Abstract: A combination of acid zirconium phosphate and alkaline hydrous zirconium oxide are utilized as ion-exchange materials, for example, in sorbent dialysis. The combination provides for dialysate regeneration while maintaining constant and controlled levels of Na+, HCO3?, and pH.
Abstract: The invention relates to a filter having a layer which is permeable to a medium to be filtered, comprising at least one nonwoven part, wherein the nonwoven part withstands higher mechanical loads. According to the invention the layer comprises, in addition to the nonwoven part, at least one sheet-like support part connected to at least one sub-region of at least one side of the nonwoven part.
Abstract: Adsorption devices, systems, and methods are provided. In one embodiment, an adsorption device includes a fabric and an adsorbing complex attached at least partially attached to a surface of the fabric, the adsorbing complex being reactive to selectively adsorb a substance from a liquid passing through the fabric to remove at least a portion of the substance from the liquid. In one embodiment, the adsorption device can be incorporated into an extracorporeal blood circuit adapted to filter phosphate from blood of a hemodialysis patient without altering chemistry of the blood.
Type:
Application
Filed:
October 18, 2012
Publication date:
March 21, 2013
Applicants:
NORTH CAROLINA STATE UNIVERSITY, THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL
Inventors:
THE UNIVERSITY OF NORTH CAROLINA AT CH, NORTH CAROLINA STATE UNIVERSITY
Abstract: A method of manufacturing a honeycomb structure comprises a step of forming a molded article by molding a raw material containing a ceramic powder and a pore-forming agent; and a step of manufacturing a honeycomb structure by sintering the molded article, wherein the pore-forming agent is powder formed of a material that disappears at a sintering temperature or less where the molded article is sintered, the powder is obtained by mixing a small particle size powder and a large particle size powder, a median particle size of which a ratio of a cumulative mass with respect to a total mass of the small particle size powder is 50% is 5 to 20 ?m, a median particle size of which a ratio of a cumulative mass with respect to a total mass of the large particle size powder is 50% is 30 ?m or more, and a ninety-percentage particle size of which a ratio of a cumulative mass with respect to a total mass of the large particle size powder is 90% is 80 ?m or less.
Abstract: A liquid fuel strainer assembly includes a filter body of filtration media. The filter body includes a first wall and an opposing second wall shaped to define an enclosed interior space therebetween. A fitting connects the filter body to a fuel pump, and provides fluid communication from the enclosed interior space of the filter body to the fuel pump. A flexible tube is disposed within the enclosed interior space of the filter body. The flexible tube prevents the first wall and the second wall from collapsing toward each other to allow fuel to flow through the enclosed interior space toward the fitting. The flexible tube is not attached to either the fitting or the filter body, and is freely moveable within the enclosed interior space of the filter body.
Abstract: A filtering unit includes alternately arranged membranes and positioning rings. A seal is secured to each of the positioning rings. Each of the positioning rings includes an annular body, arched cutouts defined in an internal edge of the annular body, first and second engaging members formed on the annular body, and at least one slot defined in the annular body. Each of the first engaging members is located near an end of a related one of the arched cutouts. Each of the second engaging members is located near another end of a related one of the arched cutouts. The second engaging members can be engaged with the first engaging members of another positioning ring extending through the arched cutouts. Each of the seals includes two sealing portions extending on two opposite faces of the annular body and at least one connecting portion extending between the sealing portions through the slot.
Type:
Grant
Filed:
June 17, 2010
Date of Patent:
February 5, 2013
Assignee:
New Century Membrane Technology Co., Ltd.
Abstract: A filter device for a motor vehicle has a filter element with a porous ceramic support body provided with one or more passages for receiving a liquid to be filtered and filter membranes formed on inner walls of the passages. The liquid to be filtered passes through the filter membranes into the support body and exits from the support body through a circumferential surface of the support body. At least one compensation element is arranged at an end face of the support body. The compensation element is elastically deformable for providing an additional liquid volume that is generated when the liquid expands due to freezing.
Type:
Grant
Filed:
March 8, 2010
Date of Patent:
January 29, 2013
Assignee:
Mann + Hummel GmbH
Inventors:
Michael Micke, Guenter Jokschas, Martin Weindorf, Dieter Schreckenberger, Elke Duerr
Abstract: A water treatment apparatus comprises a chamber divided by a partition into a treatment section and an outlet section. The treatment section may, for example, contain a filter media including organic material which supports a shrub or tree. Runoff water enters the treatment section over an inlet chamber which forms a bridge over the outlet section. During heavy flow conditions, some of the incoming water overflows inlet bypass weirs to pass directly to the outflow section, bypassing the filter media in the treatment section.
Type:
Application
Filed:
October 27, 2010
Publication date:
January 3, 2013
Applicant:
HYDRO INTERNATIONAL plc
Inventors:
Keith Garry Hutchings, Michael Guy Faram
Abstract: A filter for use with a rain gutter will prevent solid debris, such as leaves, from entering the gutter, but will not unduly restrict passage of rain water into and through the gutter. The filter comprises a liquid permeable strip that can be formed of a material, such as reticulated polyurethane foam. This strip is supported at the top of the gutter by a support member, which can be a thermoformed member, affixed to the underside of the strip. Legs, which can fold transversely to the strip will support the strip above the bottom of the gutter. When the legs are in a flat configuration, multiple filter members can be stacked for storage and shipping. Installation is essentially toolless and the filters can be cut to length.
Type:
Grant
Filed:
February 2, 2010
Date of Patent:
January 1, 2013
Inventors:
Mark Pavlansky, Keith Pavlansky, Stephen Larson Harper
Abstract: A method, and system, to induce remission in diseases characterized by excess production of sTNR and interleukin 2 has been developed. In the most preferred embodiment, the system consists of antibodies to sTNFR1, sTNFR2 and sIL2R immobilized in a column containing a material such as SEPHAROSE™. The patient is connected to a pheresis machine which separates the blood into the plasma and red cells, and the plasma is circulated through the column until the desired reduction in levels of sTNFR1, sTNFR2, and IL2 is achieved, preferably to less than normal levels. In the preferred method, patients are treated three times a week for four weeks. This process can be repeated after a period of time. Clinical studies showed reduction in tumor burden in patients having failed conventional chemotherapy and radiation treatments.
Abstract: A drain screen assembly for protecting a drainage hole or line in an entranceway of a building featuring a generally flat base panel; a plurality of pores disposed in the base panel, the pores allow liquid to pass through the base panel while retaining debris; at least one handle disposed on the base panel; one or more adjustable legs extending downwardly form the bottom surface of the base panel, wherein the adjustable legs can be adjusted in height, wherein at least one side edge of the base panel is free of adjustable legs; and a set of reinforcing ribs disposed under the base panel, the reinforcing ribs help provide structural strength to the base for when an individual walks on the drain screen assembly.
Abstract: An insert mould tool for moulding an annular moulded portion onto an insert such as a filter sheet of a filter cartridge comprises a plurality of mould pieces and means for applying pressure to the mould pieces. Each mould piece comprises complementarily shaped mating surfaces and can be assembled to define an annular mould cavity intersecting at least one mating surface for defining the shape of the moulded portion and an insert-receiving cavity for receiving a portion of the insert. The insert-receiving cavity comprises a sealing portion extending radially inwardly of the annular mould cavity for sealing receipt of a portion of the insert, the sealing portion being exerting a substantially evenly distributed pressure across an area thereof when pressure is applied to the mould pieces. Also disclosed is a method of insert moulding, and a filter cartridge.
Abstract: A liquid filter construction comprising a filter housing is disclosed. The filter housing contains a filter element for filtration of liquids using a urea aqueous solution. A compressible element is positioned within the filter housing, the compressible element comprising an enclosure containing a gas-filled volume. This compressible element compresses in response to the generation of pressure from freezing of liquid within the filtration housing. The compression of the compressible element thereby avoids damage to the filter element, the filter housing, and adjacent equipment.
Type:
Application
Filed:
November 12, 2010
Publication date:
December 13, 2012
Applicant:
DONALDSON COMPANY, INC.
Inventors:
Karim Elayed, Tom Teck, Alain Suttels, Daniel Fertil
Abstract: A filter assembly includes a filtering screen having a top surface and a bottom surface. A skeletal structure is attached to the filtering screen and has a top surface and a bottom surface. The bottom surface of the filtering screen contacts the top surface of the skeletal structure. The skeletal structure forms a plurality of downward extending channels.
Abstract: A liquid separation membrane installation body includes a porous base material, and a liquid separation membrane provided on the porous base material, the liquid separation membrane is a porous membrane formed of a dispersant layered inorganic compound, and a membrane thickness of the liquid separation membrane is 0.1 to 1.5 ?m. The liquid separation membrane is preferably formed of a sheet-like dispersant layered inorganic compound which has a thickness of 0.1 to 100 nm, a major diameter of 0.01 to 5 ?m and an aspect ratio (the major diameter/the thickness) of 3 or more and which is formed into the membrane on the porous base material. There is disclosed the liquid separation membrane installation body capable of increasing a permeation flow rate of a liquid.
Abstract: A stripping basket for use in fly fishing from surf or a jetty having a smooth interior surface free of protrusions and having a converging lower end and adapted to be mounted to one side of an angler below the waistline slightly tilted forward for facilitating line stripping and casting during use.
Abstract: A filtering machine (10) for filtering a condensate which includes entrained oily contaminant, the machine (10) including a filter (14) through which the condensate passes from an inlet (17), to a main filter chamber outlet (24), the filter (14) including an exterior housing (15) through which the condensate, in use, passes into a filter interior, and through which filtrate, in use, passes from the filter interior, and the filter interior including a mass of filter material which includes silica-based oleophillic fibres (29).
Abstract: A method and apparatus for supporting a screen. The apparatus comprising a cylindrical screen for submerging in a fluid, the screen having an inlet pipe for connecting to a piping system, filter members, a first end, a second and a support structure. The support structure is one or more helical members which traverse the screen.
Type:
Grant
Filed:
May 31, 2011
Date of Patent:
October 23, 2012
Assignee:
Weatherford/Lamb, Inc.
Inventors:
Jay R. Osborne, Michael Ekholm, Dan Ganfield
Abstract: According to example embodiments, a separation membrane includes a graphene on at least one surface of a polymer support. The graphene may include a plurality of grains defined by grain boundaries.
Type:
Application
Filed:
April 10, 2012
Publication date:
October 11, 2012
Applicants:
Industry-University Cooperation Foundation Hanyang University, SAMSUNG ELECTRONICS CO., LTD.
Abstract: A polyamide membrane comprising reaction product of an anhydrous solution comprising an anhydrous solvent, at least one polyfunctional secondary amine and a pre-polymer deposition catalyst; and an anhydrous, organic solvent solution comprising a polyfunctional aromatic amine-reactive reactant comprising one ring. A composite semipermeable membrane comprising the polyamide membrane on a porous support. A method of making a composite semipermeable membrane by coating a porous support with an anhydrous solution comprising an anhydrous solvent, a polyfunctional secondary amine and a pre-polymer deposition catalyst, to form an activated pre-polymer layer on the porous support and contacting the activated pre-polymer layer with an anhydrous, organic solvent solution comprising a polyfunctional amine-reactive reactant to interfacially condense the amine-reactive reactant with the polyfunctional secondary amine, thereby forming a cross-linked, interfacial polyamide layer on the porous support.
Abstract: Disclosed are filter media constituents, filter media, filter constructions, and methods of employing the filter media and filter constructions for fluid filtration. The filter media and filter media constituents of the invention have unique properties enabling the efficient capture of microbes or microbial generating units. Fluids usefully filtered using the filter media and filter constructions include air and water.
Type:
Application
Filed:
March 23, 2012
Publication date:
September 27, 2012
Applicant:
RECEPTORS LLC
Inventors:
Robert E. Carlson, Karen Schlichtmann Schmidt, Robert M. Carlson
Abstract: Filter element (1) has opposing end sections (3A, 3B) of a filter material sheet (2) that are connected to each other in a fluid-tight manner, wherein a molded or extruded plastic casing (5) encloses the end edges (4A, 4B) of the end sections (3A, 3B). A method for producing a corresponding filter element (1) includes the encasing of opposing end edges (4A, 4B) of end sections (3A, 3B) of a filter material sheet (2) with a plastic casing (5) so as to form a continuous bellows.
Abstract: A filter device may include a ring filter element arranged in a filter housing in an upright manner. The ring filter element may have an upper end disc and a lower end disc. A dirt pot may have a water separator arranged therein and be provided on the lower end disc. The dirt pot may also have a protruding pin. A channel may be configured to receive the pin and be provided on at least one of a filter housing pot and a functional element. The filter device may be operational when the pin engages into the channel.
Abstract: Some embodiments of the invention provide an asymmetric activated carbon block comprising at least a first element and a second element. In some embodiments, the first element can comprise at least two constituents and the second element can comprise at least two constituents. In some embodiments, at least a portion of the first element can be positioned within the second element and at least one of the at least two constituents of the first element can differ from at least one of the at least two constituents of the second element. In some embodiments, the first element and the second element can be asymmetric with respect to a structural property. Some embodiments include part of the first element being located immediately adjacent the second element.
Abstract: Nozzle device and nozzle for atomisation and/or filtration as well as methods for using the same. The present invention relates to a nozzle and nozzle device for atomisation, in particular a micro-machined reinforced nozzle plate, that may produce small liquid droplets in air (spray) or into a liquid (emulsion) with a narrow droplet size distribution and to make small air bubbles into a liquid (foam) and to methods of making the same. The invention is further related to a nozzle part for filtration as well as means and methods to facilitate atomisation and filtration.
Type:
Application
Filed:
April 16, 2012
Publication date:
September 13, 2012
Applicant:
MEDSPRAY XMEMS B.V.
Inventors:
Cornelis Johannes Maria VAN RIJN, Jeroen Mathijn Wissink, Wietze Nijdam
Abstract: A container for facilitating solid phase-liquid phase separation has all corrosive resistant materials on the liquid-contacting surfaces. A center wall of polyethylene is provided to increase the surface area available for separation. Support structure for the filter medium includes either a poly grate or a poly cuspated plastic or a combination thereof. Poly connectors and drain lines complete the structure ensuring that the container has high durability and will provide a long, corrosion-free life. A specially formulated highly lubricious material (high molecular weight polyethylene) is utilized for the poly walls to enable rapid clean out of the container.
Type:
Grant
Filed:
February 3, 2010
Date of Patent:
September 11, 2012
Inventors:
James Robert Powell, Corey L. Sechler, Matthew B Wilson, Dale W. Deist
Abstract: A notched wire 4 that is disposed in layers in a filtration apparatus. First projection stripes 4d are formed on the top surface 4b of a base 4a at prescribed intervals in the longitudinal direction of the base 4a so as to extend in the width direction of the base 4a. Second projection stripes 4e are formed approximately at the centers of the first projection stripe 4d so as to extend between the first projection stripes 4d•4d. The second projection stripes 4e are projection stripes having an approximately semicircular cross section, for example. The second projection stripes 4e is smaller in height than the first projection stripes 4d, and the width of the second projection stripes 4e is shorter than the length of the first projection stripes 4d.
Abstract: The present invention contemplates various devices that are configured to separate a sample, which contains more than one unique species, into any desired number of sub-samples by passing the sample across a like number of separation media configured for a first separation protocol. Each of the sub-samples may be further separated by an additional separation protocol, thereby creating a plurality of mini-samples, each of which may be further separated and/or analyzed. The invention also contemplates using a simple method of using conduits to form a fluid path that passes through a plurality of separation media, each of which media is configured to isolate a particular sub-sample. After various sub-samples of the sample are isolated by the various separation media, the conduits may be removed, thereby enabling each of the isolated sub-samples to be further separated and/or analyzed independent of any other sub-sample.
Type:
Grant
Filed:
January 19, 2006
Date of Patent:
August 21, 2012
Assignee:
Bio-Rad Laboratories, Inc.
Inventors:
Lee O. Lomas, Jian Ding, Egisto Boschetti
Abstract: A filter media is disclosed comprising a carrier and a web collected on the carrier. The web comprises hydrophilic polymeric meltblown fibers and a plurality of sorbent particles enmeshed in the hydrophilic polymeric meltblown fibers. The carrier comprises a porous sheet and has a carrier basis weight. The web has a web basis weight. The hydrophilic polymeric melt-blown fibers comprise at least 3% of the web basis weight and the plurality of sorbent particles comprise at most 97% of the web basis weight.
Type:
Application
Filed:
April 7, 2010
Publication date:
August 2, 2012
Inventors:
Scot G. Wolf, William J. Feil, III, Bradley W. Eaton, Stephen Sanocki, Andrew R. Fox
Abstract: It is an object of the present invention to provide a novel sterilization method capable of killing not only microorganisms in water, but also microorganisms in a gas. Specifically, the present invention provide a method for sterilizing a gas or liquid, comprising contacting a microorganism in a gas or liquid with a material containing an amorphous carbon having a sulfo group introduced therein.
Abstract: An apparatus, system, and method for removing sediment from water is disclosed. According to one embodiment of the present invention, the apparatus includes a tubular filter assembly comprising a support member; and a filtratable element surrounding the support member, the filtratable element comprising a backing mesh; and a fibrous batting. A system for removing sediment from water is disclosed. According to one embodiment, the system includes a filter chamber to receive a liquid having suspended particles therein; at least one filtration cartridge housed within the filter chamber, wherein the filtration cartridge comprises at least one elongated filtratable element, each filtratable element comprising a support member, and a filtratable media adapted to surround the inner core. A method for removing sediment from water is disclosed.
Type:
Grant
Filed:
August 15, 2007
Date of Patent:
July 17, 2012
Assignee:
Monteco Ltd.
Inventors:
Christopher Adam Murray, Darren Francis Kevin Lawless
Abstract: A rain gutter filter apparatus and method utilize a filter element of a reticulated foam material adapted for insertion into a gutter having an open top defining a top width of the gutter. The filter element has a flat top surface with a width substantially matching the top width of the gutter, a bottom surface having a width less than the top width of the filter element, and front and rear surfaces extending upward from the bottom surface of the filter element to thereby form a front and a rear open passage for water on front and rear sides of the bottom surface of the filter element when the filter element is installed into the gutter. The reticulated foam material of the filter element has a composition that is flame resistant, germicidal, mold resistant, and resistant to degradation by exposure to ultraviolet rays.
Abstract: Devices for concentrating fluids that comprise discrete or particulate material dispersed in a liquid medium, such as whole blood, by removal of a proportion of the liquid medium, and a method of producing blood cell concentrates from whole blood using reduced pressure. The devices comprise an outer bag formed of an impermeable material and an inner bag formed of a permeable material, the inner bag containing an absorbent material or being adapted for connection to a source of reduced pressure.
Abstract: A filter and methods of use to provide distal protection during a vascular procedure is provided. The filter includes a first spiral shaped support member joined to a second spiral support member to form a crossover and to form a first generally planar support frame and a second generally planar support frame. A tether is on one of the first end or the second end and a capture structure is attached to the first support frame or the second support frame. The capture structure extends in a non-planar fashion relative to the generally planar first or second support frame to which the capture structure is attached. After use to capture debris, the filter is recovered in a manner to close while maintaining captured debris within the filter.
Type:
Application
Filed:
March 22, 2012
Publication date:
July 12, 2012
Inventors:
Eric Johnson, Thomas Fogarty, Frank Arko, Jeff Elkins, Martin Seery
Abstract: A filter module is formed of wound filter material having openings wherein the boundary surfaces of the openings constitute flow-through surfaces. The openings of the wound layers of the filter material form channels angled relative to the winding axis, wherein one group thereof opens at the outer peripheral surface of the roll and the other group opens at the inner peripheral surface of the roll and wherein the channels on the other end, respectively, are closed and wherein the channels, angled relative to the winding axis, are separated from one another by filter material, and wherein the inner area of the roll has a central channel arranged around a winding axis.
Abstract: A dialysis system includes a first fluid heater, a second fluid heater, a supplemental power source and a logic implementer. The logic implementer is configured to use the supplemental power source such that when the first and second heaters are powered simultaneously, a collective current draw does not exceed a maximum allowable current draw of a branch power source powering the system.
Type:
Grant
Filed:
February 18, 2011
Date of Patent:
July 10, 2012
Assignees:
Baxter International Inc., Baxter Healthcare S.A.
Abstract: A membrane treatment apparatus includes a filtration membrane 10 filtering raw water existing in an external environment 100 by applying pressure thereto and a treated water outlet 11 from which treated water collected after filtration by the filtration membrane 10 is taken, and is provided with a filter cloth 12 placed and fixed outside the filtration membrane 10 with a predetermined space left between the filter cloth and the filtration membrane. Preferably, the filter cloth 12 is provided in such a way as to cover an outer circumferential side and a bottom of the filtration membrane 10, and the filter cloth 12 is provided in such a way as to cover the outer circumferential side of the filtration membrane 10 with the bottom thereof uncovered.
Abstract: Aspects of the present disclosure provide composite carbon blocks with improved capacity for the removal of contaminants such as THMs (trihalomethanes) and trace VOCs (volatile organic compounds) found in water. In one aspect, a filtration matrix comprises a polymeric binder and an adsorptive media comprising activated carbon having a bulk density of 0.54 (0.57, or even 0.60) g/cc or greater. The carbon BET surface area can be 1100 (950, or even 550) m2/g or less. The polymeric binder can be ultra high molecular weight polyethylene. Also provided are methods of making filtration matrixes.
Type:
Grant
Filed:
March 22, 2007
Date of Patent:
June 26, 2012
Assignee:
3M Innovative Properties Company
Inventors:
Mark R. Stouffer, Richard A. Prince, Robert E. Astle, William J. Feil, III
Abstract: The invention relates to a fluid filtering device comprising a filter (2) for filtering a fluid and a substrate (3) comprising a collecting structure (4) for collecting the filtered fluid from the filter (2). An adhesive (5) holds the filter (2) in place with respect to the collecting structure (4). The filter (2), the substrate (3) with the collecting structure (4) and the adhesive (5) are arranged such that the collecting structure (4) contacts the filter (2) and the filter (2) is attached to the substrate (3) by the adhesive (5). The collecting structure is very close to the filter and the adhesive ensures that the collecting structure remains very close to the filter. The filtered fluid can therefore be collected very efficiently and very fast. The fluid filtering device is preferentially used for filtering blood in a biosensing device.
Type:
Application
Filed:
August 25, 2010
Publication date:
June 21, 2012
Applicant:
KONINKLIJKE PHILIPS ELECTRONICS N.V.
Inventors:
Reinhold Wimberger-Friedl, Jacobus Hermanus Maria Neijzen, Joost Hubert Maas
Abstract: A liquid membrane matrix is disclosed in the form of an aquaporin containing bulk liquid membrane matrix (BLM), wherein said liquid membrane matrix is formed from a solution of an amphiphilic copolymer detergent wherein transmembrane proteins have been functionally incorporated and wherein said matrix further contains a stabilising oil phase. The uses of the membrane matrix include water extraction from liquid aqueous media by forward osmosis, e.g. for desalination of salt water.
Type:
Application
Filed:
September 28, 2011
Publication date:
June 21, 2012
Applicant:
Aquaporin A/S
Inventors:
Thomas Vissing, Jesper Søndergaard Hansen
Abstract: The present disclosure relates to a matrix comprising a modified sulfonamide polymer, processes for producing the same and uses thereof. In particular, the matrix comprises sulfonyl compound residues and aliphatic amine compound residues, and further comprises acyl compound residues and amine compound residues having at least two amine moieties, wherein the aliphatic amine compound residues and amine compound residues are different.
Abstract: Fine fiber products including fiber webs, as well as related assemblies, systems and methods, are described. In some embodiments, fiber webs described herein may include fine fibers and relatively low amounts of degraded polymer formed during a fiber extrusion process. The fiber webs may be used for filter media applications.
Type:
Application
Filed:
December 17, 2010
Publication date:
June 21, 2012
Applicant:
Hollingsworth & Vose Company
Inventors:
Stephen T. Cox, William S. Freeman, Mark S. Millar
Abstract: The present invention includes a harvesting and irrigation device, a method and a kit for the collection of viable fat cells and/or adipose tissue with decreased handing and improved yield and viability.
Abstract: A liquid filter assembly is provided. The assembly includes a liquid filter cartridge and a housing. The liquid filter cartridge, includes, among other things, first and second, opposite, end caps each having a central aperture therethrough. A seal arrangement including a radially directed seal is mounted on a seal support of the first end cap that projects away from the second end cap. The cartridge includes a seal mount configured to define a seal plane non-orthogonal to a central axis of the cartridge. The housing includes a filter head and a housing sidewall. The filter head includes a filter head having a body, a top cover and a bottom aperture opposite the top cover. The housing extends through the bottom aperture. The cartridge as described is installed in the housing, with an end cap radially sealed against a tube in a bottom of the housing.
Abstract: Water permeable membranes and methods of forming water permeable membranes are provided. The water permeable membranes are comprised of a cross-linked polyamide containing at least one bifunctional additive that is hydrophilic and reactive. Additionally, in accordance with other embodiments of this invention, methods of forming water permeable membranes comprised of a cross-linked polyamide containing at least one bifunctional additive that is hydrophilic and reactive are provided. Specifically, the water permeable membranes may comprise a membrane formed from a cross-linked aromatic or aromatic/aliphatic polyamide interfacially polymerized on a porous support. The presence of the at least one hydrophilic and reactive additive improves the flux and salt retention properties of the membrane in comparison to a membrane formed without the at least one hydrophilic and reactive additive.
Type:
Grant
Filed:
July 17, 2008
Date of Patent:
June 12, 2012
Assignee:
The Ohio States University Research Foundation
Abstract: The present invention provides molded activated carbon, and the molded activated carbon is produced by molding a mixture containing powdery activated carbon (a) having a median particle size of 80 ?m to 120 ?m and a standard deviation ?g of 1.3 to 1.9 in a particle size distribution and a fibrous binder (b). The molded activated carbon of the present invention has excellent removability for free residual chlorine, volatile organic compounds, CAT, and 2-MIB and excellent turbidity filterability, and is for use as a water purifier cartridge or the like.
Abstract: Organosilicate compositions of variable charges, hydrophobicity, and porosity, and in particular organosilicate-based molecular filtration devices are disclosed.
Type:
Application
Filed:
June 24, 2011
Publication date:
May 17, 2012
Applicant:
SOUTHERN ILLINOIS UNIVERSITY CARBONDALE
Abstract: Disclosed is a fuel filter in which is disposed in a fuel suction port of a fuel tank or in a fuel line and used to filter the fuel. At least one of filter materials constituting the fuel filter is made into a multifunctional filter material having a function of trapping dust of different particle diameters in stages, by differing the diameter of the pores in the filter material from the primary side to the secondary side of the filter material so that the size of the pores decreases toward the secondary side.
Abstract: A method for producing a carbon membrane of the present invention is a production method where a carbon membrane obtained by subjecting a carbon-containing layer to thermal decomposition in an oxygen inert atmosphere while sending a gas mixture containing an oxidizing gas thereinto is thermally heated. The carbon membrane is subjected to a heating oxidation treatment with controlling the ratio of the flow rate of the gas mixture to the areas of the carbon membrane to 0.5 cm/min. or more to control (temperature ° C.)2×time (h)/10000, which is the relation between the temperature of the gas mixture and the flow time, to 9 to 32. This enables to obtain a carbon film which selectively separates alcohols having 2 or less carbon atoms from a liquid mixture of the alcohols having 2 or less carbon atoms and organic compounds having 5 to 9 carbon atoms.