventive method, as well as tobacco products (e.g., smokable materials, smoking articles, and smokeless tobacco) incorporating the flavorful and aromatic composition.
Owner:R J REYNOLDS TOBACCO COMPANY
Method for remote monitoring of water treatment systems
InactiveUS6954701B2Rule out the possibilityNegating human error or tamperingUltrafiltrationSolid sorbent liquid separationWater treatment systemQuality assurance
A method of monitoring the daily operating performance parameters for water treatment processes through the collection of localized data. The data is manipulated to generate preconfigured performance, maintenance, and quality assurance reports and further provide automatic submission of data as required for regulatory review of certain water treatment systems such as potable water treatment. The data is collected from sensors located at an equipment site and transferred to a remote computer located by use of the Internet, further all data received and used for generation of reports is also accessible by Internet connection and be delivered directly to the regulatory agency without additional process.
Owner:WATEREYE +1
Positively charged membrane
InactiveUS6780327B1High rateHigh charge densityCation exchanger materialsIon-exchanger regenerationPorous substrateFiltration
The present invention provides a positively charged microporous membrane having a protein binding capacity about 25 mg / ml or greater comprising a hydrophilic porous substrate and a crosslinked coating that provides a fixed positive charge to the membrane. The present invention further provides a positively charged microporous membrane comprising a porous substrate and a crosslinked coating comprising pendant cationic groups. The membranes of the present invention find use in a variety of applications including ion-exchange chromatography, macromolecular transfer, as well as detection, filtration and purification of biomolecules such as proteins, nucleic acids, endotoxins, and the like.
Owner:PALL CORP
Disposable pipette extraction
Owner:BREWER WILLIAM E
Nanosize electropositive fibrous adsorbent
InactiveUS6838005B2Improve the immunityEfficient precipitationIon-exchanger regenerationLoose filtering material filtersFiberParticulates
Aluminum hydroxide fibers approximately 2 nanometers in diameter and with surface areas ranging from 200 to 650 m2 / g have been fount to be highly electropositive. When dispersed in water they are able to attach to and retain electronegative particles. When combined into a composite filter with other fibers or particles they can filter bacteria and nano size particulates such as viruses and colloidal particles at high flux through the filter. Such filters can be used for purification and sterilization of water, biological, medical and pharmaceutical fluids, and as a collector / concentrator for detection and assay of mirobes and viruses. The alumina fibers are also capable of filtering sub-micron inorganic and metallic particles to produce ultra pure water. The fibers are suitable as a substrate for growth of cells. Macromolicules such as proteins may be separated from each other based on their electronegative charges.
Owner:ARGONIDE CORP
Water treatment system and method
ActiveUS20050103722A1Water treatment parameter controlIon-exchange column/bed processesWater treatment systemWater source
A water treatment system provides treated or softened water to a point of use by removing a portion of any hardness-causing species contained in water from a point of entry coming from a water source, such as municipal water, well water, brackish water and water containing foulants. The water treatment system typically treats the water containing at least some undesirable species before delivering the treated water to a point of use. The water treatment system has a reservoir system in line with an electrochemical device such as an electrodeionization device. The water treatment system has a sensor or a set of sensors for measuring at least one property of the water or an operating condition of the treatment system. The water treatment system also has a controller for adjusting or regulating at least one operating parameter of the treatment system or a component of the water treatment system to optimize the operation and performance of the system or components of the system to supply water tailored to quality requirements.
Owner:EVOQUA WATER TECH LLC
Hemodialysis systems and methods
ActiveUS8357298B2Mechanical/radiation/invasive therapiesSolvent extractionHaemodialysis machineDialysate flow
Owner:DEKA PROD LLP
Membrane based fluid treatment systems
InactiveUS7186344B2Readily availableImprove the level ofLiquid separation auxillary apparatusIon-exchanger regenerationMembrane foulingTreatment system
A process for removing soluble and insoluble inorganic, organic, and microbiological contaminants from a fluid stream employing a pretreatment module, a post-treatment module, a recycle stream module or any combination thereof, and a membrane module, is provided. The process provided reduces the problems associated with membrane fouling and increases contaminant removal capacity.
Owner:WATERVISIONS INT
Non-woven media incorporating ultrafine or nanosize powders
InactiveUS20080026041A1Improve efficiencyLarge capacityMaterial nanotechnologyTreatment involving filtrationFiberActivated carbon
The invention is a fibrous structure for fluid streams that is a mixture of nano alumina fibers and second fibers arranged in a matrix to create asymmetrical pores and to which fine, ultrafine, or nanosize particles such as powdered activated carbon are attached without the use of binders. The fibrous structure containing powdered activated carbon intercepts contaminants from fluid streams. The invention is also a method of manufacturing and using the fibrous structure.
Owner:ARGONIDE CORP
Purification of proteins
ActiveUS20080255027A1Ion-exchange process apparatusPeptide/protein ingredientsElutionProcess conditions
The present invention relates to a selectively soluble polymer capable of binding to a desired biomolecules in a mixture containing various biological materials and the methods of using such a polymer to purify a biomolecule from such a mixture. The polymer is soluble in the mixture under a certain set of process conditions such as pH or temperature and / or salt concentration and is rendered insoluble and precipitates out of solution upon a change in the process conditions. The polymer is capable of binding to the desired biomolecule (protein, polypeptide, etc) and remains capable of binding to that biomolecule even after the polymer is precipitated out of solution. The precipitate can then be filtered out from the remainder of the stream and the desired biomolecule is recovered such as by elution and further processed.
Owner:MILLIPORE CORP
Liquid crystal display device and method of preventing image sticking thereon
ActiveUS20060023137A1Avoid it happening againSuppressing washIon-exchange process apparatusWater/sewage treatment by magnetic/electric fieldsCapacitanceElectricity
A sub picture element electrode directly connected to a thin film transistor is disposed between a floating sub picture element electrode capacitively coupled to a control electrode and a gate bus line in order to prevent injection of electric charges from the gate bus line to the floating sub picture element electrode. Moreover, a shield pattern electrically connected to an auxiliary capacitance bus line is formed between the floating sub picture element electrode and a data bus line. This shield pattern avoids injection of electric charges from the data bus line to the floating sub picture element electrode.
Owner:AU OPTRONICS CORP
Removal of fluorinated surfactants from waste water
The present invention provides a method of removing a fluorinated surfactant from waste water comprising fluoropolymer particles. The method comprises (i) adding a non-fluorinated surfactant to the waste water (ii) contacting the thus obtained waste water with adsorbent particles to adsorb at least a portion of the fluorinated surfactant to the adsorbent particles and (iii) separating the waste water and the adsorbent particles.
Owner:3M INNOVATIVE PROPERTIES CO
Method for separating analyte from a sample
InactiveUS20050194316A1Simple designImprove efficiencyBioreactor/fermenter combinationsBiological substance pretreatmentsAnalyteElution
An analyte is separated from a fluid sample by introducing the sample into a cartridge having a sample port and a first flow path extending from the sample port. The first flow path includes an extraction chamber containing a solid support for capturing the analyte from the sample. The cartridge has a second flow path for eluting the captured analyte from the extraction chamber, the second flow diverging from the first flow path after passing through the extraction chamber. The sample is forced to flow through the extraction chamber and into a waste chamber, thereby capturing the analyte with the solid support as the sample flows through the extraction chamber. The captured analyte is then eluted from the extraction chamber by forcing an elution fluid to flow through the extraction chamber and along the second flow path.
Owner:CEPHEID INC
Adsorption/separation method and a medium for adsorption/separation
InactiveUS6428707B1Increase productionImprove productivityChromatographic cation exchangersCation exchanger materialsChemistrySeparation method
A method for adsorption of a substance from a liquid sample on a fluidized bead or stirred suspension, in which the beads used comprise a base matrix and exhibit a structure having affinity to the substance, characterized in that the structure is covalently bound to the base matrix via an extender. Populations of beads in which the beads contain a filler incorporated in a base matrix and an extender are also described.
Owner:GE HEALTHCARE BIOPROCESS R&D
Filtering water bottle
ActiveUS20120055862A1Improve filtering effectIncrease ratingsGeneral water supply conservationTreatment involving filtrationFiltrationGravity flow
A portable, personal apparatus for treating drinking water comprises a generally tubular or cylindrical filter housing containing filtration media and water-permeable screen or mesh or felt or membrane or netting layer at the top and bottom ends of the filter. The design of the apparatus involves the bottle exterior and interior contouring to the filter and enables the efficient and rapid gravity flow of water in through the filter. The apparatus may be configured such that water is first passed through a top reservoir designed to receive water, followed by a porous mesh, followed by granular filtration and antimicrobial media agitated by turbulent motion of influent water, followed by a porous mesh before reaching a durable and reusable water containment vessel.
Owner:INNOVA DYNAMICS +1
Process for preparing major histocompatibility antigen class II protein and materials in which the same is bound
InactiveUS6630315B1Produce significantIon-exchanger regenerationMicroorganism based processesFiberMajor histocompatibility
This invention provides a process for producing major histocompatibility antigen class II protein (hereinafter referred to as "MHC class II" for short) which occurs on the surfaces of antigen-presenting cells and the like, and MHC class II-bound materials in which MHC class II, alpha and / or beta subunit of MHC class II, or a part thereof is bound to a carrier such as beads, fibers and hollow fibers via covalent bond, as well as a module for removing superantigen using the same. This invention also provides a method for detecting or quantifying superantigens using MHC class II or a part thereof having an affinity to the superantigens, as well as an assay kit therefor.
Owner:TORAY IND INC
Distillation method
A method for distilling ethanol from a mash includes feeding a fluid to a first distillation column. The fluid and a distillate of the first distillation column are delivered to a second distillation column. The fed fluid and / or distillate of the second distillation column is / are purified in a first and / or last step of the method by a membrane separation process.
Owner:WHITE FOX TECH LTD
Method for treating wastewater or produced water
ActiveUS7815804B2Reduce hardnessReduce dissolved solidWaste water treatment from quariesGeneral water supply conservationWastewaterIon exchange
A method or process for treating wastewater containing high organics, silica, boron, hardness, and suspended and dissolved solids. The method includes degasifying the wastewater for the removal of dissolved gases and thereafter chemically softening the wastewater. After the chemical softening step, the wastewater is directed through a media filter or membrane which removes additional solids and precipitants. Thereafter the wastewater is directed through a sodium ion exchange that further softens the wastewater. The effluent from the ion exchange is directed through a cartridge filter and the effluent from the cartridge filter is directed through one or more reverse osmosis units. At a selected phase of the process, prior to the wastewater reaching the reverse osmosis unit or units, the pH of the wastewater is raised and maintained such that the pH of the wastewater reaching a reverse osmosis unit is at a pH greater than 10.5.
Owner:VEOLIA WATER SOLUTIONS & TECH SUPPORT
Carbon nanotube-containing structures, methods of making, and processes using same
InactiveUS7011760B2Large specific surface areaImprove conductivityCarbon compoundsChemical/physical/physico-chemical microreactorsPre treatmentSURFACTANT BLEND
Carbon nanotube structures are disclosed in which nanotubes are disposed over a porous support such as a foam, felt, mesh, or membrane. Techniques of making these structures are also disclosed. In some of these techniques, a support is pretreated with a templated surfactant composition to assist with the formation of a nanotube layer.
Owner:BATTELLE MEMORIAL INST
Wireless stereo headset
ActiveUS20060251277A1MicrophonesHeadphones for stereophonic communicationVoice communicationSound quality
Disclosed is a wireless stereo headset. The wireless stereo headset includes a first headset including a speaker unit and a Bluetooth® enabled module, for converting sound signals received from a device, transmitting the sound signals into sounds and outputting the sounds, and a second headset including a speaker unit and a Bluetooth® enabled module, for selectively receiving a portion of the sound signals which are converted into sounds and outputting the sounds, thereby accomplishing mono sound by using the first headset according to a user's request or achieving stereo sound by using the first and second headsets. The wireless stereo headset can perform voice communication by using only the first headset, while accomplishing stereo sounds by using both the first and second headsets, thereby using the wireless stereo headset to enjoy an improved sound quality.
Owner:SAMSUNG ELECTRONICS CO LTD
Systems and methods for forward osmosis fluid purification
ActiveUS20100155329A1Improve efficiencyFunction increaseGeneral water supply conservationSeawater treatmentSaline waterDesalination
A process for purification of fluids, for example, desalination of seawater or brackish water, using organic solutes in a concentrated water solution for use in a forward osmosis process, to extract fresh water out of salt water through the forward osmosis membrane, and subsequently separating the organic solutes out of the diluted forward osmosis permeate by cloud point extraction, thereby regenerating a concentrated organic solution for recycling to the forward osmosis process, and fresh water for potable water use.
Owner:JFEENG CORP
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