Abstract: Described herein is a polyamide hollow fiber membrane and methods of making and using the hollow fiber membrane. The polyamide hollow fiber membrane has an isopropanol permeability of from about 5 L/m2 h bar to about 150 L/m2 h bar and a particle rejection percentage of about 100% for particles having a nominal diameter of from about 1 nm to about 25 nm. The polyamide hollow fiber membranes described herein are particularly useful for photoresist filtration, for example.

Abstract: A dialyzer for an extracorporeal blood treatment includes an elongated, preferably cylindrical dialyzer housing, and at least one dialysis membrane that separates an internal space of the dialyzer housing into a dialysis liquid chamber and a blood chamber. The dialysis liquid chamber has a dialysis liquid supply port and a dialysis liquid discharge port. The blood chamber has a blood supply port and a blood discharge port. The dialyzer includes an additional ventilation outlet for ventilating the blood chamber. The additional ventilation outlet is located with respect to a blood flow direction in the blood discharge port between an exit area of the blood discharge port and the dialysis liquid supply port. A corresponding dialysis device includes a ventilation outlet on a dialyzer housing or on a hose connected to a blood discharge port.

Abstract: The present invention provides, in various embodiments, hybrid single-pass tangential flow filtration assemblies, disposable single-pass tangential flow filtration assemblies, scalable single-pass tangential flow filtration assemblies and adaptable modular single-pass tangential flow filtration assemblies. In other embodiments, the invention relates to processes for recovering proteins from the surface of a filtration membrane in a single-pass tangential flow filtration assembly and for cleaning a tangential flow filtration assembly. In additional embodiments, the invention provides methods of increasing the processing capacity of a single-pass tangential flow filtration assembly.

Abstract: A reverse osmosis filtering module includes: a purified water discharge pipe in which a purified water discharge path is formed, and which has a communication hole that is formed on an outer periphery thereof and communicates with the purified water discharge path; a reverse osmosis filtering part including a reverse osmosis filtering member in which a purified water flow space is formed, and which is wound around the purified water discharge pipe such that the purified water flow space communicates with the communication hole; a first flow channel formation cap provided at one side and having an inlet hole; and a second flow channel formation cap provided at the other side of the reverse osmosis filtering part and having an outlet hole.

Abstract: An apparatus for hydrolysing a product, comprising a continuous conduit having an inlet for receiving the product and an outlet for discharging the product, the conduit being formed so as to follow a path that winds around a longitudinal axis as the conduit extends parallel to the longitudinal axis between the inlet and the outlet, and a heating system for heating at least part of the conduit. The conduit is rotatable about the longitudinal axis so as to transport product received in the inlet towards the outlet.

Abstract: A composite filter-cartridge, a composite filter-cartridge assembly for a water purifier and a water purifier are provided. The composite filter-cartridge includes a pretreatment filter-cartridge, a fine filtration filter-cartridge and an activated carbon filter-cartridge arranged sequentially from outside to inside. The fine filtration filter-cartridge includes a first water collecting pipe and a fine filtration membrane. The activated carbon filter-cartridge includes: a second water collecting pipe, an outer circumferential wall of the second water collecting pipe except a lower end thereof and an inner circumferential wall of the first water collecting pipe being spaced apart from each other; and a activated carbon, lower ends of the activated carbon and the second water collecting pipe being in sealed connection, a water outlet hole being formed in the activated carbon and penetrating the activated carbon axially, and an upper end of the water outlet hole being closed.

Abstract: A process for producing nitrogen-rich air by feeding high temperature air at 150° C. or more to an air separation membrane module is described. After being placed at 175° C. for two hours, the air separation module exhibits a shape-retention ratio of 95% or more in one embodiment. The nitrogen-rich air can be fed to a fuel tank for an aircraft, for example.

Abstract: The invention relates to a monolithic tangential flow separator element for separating a fluid medium for treatment, the element comprising a rectilinear rigid porous support (2) of three-dimensional structure having formed therein at least one channel (3) for passing a flow of the fluid medium for treatment in order to recover a filtrate at the peripheral surface of the support. The monolithic rigid porous support (2) includes obstacles (9) to the flow of the fluid for filtering on or in the inside wall(s)) of the channel(s), the obstacles presenting identity of material and of porous texture with the support, and also presenting continuity of material and of porous texture with the support.

Abstract: A hollow fiber membrane is formed by embedding a braid having a spiral open weave of monofilaments only, to avoid a “whiskering” problem. The open weave is characterized by contiguous, circumferential, rhomboid-shaped areas of polymer film separated by monofilament. When the braid is supported on a plasticized PVA cable having a scalloped periphery, the braid can be infiltrated with membrane polymer which, when coagulated, embeds the braid positioning it around the lumen. The embedded spiral weave, free of any circumferentially constricting monofilament, allows the membrane to be biaxially distensible. The membrane has “give” not only in the axial or longitudinal direction but also in the radial direction. “Give” in the radial direction permits soiled membranes to be backwashed under higher pressure than in a comparable braid which is not radially distensible.

Abstract: A field water purification system filter is described. The filter includes a water tight enclosure formed between two layers of a polymeric material, an inlet and an outlet are coupled to the water tight enclosure. A filter envelope including a quantity of filter media is inside the water tight enclosure. The water filter having a minimal thickness when not filled with water. The filter envelope is formed by a first set of bonded segments of the two layers of polymeric material. The filter can also include an outer channel having a first side formed by the water tight enclosure and a second side opposite from the first side. The second side can include a second set of bonded segments of the two layers of polymeric material interspersed with a set of nonbonded segments, the nonbonded segments defining openings in an intermittent barrier between the outer channel and the filter media.

Abstract: A vertical pressurized immersion membrane filtration system includes at least one pressure vessel/tank and at least one layer of membrane modules sealed therein. Every layer has at least two parallel membrane modules, with space left between the membrane module and the pressure vessel/tank. The upper and lower ends of every membrane module have plates and the upper and lower membrane modules are hermetically connected. The plates separate the space in the pressure vessel/tank into two sealed end compartments and a middle compartment. The membrane module includes interior membrane fibers and an outer perforated supporting cylinder surrounding the membrane fibers. The pressure vessel/tank has end and middle water inlets/outlets. The pressure vessel/tanks are parallel. The multiple membrane modules work simultaneously, effectively increasing filtration efficiency. The filtration system can work in multiple operation modes, improving applicability thereof.

Abstract: Disclosed are a hollow fiber membrane module, a filtration apparatus based on the same, and a method for manufacturing the filtration apparatus. The hollow fiber membrane module includes two headers respectively provided with a permeate collecting unit therein, wherein each of the headers has grooves on its two sides, the grooves being extended in a length direction of the hollow fiber membrane. Since one slide rod can simultaneously be inserted into grooves of two adjacent hollow fiber membrane modules, the hollow fiber membrane modules can mutually serve as guides for insertion/ejection thereof. Also, since the grooves formed on the header can serve as insertion holes into which a clamp is inserted, the clamp can be used for coupling between the hollow fiber membrane module and another element and reinforcement of the coupling.

Abstract: The invention provides, in various embodiments, systems and devices relating to a blood product heater for use in an ex-vivo organ care. In certain embodiments, the invention relates to maintaining a perfusion fluid flowing through the heater at near-physiologic conditions.

Abstract: A faucet with built-in filter units includes a plurality of filter units arranged inside a main body of the faucet and also includes a dirt discharge valve so that the present invention requires no addition of external filters attached to the main body and enables automatic washing of hollow fiber membrane type filter units arranged therein so as to improve drinking water hygiene and extend lifespan of the filters.

Abstract: The present relates to a molecular exchange device. In particular, the present invention relates to a molecular exchange device comprising an outer tube extending from an approximal end to a distal end of the device; an inner tube defining at least one fluid passageway, the inner tube positioned concentrically within the outer tube and the area between the inner and the outer tube defining at least one fluid passageway; and a projection positioned within the area between the inner and the outer tube, wherein the projection prevents displacement of the inner tube with respect to the outer tube.

Abstract: Disclosed herein are systems and methods for desalination of salt water based on an engineered acoustic field that causes constructive and destructive interference at pre-computed spatial positions. The engineered acoustic field can cause high-pressure and low-pressure regions where desalination membranes are located. The induced pressure from the acoustic field can force pure water through the membranes leaving ionic and dissolved molecular species behind.

Abstract: A fluid treatment system for treating feed water includes a first tubular member having first and second ends, at least one second tubular member having first and second ends, a pump positioned within the first tubular member, a filtering membrane positioned within the second tubular member, a first end cap for receiving the first ends of the first and second tubular members, and a second end cap for receiving the second ends of the first and second tubular members.

Abstract: Device (5) for filtering blood including a filter unit (7) having a blood filter, an inlet (8) for blood to be filtered and being connectable to an artery of a patient and a blood outlet (9) for filtered blood and being connectable to a vein of the patient, and having a filtrate container (6,14), that encloses the filter unit (7), for receiving filtrate (12) passing through the blood filter during a filtering process and that the filtrate container (6,14) is a closed container, which in a filled state is arranged to establish a counter-pressure over the blood filter, whereby the filtering process is interrupted. The invention also concerns a system including the above device.

Abstract: Molecular filters are disclosed herein. An example of the molecular filter includes a rolled substrate having an interior surface and opposed ends that are substantially orthogonal to the interior surface. The rolled substrate defines a layer and a fluid flow path extending from one of the opposed ends to another of the opposed ends. A template is positioned on the interior surface of the rolled substrate. The template includes a matrix, and molecule template locations formed in the matrix.

Abstract: The invention concerns a centrifugal filtering device for filtering a fluid. The device comprises a rotatable inner casing forming an inner space and a rotatable outer casing forming an outer space. The device further comprises a fluid inlet, at least one filter and drive means. The drive means is configured to rotate the inner casing to create a centrifugal pressure. The pressure forces a part of the fluid contained in the inner space through the filter and to a radially outer position of the outer space. The filtered fluid forms a filtrate, the filtrate having a kinetic energy. The outer casing is configured to transport the filtrate from the radially outer position to a radially inner position of the outer space, permitting transfer of the kinetic energy from the filtrate to the outer casing, thereby permitting regaining of mechanical energy.

Abstract: The present invention relates to an air cleaner for removing air pollutants from an air stream, for instance such as the cleaning exhaust/intake gas of an amusement machine, said air cleaner comprising a filter device including at least one filter layer (4a, 4b) held by a filter holder (5) in said airflow substantially perpendicular to a main flow direction thereof and including a plurality of preferably stick-shaped filter elements (6) neighboring each other. In accordance with the present invention, the filter device has no closed surrounding along the circumference of the filter layers, but provides for an open side along at least a portion of the periphery of the filter layer. At least one circumferential side section (7, 8) of the filter layer parallel to or tangential to the longitudinal axis of an outermost filter element is formed as an open side free of flow control elements surrounding the filter layer.

Abstract: A system is provided that includes one or more acoustic microfilters through which is flowed a mixture of a fluid and a particulate to selectively filter particles from the fluid. Also included are one or more phononic crystal units coupled to the acoustic microfilter(s) to further selectively filter particles from the fluid. Related apparatus, systems, techniques and articles are also described.

Abstract: A carbon membrane structure includes: a cylindrical porous support body provided with a plurality of cells extending from one end face to the other end face and functioning as fluid passages, and a carbon membrane disposed on the surface side of the cells formed in the porous support body. The plurality of cells are formed so that a distance from one cell to another cell adjacent to the one cell in a cross section perpendicular to a cell extension direction of the porous support body 1 is 0.60 mm or more. The carbon membrane structure shows very excellent separation performance by the carbon membrane.

Abstract: The present invention relates to high cut-off hemodialysis membranes for the treatment of chronic hemodialysis (CHD) patients, with the potential to improve long-term survival of these patients by reducing the risk of cardiovascular disease, through down-regulation of monocyte activation in the blood. Monocytes are the major circulating blood cells involved in the progression of cardiovascular disease. High cut-off hemodialysis in chronic dialysis patients results in a sustained decrease in expression of monocyte cell-surface proteins that direct the movement of these cells from the blood to the walls of blood vessels, where they promote the progression of arterial disease (atherosclerosis) that leads to cardiovascular disease (CVD); heart disease, strokes and peripheral vascular disease.

Abstract: A paracorporeal respiratory assist lung is configured with an annular cylindrical hollow fiber membrane (fiber bundle) that is rotated at rapidly varying speeds. Fluid (for example, blood) is introduced to the center of the device and is passed radially through the fiber bundle. The bundle is rotated at rapidly changing velocities with a rotational actuator (for example, a motor or magnetic coupling). The rotation of the fiber bundle provides centrifugal kinetic energy to the fluid giving the device pumping capabilities and may create Taylor vortexes to increase mass transfer. Rotation of the fiber bundle increases the relative velocity between the fluid and the hollow fibers and increases the mass transfer. The porosity of the fiber bundle may be varied to enhance gas exchange with the blood. Alternatively, a rotating core may be used with a stationary fiber bundle.

Abstract: A hollow fiber membrane module and a puller used therefore is disclosed, wherein each individual hollow fiber membrane module can be easily pulled out from a filtering apparatus provided with a plurality of hollow fiber membrane modules if it is required to be replaced or repaired. At this time, the hollow fiber membrane module comprises a hollow fiber membrane; and at least one header to which the hollow fiber membrane is potted, wherein the header includes a first lateral side to which the hollow fiber membrane is potted and a second lateral side opposite to the first lateral side, and wherein an engaging plate is formed at the second lateral side. Also, the puller comprises a main body; and a hooking member, extending from an end of the main body, formed in a shape suitable for being caught in the engaging plate.

Abstract: Device (5) for filtering blood including a filter unit (7) having a blood filter, an inlet (8) for blood to be filtered and being connectable to an artery of a patient and a blood outlet (9) for filtered blood and being connectable to a vein of the patient, and having a filtrate container (6,14), that encloses the filter unit (7), for receiving filtrate (12) passing through the blood filter during a filtering process and that the filtrate container (6,14) is a closed container, which in a filled state is arranged to establish a counter-pressure over the blood filter, whereby the filtering process is interrupted. The invention also concerns a system including the above device.

Abstract: A process that can alleviate the internal concentration polarization and can enhance membrane performance of a forward osmosis system includes the steps of passing a fluid in a forward osmosis system from a feed solution with a first osmotic pressure, through a membrane into a draw solution comprising a draw solute with a second osmotic pressure, where the first osmotic pressure is lower than the second osmotic pressure, the membrane includes an active layer and a support layer, and the membrane is oriented such that the active layer of the membrane faces a draw side, and the support layer faces a feed side; and applying an external force to the fluid on the feed side of the membrane.

Abstract: The specification discloses a portable dialysis machine having a detachable controller unit and base unit. The controller unit includes a door having an interior face, a housing with a panel, where the housing and panel define a recessed region configured to receive the interior face of the door, and a manifold receiver fixedly attached to the panel. The manifold includes diaphragms adapted to minimize the dead space between the dialysis machine pins and improve responsivity. The base unit has a planar surface for receiving a container of fluid, a scale integrated with the planar surface and a heater in thermal communication with the container. Embodiments of the disclosed portable dialysis system have improved structural and functional features, including improved modularity, ease of use, and safety features.

Abstract: A tunable membrane configuration for a filtration or selective fluidic isolation and recovery device includes a housing having an inlet at one end and an outlet at an opposite end with an opening extending from the inlet to the outlet. An internal support structure is maintained in the opening, and layered filtration media is carried by the internal support structure, the media separating feedwater received at the inlet into at least three separate output flows.

Abstract: A method comprising providing a power train comprising a plurality of cells, each cell forming a hydraulic loop; producing a power train cycle comprising a controlled concentration-pressure loop wherein the concentration field: (a) osmotically induces a continuous and constant flow rate of substantially salt-free permeate flux throughout the power train; (b) maintains a salt concentration difference across the semipermeable membrane shared by the adjacent cells in the plurality of cells; (c) defines a salt concentration ratio within each cell that ensures a net positive power generation; and, (d) discharges the concentrated brine at the opposing end cell; and operating the power train under conditions effective to generate net positive power at an efficiency of 35% or more.

Abstract: A pressurised filtration vessel, for example in cylindrical form, may include a filter element comprising a plurality of filtration membrane modules, e.g., ultrafiltration membrane modules; a distributor connected to an inlet for distributing an input fluid to the filter element; and a collector connected to an outlet for collecting an output fluid from the filter element. The filter element may be located between the distributor and the collector.

Abstract: A serviceable device for filtering lubricating oil includes an inlet and an outlet, a first filtering element and an absorption filtering element. The absorption filtering element is configured to absorb a fluidic contaminant present in the lubricating oil when in contact with the absorption filtering element. A flow path for the lubricating oil is from the inlet, through the first filtering element, and out the outlet. The flow path further includes lubricating oil contact with the absorption filtering element.

Abstract: A tubular membrane module and its method of manufacture are disclosed wherein tubular membranes form an interference self-sealing fit with hard tube sheets with the aid of a hard hollow mandrel inserted at the end of the tubular membranes. The tubular membranes are comprised of porous, compressible PTFE and/or fluorocopolymers. The self-sealing method described herein requires no heat treatment, allows for ease of manufacture without destruction of the tubular membranes and without the processing complexity of utilizing any additional potting agent, extrusion, or chemical cross-linking of any polymeric adhesives. The self sealing PTFE tubular membranes have superb chemical resistance and temperature resistance, and through the benefits of this invention, offer higher pull-out resistance than typically observed with potting materials such as polyurethane and epoxy.

Abstract: A filtration device having a tubular pressure vessel and a tubular filter assembly is provided. The tubular filter assembly is housed within the tubular pressure vessel and includes a filter element and a split ring seal circumscribing the filter element. The split ring seal has an annular body that includes a first end, a second end opposite the first end and slidably engaged with the first end, and an opening extending through the annular body.

Abstract: A device for filtering and separating flowing media by means of membranes, in particular by the method of ultrafiltration, reverse osmosis and nanofiltration includes a housing in which the membranes are disposed, an inlet for the flowing medium that is carried in the device and is to be separated, and one outlet for carrying out the permeate produced in the device and one outlet for the retentate leaving the device, which substantially forms a separation unit. The device furthermore includes a container in which at least two separation units are received, connected to one another in such a way that for the delivery of the flowing medium to be separated to the at least two separation units, a common inlet is provided.

Abstract: A center tube is disclosed which allows a draw solution to flow through all membrane elements in a membrane system in parallel. The center tube may include a cylindrical wall with two open ends and a barrier element there between separating an upstream chamber and a downstream chamber within the cylindrical wall. At least one non-perforated bypass tube may be located substantially within the cylindrical wall, which extends a length of the downstream chamber and/or the upstream chamber so that the upstream chamber is configured to communicate with a second upstream chamber of a second center tube and/or the downstream chamber is configured to communicate with a second downstream chamber of the second center tube.

Abstract: A filtration apparatus including an annular filter surrounding a waste treatment chamber, a first turbine drawing liquid up within the chamber and a second turbine driving liquid outwardly through the filter. In the method of treating organic waste, the chamber includes an ultraviolet lamp and a cylindrical baffle surrounding the chamber having a mirrored surface. The disclosed apparatus further includes anodic and cathodic plates surrounding the filter.

Abstract: A system, method and device are disclosed for bio-processing a feed stream and providing a constant output by operating a continuous single-pass tangential-flow process. The single-pass process provides high conversion concentration while operating at relatively low feed flow rates, and the process can also be used to provide constant output diafiltration.

Abstract: In the present invention, dialysis tubing is placed in a chamber, where an ultrasonic or a other mist producer is present. The ultrasonic mist producer will produce mist and small water droplets will be attached to the surface of dialysis membrane (sheet or tubing) and will condense and the water drops will fall back in the solution tank, where the ultrasonic probe produces the mist. When the droplet is attached to the membrane surface, the dialysis will take place.

Abstract: A spin column device, which contains a rigid porous filter that retains its shape during centrifugation, chromatography methods using the device to isolate a desired substance, e.g., a biological molecule, from other substances in a mixture, and kits containing the device with one or more reagents for use in the method.

Abstract: A water improvement/purification container has: a) an elongated housing; b) a water entry; c) two water exit ports adjacent one distal end of the housing; d) the water port providing supply water first to a macrofilter within the housing; e) the intermediate water source exiting the macrofilter flowing into a reverse osmosis membrane; f) the intermediate water being separated into two streams, g) the first stream being vented through the second of the two water exit ports; and h) the second stream being vented out of the housing as waste water through the first of the two water exit ports.

Abstract: A connector for connecting a dialysate port of a dialyzer with a dialysate-carrying line and a dialyzer. The connector has a recess with a shift element on the end which accommodates the dialyzer port. The shift element is accommodated in the recess and is displaceable between a first position and a second position perpendicular to the direction of the lumen on the first end. The shift element does not pass through the lumen in the first position. In the second position, the lumen is constricted so that the connector with the shift element can be placed on the dialysate port and the connector locked on the dialysate port through engagement of the shift element behind an undercut on the port.

Abstract: The invention provides a sealing gasket for mounting in a passage (5) of a support plate (4) to surround the end of a tubular-shaped filter element (3) provided with at least one fluid flow channel (31), the channel lying within a flow section Sc, the gasket being constituted in the form of a sleeve: possessing a height h not less than the height hps of the passage (5) in the support plate (4); and presenting an overlap bore (15) for the filter element (3) defined between one end (16) of the sleeve and a shoulder (17) which co-operates with the other end of the sleeve to define a channel bore (19) for the fluid, the shoulder (17) possessing a surface for acting as an abutment for the terminal portion of the filter element and presenting dimensions that are adapted to extend outside the flow section Sc so as to avoid impeding fluid circulation, the overlap bore (15) being provided with a groove (28) adjacent to the shoulder (17) in order to allow the gasket to creep.

Abstract: An apparatus for the transfer of mass and heat including a membrane having a hydrophilic surface and an opposing hydrophobic surface. The construction prevents transmission or leakage of fluids from one side of the membrane to the other regardless of pressure gradients within the membrane bubble point or water intrusion pressure range, but allows the transfer of vaporized fluid from one side of the membrane to the other.

Abstract: A spin column device, which contains a rigid porous filter that retains its shape during centrifugation, chromatography methods using the device to isolate a desired substance, e.g., a biological molecule, from other substances in a mixture, and kits containing the device with one or more reagents for use in the method.

Abstract: The scope of the invention is to apply an electric current or to use a kind of iontophoresis system with the hemodialysis cartridge and system (the proposed method is also applicable to peritoneal dialysis or other similar methods) to remove unwanted molecules from blood, plasma or serum or other body fluids and to increase the effectiveness of the process. This cartridge can be used for patients with uremia and cartridge fixed to the conventional hemodialysis machine and additionally the electric current applied to the electrodes placed in to the cartridge or electrode connectors placed to the conventional cartridge. When the system activated, the molecules in the blood or other body fluid migrates to the hemodialysis solution. Charged ions or uncharged molecules move together with electroosmotic flow. The sterilized electrodes preferably made by Ag/AgCl to prevent pH changing effect. Other apparatus can also be used for providing an electropotential gradient.

Abstract: This invention discloses dialysis devices, related housings, related membranes, related kits, and related methods.

Abstract: A novel separator assembly for a spiral flow reverse osmosis apparatus is provided. In one embodiment, the separator assembly comprises a central core element comprising at least two permeate exhaust conduits and not comprising a concentrate exhaust conduit. Each permeate exhaust conduit defines an exhaust channel and one or more openings allowing fluid communication between an exterior surface of the permeate exhaust conduit and the exhaust channel, said permeate exhaust conduits independently defining a cavity between said conduits. The cavity is configured to accommodate a first portion of a membrane stack assembly comprising at least one feed carrier layer, at least two permeate carrier layers, and at least two membrane layers. A first portion of the membrane stack assembly is disposed within the cavity, and a second portion of the membrane stack assembly is wound around the central core element and forms a multilayer membrane assembly disposed around the central core element.

Abstract: A filtration system for collecting bone fragments during surgery performed on a patient includes a cylinder having a rotating disk with circumferential arms extending radially in the cylinder to define pockets. The rotating disk includes a longitudinal hub that carries an outlet connected to a central passageway formed in the disk. A plurality of apertures on the disk permit the liquid to flow into the passageway and through the outlet while the pockets retain the bone fragments. The disk is rotated to align circumferential spaced pockets to align with the inlet and outlet ports. The disks includes bearing surfaces that permit the rotation thereof and the arms are spaced from the cylinder inner surface to allow the flow of fluid in the event the pockets fill and clog the apertures and prevent flow into the outlet passage.