| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 204522000 |
Using both anion and cation selective membranes
| 34 |
| 204537000 |
Using bipolar membrane
| 15 |
| 204536000 |
And using ion exchange material (e.g., suspended particles, etc.)
| 14 |
| 204540000 |
Biological material prepared, recovered, or treated (e.g., urine, etc.) | 5 |
| 20100072066 | Process for electrokinetic migration through liquid membranes - Device and Process for isolating, purifying, concentrating and/or enriching at least one organic compound by electrokinetic migration through liquid membranes by use of an electronic potential and chambers with a preset pH value is described in the present application. The liquid membranes contain an organic solvent capable of transporting an ionized form of said at least one organic compound. | 03-25-2010 |
| 20110120871 | Formation of Layers of Amphiphilic Molecules - To form a layer separating two volumes of aqueous solution, there is used an apparatus comprising elements defining a chamber, the elements including a body of non-conductive material having formed therein at least one recess opening into the chamber, the recess containing an electrode. A pre-treatment coating of a hydrophobic fluid is applied to the body across the recess. Aqueous solution, having amphiphilic molecules added thereto, is flowed across the body to cover the recess so that aqueous solution is introduced into the recess from the chamber and a layer of the amphiphilic molecules forms across the recess separating a volume of aqueous solution introduced into the recess from the remaining volume of aqueous solution. | 05-26-2011 |
| 20120160687 | CHARACTERIZATION OF INDIVIDUAL POLYMER MOLECULES BASED ON MONOMER-INTERFACE INTERACTIONS - The invention relates to a method for detecting a double-stranded region in a nucleic acid by (1) providing two separate, adjacent pools of a medium and a interface between the two pools, the interface having a channel so dimensioned as to allow sequential monomer-by-monomer passage of a single-stranded nucleic acid, but not of a double-stranded nucleic acid, from one pool to the other pool; (2) placing a nucleic acid polymer in one of the two pools; and (3) taking measurements as each of the nucleotide monomers of the single-stranded nucleic acid polymer passes through the channel so as to differentiate between nucleotide monomers that are hybridized to another nucleotide monomer before entering the channel and nucleotide monomers that are not hybridized to another nucleotide monomer before entering the channel. | 06-28-2012 |
| 20140238859 | NUCLEIC ACID SEQUENCING BY ELECTROCHEMICAL DETECTION - Provided herein is technology relating to sequencing nucleic acids and particularly, but not exclusively, to devices, methods, and systems for sequencing-by-synthesis using changes in pH to monitor base addition. In some embodiments the electrochemical hydrogen ion sensor is a microfabricated mixed metal oxide electrode and in some embodiments the electrochemical hydrogen ion sensor is a membrane electrode. Moreover, in some embodiments the device further comprises a reference electrode. Performing the sequencing reaction involves moving solutions and other fluids (e.g., samples, nucleotide solutions, wash solutions) into and out of the reaction vessel. Thus, in some embodiments, the device further comprises a tube or other transport mechanism or pathway attached to the reaction vessel. | 08-28-2014 |
| 20140318969 | UPGRADING PROCESS STREAMS - Biomass (e.g., plant biomass, animal biomass, and municipal waste biomass) is processed to produce useful intermediates and products, such as energy, fuels, foods or materials. Systems, methods and equipment are described for upgrading process streams using electrodialysis or electrodialysis reversal. | 10-30-2014 |
| 204539000 |
Using anion selective membrane | 5 |
| 20120217162 | APPARATUS AND METHOD FOR TREATING NITROGEN COMPOUND-CONTAINING ACIDIC LIQUID - A nitrogen compound-containing acidic liquid such as a monoethanolamine-containing dilute hydrochloric acid waste liquid discharged during the regeneration of condensate demineralizers in nuclear power plants or thermal power plants is efficiently and economically treated. A neutralization dialysis device | 08-30-2012 |
| 20130186760 | METHOD AND DEVICE FOR EXTRACTING AND ENRICHING LITHIUM - A method for extracting and enriching lithium, including: (a) providing an electrodialysis device including an electrodialysis cell; (b) dividing the electrodialysis cell into a lithium salt chamber and a brine chamber using an anion exchange membrane; (c) filling the brine chamber with salt lake brine; (d) filling the lithium salt chamber with a Mg | 07-25-2013 |
| 20140251810 | METHOD FOR REGENERATING AQUEOUS DISPERSIONS AND CELL PACKAGE FOR ELECTRODIALYSIS - The present invention relates to a method for reducing the ionic strength or the concentration of certain polyvalent ions in aqueous dispersions of organic binding agents or inorganic solid bodies by electrodialysis, and a cell package suitable for use in the method. This method permits stabilization of aqueous compositions of the dispersed components by regulating the ionic strength or the concentration of certain polyvalent ions thereby increasing the durability and throughput times of coating baths. More particularly, the method is used in removing polyvalent metal cations from anionically stabilized aqueous binding agent dispersions. A special application exists in removing from autophoretic baths, which contain anionically dispersed organic binding agents and possibly inorganic pigments for forming protective layers on metallic components, polyvalent cations of zinc, iron and aluminum, which accumulate in the bath when components with surfaces comprised at least partially from zinc, iron and/or aluminum, are processed. | 09-11-2014 |
| 20140305800 | SEA WATER DESALINATION SYSTEM - There is disclosed an electrochemical cell for treating water comprising at least one water chamber configured to hold water to be treated; at least one redox electrode comprising reactants capable of accepting and having a reversible redox reaction with at least one negative ion in the water; at least one intercalation electrode capable of accommodating and intercalating at least one positive ion in the water, wherein the intercalation electrode is immersed in the water chamber or separated from the water chamber by an optional porous separator; and an anion exchange membrane separating the redox electrode from the water chamber. The cell can be used to desalinate water having a wide range of salinities, including sea water, and brackish water. The cell can also be used to collect salt, which can subsequently used to concentrate industrial brine. Methods for using the electrochemical cell to treat water, such as desalinate saline solutions are disclosed. Also disclosed are methods for concentrated brine production for making salt. | 10-16-2014 |
| 20150014169 | ELECTROCHEMICAL PROCESSES TO SEPARATE PRODUCTS DERIVED FROM BIOLOGICAL CONVERSIONS - The disclosure relates to efficient methods of controlling biological conversions while simultaneously removing and converting some of the generated products. More specifically, and, for example, the disclosure discloses electrochemical processes to remove and capture potentially toxic ammonium during anaerobic digestions and to remove and capture carboxylic acids during bioethanol production. The disclosure can, thus, be used to enhance bioproduction processes via controlling pH and/or reduction/oxidation, in combination with in situ product recovery. | 01-15-2015 |
| 204535000 |
And using nonion selective membrane | 3 |
| 20100224492 | HEMODIALYSIS AND PERITONEAL DIALYSIS SYSTEMS HAVING ELECTRODEIONIZATION CAPABILITIES - Systems and methods for hemodialysis or peritoneal dialysis having integrated electrodeionization capabilities are provided. In an embodiment, the dialysis system includes a carbon source, a urease source and an electrodeionization unit. The carbon source and urease source can be in the form of removable cartridges. | 09-09-2010 |
| 20120199484 | ELECTRICAL PURIFICATION APPARATUS AND METHODS OF MANUFACTURING SAME - An electrical purification apparatus and methods of making same are disclosed. The electrical purification apparatus may provide for increases in operation efficiencies, for example, with respect to decreased residence times and higher purity water. | 08-09-2012 |
| 20160115045 | PURIFICATION OF ULTRA-HIGH SALINE AND CONTAMINATED WATER BY MULTI-STAGE ION CONCENTRATION POLARIZATION (ICP) DESALINATION - A water stream is passed between two juxtaposed similar ion exchange membranes (AEMs or CEMs), forming an ion depletion and ion enrichment zones when an electric field is applied. As cations are selectively transferred through the CEMs, for example, anions are relocated in order to achieve electro-neutrality, resulting in the concentration drop (increase) in ion depletion (enrichment) zone. Trifurcation of the output channel allows collection of concentrated, dilute and intermediate streams, with the intermediate stream serving as input to the next stage of a serialized implementation. | 04-28-2016 |
| 204541000 |
Organic material prepared, recovered, or treated | 2 |
| 20090178928 | Process for Desalting Glycerol Solutions and Recovery of Chemicals - Processes for desalting glycerol-rich solutions or process streams using electrodialysis are provided. The glycerol-rich process streams are typically byproducts from the production of biodiesel. Following electrodialysis, the resulting aqueous salt solution is placed in a water splitting cell to recover the acid and base components of the salt. These acid and base components, in turn, can be reused in other processes, such as biodiesel production. | 07-16-2009 |
| 20140027285 | PROCESS FOR PURIFYING ABSORBENTS COMPRISING POLYETHYLENE GLYCOL DIMETHYL ETHERS - A process for purifying polyethylene glycol dimethyl ethers (PGDE) based absorbent (known as Selexol®) having acidic contaminants and salts thereof, this process being particularly useful in an acid gas removal loop process (known as Selexol® process). A base, such as ammonium hydroxide (NH | 01-30-2014 |
| 204521000 |
Combined with manufacture or pretreatment of barrier | 2 |
| 20100213066 | LOW SCALE POTENTIAL WATER TREATMENT - An electrochemical treating device having low scale potential is disclosed. The device has a variety of configurations directed to the layering of the anionic exchange and cationic exchange. The treatment device can also comprise unevenly sized ion exchange resin beads and/or have at least one compartment that provides a dominating resistance that results in a uniform current distribution throughout the apparatus. | 08-26-2010 |
| 20110168560 | Nanoporous Semi-Permeable Membrane and Methods for Fabricating the Same - A filter includes a membrane having a plurality of nanochannels formed therein. Functionalized nanoparticles are deposited through self assembly onto surfaces defining the nanochannels so as to decrease the final diameter of the membrane. Methods for making and using the filter are also provided. | 07-14-2011 |
| Entries |
| Document | Title | Date |
|---|
| 20090188798 | ELECTROLYTIC ELUENT RECYCLE DEVICE, APPARATUS AND METHOD OF USE - Electrolytic eluent recycle systems for ion chromatography using a multi-channel electrolytic ion exchange device which integrates suppression, eluent generation, and eluent recycle. The systems recycle the eluent into the analytical system without passing the eluent through the electrode chambers. Also, such systems with a channel for electrolytic removal of ions from the suppression effluent before recycle. | 07-30-2009 |
| 20090242406 | METHODS FOR FABRICATING ELECTROKINETIC CONCENTRATION DEVICES - The present invention provides a device and methods of use thereof in concentrating a species of interest and/or controlling liquid flow in a device. The methods make use of a device comprising a fluidic chip comprising a planar array of channels through which a liquid comprising a species of interest can be made to pass with at least one rigid substrate connected thereto such that at least a portion of a surface of the substrate bounds the channels, and a high aspect ratio ion-selective membrane is embedded within the chip, attached to at least a portion of the channels. The device comprises a unit to induce an electric field in the channel and a unit to induce an electrokinetic or pressure driven flow in the channel. | 10-01-2009 |
| 20100038245 | Electrochemically Driven Pump - A continuous electrochemical pump comprising a water generator compartment, an anode compartment on one side of said generator compartment, a cation exchange barrier, separating the generator compartment from the anode compartment, a first electrode in electrical communication with the anode compartment, a cathode compartment adjacent the generator chamber, an anion exchange barrier, separating the generation compartment from the cathode compartment, and a second electrode in electrical communication with the cathode compartment. Use of the pump as a sample concentrator. A feedback loop for the pump. A reservoir, with or without an intermediate piston, on the output side of the pump. | 02-18-2010 |
| 20100059378 | APPARATUS AND METHOD FOR REMOVAL OF IONS FROM A POROUS ELECTRODE THAT IS PART OF A DEIONIZATION SYSTEM - A method and system for treating a fluid includes an electrode with an outer housing having openings in a side wall thereof, a granular conductive material encapsulated within the outer housing, and an electrical terminal located at least partially within the outer housing and in electrical communication with the granular conductive material, wherein the openings are configured to permit ions in a fluid to be treated to pass there through so as to come into contact with the granular conductive material. The system includes a treatment tank and electrodes within the tank being charged to differing polarities by a voltage source. The method includes applying a first polarity to at least one electrode, oppositely charging one or more of other spaced apart electrodes, and flowing the fluid within the space so as to treat the fluid. | 03-11-2010 |
| 20100294665 | METHOD AND SYSTEM FOR TRANSFERRING AND/OR CONCENTRATING A SAMPLE - A system for transferring and/or concentrating a sample is provided. The system includes a chamber with a membrane brave positioned within the chamber. An electrode assembly is configured to create an electric field across the membrane to move a charged sample through the chamber such that the sample collects and may concentrate on the membrane. The system may include a plurality of membranes. The system may also include a plurality of microchannels outwardly extending from the channel, where the membrane extends along the plurality of microchannels. Aspects of the invention are also directed to a pipette which may be used to transfer and concentrate a sample on a membrane. Certain embodiments are directed to methods and systems for concentrating a nucleic acid sample. | 11-25-2010 |
| 20100307919 | ELECTROLYTIC ELUENT GENERATOR AND METHOD OF USE - An acid or base is generated in an aqueous solution by the steps of:
| 12-09-2010 |
| 20110000789 | Electrodeionization Method and Device With Hydrodynamic Flow Splitting - Method for the removal of ions and ionizable substances from a polar liquid ( | 01-06-2011 |
| 20110284376 | SYSTEMS AND TECHNIQUES FOR ELECTRODIALYSIS - Electrochemical separation devices are configured for lower energy consumption. Techniques for reducing shadow effect may involve providing distance between a spacer screen and an adjacent ion-selective membrane. A spacer having a screen that is thin relative to a surrounding frame may be used. Mild pressure may also be applied to a compartment to promote distance between a spacer screen and an adjacent ion-selective membrane. | 11-24-2011 |
| 20110308953 | METHOD AND APPARATUS FOR DESALINATION AND PURIFICATION - A liquid electrolyte can be desalinated and purified using a system that includes a first electrode and a configuration selected from (a) a second electrode and at least one distinct ion-selective boundary and (b) a second electrode that also serves as the ion-selective boundary. The ion-selective boundary is contained in the liquid conduit adjacent to a porous medium that defines pore channels filled with the liquid and that have a surface charge, and the charge of the ion-selective boundary and the surface charge of the pore channels share the same sign. A liquid including at least one charged species flows through the pore channels, forming a thin diffuse electrochemical double layer at an interface of the liquid and the charged surface of the pore channels. A voltage differential is applied between the electrodes across the porous medium to draw ions in the liquid to the electrodes to produce brine at the electrodes and to create a shock in the dissolved-ion concentration in the bulk volume of the liquid within the pore channels, wherein a depleted zone with a substantially reduced concentration of dissolved ions forms in the liquid bulk volume between the shock and the ion-selective boundary. | 12-22-2011 |
| 20120097541 | APPARATUS AND PROCESS FOR SEPARATION AND SELECTIVE RECOMPOSITION OF IONS - A device and process are disclosed for the separate removal of oppositely charged ions from electrolyte solutions and recombining them to form new chemical compositions. The invention provides the ability to create multiple ion flow channels and then form new chemical compositions therefrom. The process is accomplished by selectively combining oppositely charged ions of choice from different electrolyte solutions via the capacitive behavior of high electrical capacity electrodes confined in insulated containers. | 04-26-2012 |
| 20120118738 | METHOD OF PROVIDING A SOURCE OF POTABLE WATER - An electrical purification apparatus and methods of making same are disclosed. The electrical purification apparatus may provide for increases in operation efficiencies, for example, with respect to current efficiencies and membrane utilization. | 05-17-2012 |
| 20120145547 | ELECTRICAL DEIONIZATION APPARATUS - Electrodeionization methods and apparatus wherein ion exchange membranes are not utilized. Instead, ion exchange materials such as beads, fibers, etc., are disposed in alternating layers of anion exchange (AIX) materials and cation exchange (CIX) materials between opposite polarity electrodes. In a regeneration stage, a current is applied across the electrodes with water splitting occurring along at least one of the interfacial areas between neighboring AIX and CIX materials. The H | 06-14-2012 |
| 20120175257 | SOLID STATE DEVICE - A system that incorporates teachings of the present disclosure may include, for example, a solid-state selector having a vessel for carrying a liquid medium with one or more molecules surrounded by ions, a solid state conductive structure doped with impurities having one or more through-holes extending between two surfaces of the solid state conductive structure positioned within the liquid medium of the vessel, a voltage source coupled to the solid state conductive structure to selectively stimulate the ions surrounding the one or more molecules to pass through the one or more through-holes. Additional embodiments are disclosed. | 07-12-2012 |
| 20120234679 | Nanometric Material Having a Nanopore Enabling High-Sensitivity Molecular Detection and Analysis - There is provided a substantially bare, self-supported single-layer graphene membrane including a nanopore extending through a thickness of the graphene membrane from a first to a second membrane surface opposite the first graphene membrane surface. A connection from the first graphene membrane surface to a first reservoir provides, at the first graphene membrane surface, a species in an ionic solution to the nanopore, and a connection from the second graphene membrane surface to a second reservoir is provided to collect the species and ionic solution after translocation of the species and ionic solution through the nanopore from the first graphene membrane surface to the second graphene membrane surface. An electrical circuit is connected on opposite sides of the nanopore to measure flow of ionic current through the nanopore in the graphene membrane. | 09-20-2012 |
| 20120273355 | PROCESS FOR CLEANING A PROCESS CONDENSATE - The invention discloses a process for cleaning a process condensate | 11-01-2012 |
| 20120312687 | FUNCTIONAL AND REUSABLE ELECTRODEPOSITED COATINGS ON POROUS MEMBRANES - Functionalized membranes for use in applications, such as electrodeionization, can be prepared simply and efficiently by coating a conductive carbon nanotube and polymer membrane with a metal layer; and contacting the coated membrane with a solution comprises at least one electrochemically active and functional compound under conditions suitable for electrochemically depositing the electrochemically active and function compound on a surface of the metal-coated membrane. Such membranes may be reversible modified by chemically or electrochemically oxidizing the metal layer from the polymer membrane surface, thereby, providing a fresh surface which may be re-modified according to the preceding methods. | 12-13-2012 |
| 20120312688 | CATION EXCHANGE MEMBRANE HAVING ENHANCED SELECTIVITY, METHOD FOR PREPARING SAME AND USES THEREOF - The present invention relates to a cation exchange membrane consisting in a polymeric matrix on the surface of which is(are) grafted at least one group of formula —R | 12-13-2012 |
| 20130112560 | SYSTEMS AND METHODS TO ANALYZE MATERIALS OF A SUSPENSION BY MEANS OF DIELECTROPHORESIS - Systems and methods for trapping and moving individual particles of a target material of a suspension are disclosed. In one aspect, a system includes a tube and an electronically addressable float. The float includes one or more arrays of electrodes in which each electrode can be independently addressed to create non-uniform electric fields that trap and isolate target particles near the float. The electrodes can be dynamically operated to move the target particles to particular locations on the float for analysis and collection. | 05-09-2013 |
| 20130126353 | ELECTRODIALYSIS WITH ION EXCHANGE AND BI-POLAR ELECTRODIALYSIS - In a water treatment system described in this specification, an ED device (which may be an EDR device) is combined with an ion exchange unit and a bipolar electrodialysis (BPED) device. The ion exchange unit, for example a weak acid cation exchange unit, is placed upstream of the ED device and removes divalent cations from the feed water to the ED device. The BPED device receives the salt-concentrated solution from the ED device and produces a regenerating solution. This regenerating solution is used to recharge the ion exchange unit when required. The regenerating solution may be an acidic solution. | 05-23-2013 |
| 20130126354 | Electrolyte separation wall for the selective transfer of cations through the wall, manufacturing process and transfer process - An electrolyte separation wall includes an active layer of a material capable of developing intercalation and deintercalation reactions for the selective transfer of cations through the wall and a support layer made of a porous material acting as support for the active layer. A cation selective transfer process uses such a transfer wall. According to a manufacturing process of such a transfer wall, a solution including an active material in powder form, a binder and a solvent are prepared, then the surface of a support layer made of porous material is coated with the solution and the solvent is evaporated. | 05-23-2013 |
| 20130168249 | FLOW DE-IONIZATION USING INDEPENDENTLY CONTROLLED VOLTAGES - An embodiment is a method and apparatus to provide de-ionization. A plurality of cylindrical-shaped conductive membranes are placed in a feed channel having a feed flow with a first flow direction. Each of the conductive membranes encloses a concentration channel having a second flow direction and an electrode positioned inside the conductive membrane. A voltage distribution network coupled to the conductive membranes provides independent voltages across the channels to cause movement of ions in the feed and concentration flows toward the electrode. | 07-04-2013 |
| 20130186759 | HEMODIALYSIS AND PERITONEAL DIALYSIS SYSTEMS HAVING ELECTRODIALYSIS AND ELECTRODEIONIZATION CAPABILITIES - Systems and methods for hemodialysis or peritoneal dialysis having integrated electrodialysis and electrodeionization capabilities are provided. In an embodiment, the dialysis system includes a carbon source, a urease source, an ED/EDI unit. The carbon source, urease source, and/or the ED/EDI unit can be in the form of removable cartridges. | 07-25-2013 |
| 20130256134 | METHODS FOR FABRICATING ELECTROKINETIC CONCENTRATION DEVICES - The present invention provides a device and methods of use thereof in concentrating a species of interest and/or controlling liquid flow in a device. The methods make use of a device comprising a fluidic chip comprising a planar array of channels through which a liquid comprising a species of interest can be made to pass with at least one rigid substrate connected thereto such that at least a portion of a surface of the substrate bounds the channels, and a high aspect ratio ion-selective membrane is embedded within the chip, attached to at least a portion of the channels. The device comprises a unit to induce an electric field in the channel and a unit to induce an electrokinetic or pressure driven flow in the channel. | 10-03-2013 |
| 20140183045 | Electrodesalination System and Method - Systems and methods for the desalination of seawater or brackish water for the purpose of obtaining potable water. Systems may include a combination of electrodialysis and electrodeionization modules. The system configuration and process controls may achieve low energy consumption and stable operation. | 07-03-2014 |
| 20140202861 | APPARATUS AND PROCESS FOR SEPARATION AND SELECTIVE RECOMPOSITION OF IONS - A device and process are disclosed for the separate removal of oppositely charged ions from electrolyte solutions and recombining them to form new chemical compositions. The invention provides the ability to create multiple ion flow channels and then form new chemical compositions therefrom. The process is accomplished by selectively combining oppositely charged ions of choice from different electrolyte solutions via the capacitive behavior of high electrical capacitance electrodes confined in insulated containers. | 07-24-2014 |
| 20140202862 | APPARATUS AND PROCESS FOR SEPARATION AND SELECTIVE RECOMPOSITION OF IONS - A device and process are disclosed for the separate removal of oppositely charged ions from electrolyte solutions and recombining them to form new chemical compositions. The invention provides the ability to create multiple ion flow channels and then form new chemical compositions therefrom. The process is accomplished by selectively combining oppositely charged ions of choice from different electrolyte solutions via the capacitive behavior of high electrical capacitance electrodes confined in insulated containers. | 07-24-2014 |
| 20140332386 | Method of Building Massively-Parallel Ion Concentration Polarization Separation Device - Ion Concentration Polarization (ICP) purification devices and methods for building massively-parallel implementations of the same, said devices being suitable for separation of salts, heavy metals and biological contaminants from source water. | 11-13-2014 |
| 20140339087 | SUPERCAPACITOR DESALINATION CELLS, DEVICES AND METHODS - A supercapacitor desalination cell comprises a first electrode, a second electrode, a spacer disposed between the first and second electrodes, and a monovalent ion selective layer disposed on at least one of the first and second electrodes. A supercapacitor desalination device and a method for desalination of a liquid are further presented. | 11-20-2014 |
| 20140346043 | METHOD OF PROVIDING A CHARGE BARRIER FLOW-THROUGH CAPACITOR SYSTEM - Flow-through capacitors are provided with one or more charge barrier layers. Ions trapped in the pore volume of flow-through capacitors cause inefficiencies as these ions are expelled during the charge cycle into the purification path. A charge barrier layer holds these pore volume ions to one side of a desired flow stream, thereby increasing the efficiency with which the flow-through capacitor purifies or concentrates ions. | 11-27-2014 |
| 20140374256 | PROCESS AND APPARATUS FOR OSMOTIC FLOW CONTROL IN ELECTRODIALYSIS SYSTEMS - An electrodialysis process and apparatus is presented for improving the current efficiency of salty water desalination. The process includes reducing the osmotic and the electro-osmotic flow of water from diluate compartments to concentrate compartments, and between electrode compartments and adjacent compartments, by confinement and hydraulic isolation of their contents in constant volume compartments, so that the tendency of waters entering from diluate compartments to concentrate compartments leads to pressure buildup in the concentrate compartments, reducing the transfer of product desalinated water to the concentrate waste. | 12-25-2014 |
| 20140374257 | METHOD FOR MELT PROCESSING SULFONATED BLOCK COPOLYMERS AND ARTICLES COMPRISING OPTIONALLY AMINE MODIFIED SULFONATED BLOCK COPOLYMERS - The present disclosure provides a method for melt processing a sulfonated block copolymer in which the sulfonic acid or sulfonate functional groups are partially or completely neutralized by an amine, and to articles obtained by the method. Moreover, the shaped articles which are obtained by molding a composition comprising the neutralized sulfonated block copolymer may can be converted into shaped articles which comprise the sulfonated block copolymer(s) employed in the preparation of the amine neutralized block copolymer(s). | 12-25-2014 |
| 20150027890 | PERFORMANCE ENHANCEMENT OF ELECTROCHEMICAL DEIONIZATION DEVICES BY PRE-TREATMENT WITH CATION EXCHANGE RESINS - The methods and systems disclosed here relate to treating water. In certain embodiments, a treatment system comprises an electrochemical water treatment device, a recirculating concentrate stream in fluid communication with the electrochemical water treatment device, a flow control device in fluid communication with a first flow path comprising acidic water and configured to be in fluid communication with the recirculating concentrate stream, and a second flow path comprising feed water and configured to be in fluid communication with the recirculating concentrate stream, and a control system in communication with the flow control device. The treatment system may further comprise a recirculating dilution stream in fluid communication with a second inlet and a second outlet of the electrochemical water treatment device. | 01-29-2015 |
| 20150376036 | Apparatus and System for Deionization - There is provided a membrane module comprising a membrane package comprising at least two membrane sleeves, wherein the membrane package is configured to allow essentially free flow of a first stream inside the sleeves and essentially free flow of a second stream between each two adjacent sleeves, and a frame, configured to support the membrane package, such that part of each of four surfaces of the membrane package is affixed to predetermined areas in the frame, forming a module having separate spaces configured to facilitate separate flows of the first stream and the second stream through the membrane package. The invention further provides a multi-modular stack, comprising at least two membrane modules and at least one membrane, wherein the first stream is fully enclosed inside each module and the second stream flows through all the modules. | 12-31-2015 |
| 20160002076 | ELECTROCHEMICAL WATER SOFTENING SYSTEM - Systems and methods for treating water are provided. The systems and methods may utilize an electrochemical water treatment device comprising ion exchange membranes. In certain systems and methods, a concentrate stream and a dilution stream may be in fluid communication with ion exchange membranes. The ion exchange membranes may be configured to provide a ratio of a pH of the concentrate stream and a pH of the dilution stream to be less than about 1.0. In some instances, the LSI of the concentrate stream may be less than or about 1.0. In certain instances, the electrochemical water treatment device does not require a reverse polarity cycle. | 01-07-2016 |
| 20160041133 | METHOD FOR REDUCING SUPPRESSOR NOISE - An electrolytic method for suppressing liquid eluent containing previously separated sample analyte anions, counterions to the sample anions, and non-sample anions suppressible to weak acids in an electrolytic device comprising a housing defining at least a sample stream flow channel and an ion receiving flow-through channel separated by an ion exchange bather. The sample stream flow channel includes an upstream channel portion and a downstream channel portion. A first current is applied across the upstream channel portion for substantially completely suppression. A second current is applied across the downstream channel portion at a magnitude of less than 10% of the magnitude of the first current. | 02-11-2016 |
| 20160082395 | Electrolyte-Separating Membrane for Selective Transfer of Cations Through the Membrane and Process for Manufacturing Said Membrane - An electrolyte-separating membrane includes a carrier made of a porous and permeable synthetic thermoplastic material that is larger than 0.8 mm in thickness and an active layer made of a material able to induce insertion and deinsertion reactions for selective transfer of cations through the membrane. The active layer is deposited on the carrier and is hermetic. The material of the active layer may in particular be a molybdenum cluster chalcogenide. The invention aims to provide an electrolyte-separating membrane that is able to transfer cations selectively and that may be manufactured with large dimensions. The invention also relates to a cation transfer method employing this membrane and to a process for manufacturing said membrane, in particular by selective laser sintering of a powdered polymer. | 03-24-2016 |
| 20160146753 | METHOD OF DETECTING AND QUANTIFYING PERCHLORATE CONTAMINATION - A method of detecting and quantifying perchlorate contamination in samples, especially samples with complex background matrices such as food and produce with trace levels of perchlorate. A simple microwave assisted-electromembrane extraction provides simultaneous reduced extraction time, sample clean-up, high recovery and enrichment of perchlorate ions for detection and quantification by ion chromatography. Three parallel EME experiments connected to a single DC power supply improves the precision of the analyses. It also couples well with the multiple microwave digested samples and this reduces the sample preparation time and is hence suitable for routine environmental applications. | 05-26-2016 |
| 20160201163 | METAL ION RECOVERY DEVICE AND METAL ION RECOVERY METHOD | 07-14-2016 |
