A device for removing ions from a solution. The device includes first and second end plates, an anion exchange membrane positioned between the first and second end plates, a first multiple of two or more first cation intercalation electrodes positioned between the first end plate and the anion exchange membrane, and one or more second intercalation electrodes positioned between the second end plate and the anion exchange membrane. The first multiple of two or more first cation intercalation electrodes and the one or more second intercalation electrodes are configured to receive an electric bias of current or voltage such that the first multiple of two or more first cation intercalation electrodes and the one or more second intercalation electrodes store and release ions from the solution.

The invention relates to an apparatus for separating hydrogen from a gas mixture, comprising a vessel which defines an inlet collection space for the gas mixture and an offtake collection space for hydrogen, where the inlet collection space is separated from the offtake collection space by means of a hydrogen-permeable membrane. The invention is also directed to a process for producing an apparatus for separating hydrogen from a gas mixture, which comprises a hydrogen-permeable membrane, a gas mixture inlet, a hydrogen offtake and a residual gas outlet.

A method for manufacturing a hollow fiber membrane module, the hollow fiber membrane module including: a hollow fiber membrane bundle including a plurality of hollow fiber membranes; a housing configured to contain the hollow fiber membrane bundle; and a potting part in which a potting agent is added between an outer surface of the hollow fiber membranes and an inner surface of the housing at both end regions or at one end region of the hollow fiber membrane bundle, wherein the method including: providing a sheet-shaped spacer in a space between the hollow fiber membranes at the both end regions or at the one end region of the hollow fiber membrane bundle; and adding a potting agent between the outer surface of the hollow fiber membranes and the inner surface of the housing at the both end regions or at the one end region of the hollow fiber membrane bundle such that the provided spacer is embedded, wherein the potting agent includes resin, rubber, or elastomer, as a main ingredient, and wherein the spacer is a net, a non-woven fabric, a porous sheet, or a film.

Methods and devices are disclosed for a separation device. A separation device includes a separation module having a separation membrane separating an interior of the separation module into a retentate compartment and a permeate compartment. The retentate compartment includes at least one retentate channel, a feed port fluidly coupled to the at least one retentate channel and a retentate port. The permeate compartment includes at least one permeate channel disposed within the permeate compartment and a permeate port fluidly coupled to the at least one permeate channel, a retentate collector fluidly connected to the retentate port. The device further includes a feed reservoir, a permeate reservoir, a fluidic gate located between the feed reservoir and the separation module, a vent located between the retentate channel and the permeate channel end adjacent the adjacent the retentate port and a pressure differential source applied across the separation module.

Electrodeionization and electrodialysis systems which eliminate or substantially prevent the feed water from entering the concentrating compartments, for improving the recovery of product water as well as improving the current efficiency. Electro-osmotically generated flows of water entering from the diluting compartments of the stack constitutes the majority of concentrate feed, leading to the production of high purity, desalinated waters in the diluting compartments and highly concentrate solutions in the concentrate compartments.

Methods of making membrane elements for fluid or gas filtration, comprising applying feed or reject spacers, or intermediate spacers, or fold line protection strips, or end support strips directly to a membrane sheet, or to a substrate material which are subsequently applied to a membrane sheet, which thereby avoids contamination from directly printed adhesives, inks, or polymers, or damage from heat or radiation damage to the membrane sheet during direct application of spacers or patterns to the surface of the membrane sheet, thereby avoiding utilization of conventional feed spacer mesh materials. Membrane sheets and spiral wound filtration elements having spacers applied to defined regions of the sheet, in some embodiments having spacers mounted on substrates with different material properties, e.g., stiffness, than the underlying membrane.

A humidifier for humidifying a dry cathode supply air via a humid cathode exhaust air in a fuel cell system, may include a housing, a membrane stack, and/or a sealing arrangement. The membrane stack may include a plurality of membranes, two first side surfaces, two second side surfaces, and/or two third side surfaces. The plurality of membranes may be stacked on one another transversely to a longitudinal direction of the membrane stack. The first side surfaces may be arranged opposite one another. The second side surfaces may be arranged opposite one another. The third side surfaces may be arranged opposite one another. The sealing arrangement may include two sealing frames, each of the sealing frames is assigned to one of the respective first side surfaces. Each of the sealing frames may have a frame-shaped contact area and a retaining edge protruding from the contact area.

A membrane module comprising a hollow fiber membrane bundle with a longitudinal extent, a membrane bundle cross section and a first and a second bundle end, the bundle comprising a multitude of hollow fiber membranes extending between the first and the second bundle end, and also comprising, within the membrane bundle cross section, a proportion of threads which are arranged between the hollow fiber membranes and which keep the hollow fiber membranes apart. The arrangement of the threads between the hollow fiber membranes is such that at the first bundle end and/or at the second bundle end the hollow fiber membranes protrude beyond at least some of the threads, such that the hollow fiber membrane bundle has a smaller proportion of threads in a first and/or second end region, extending from the first and/or the second bundle end, than in a bundle region, located between the first and the second bundle end, which has a maximal proportion of threads, the length of the first end region and/or the length of the second end region being 1% to 45% of the bundle length.

A disposable cell enrichment kit includes a crossflow filtration device configured to be disposed along a main loop pathway and to receive a process volume containing a biological sample and utilize crossflow filtration, via a micro-porous membrane, to retain a specific cell population in a retentate from the process volume and to remove a permeate including certain biological components from the process volume. The crossflow filtration device includes a laminated filtration unit that includes the micro-porous membrane, a first mating portion, a second mating portion, and a membrane support. The membrane support includes a first plurality of structural features that define a first plurality of openings, wherein the first plurality of structural features are coupled to the micro-porous membrane and provide support to the micro-porous membrane, and the first plurality of openings allow the permeate to flow through them after crossing the micro-porous membrane.

A fluid separation apparatus comprising a fluid separation membrane is provided. The fluid separation apparatus comprises a fluid separation membrane extending in one direction and having a cross-section with a closed curve shape, wherein the fluid separation membrane has a thickness of 0.1 mm to 2 mm, and an outer diameter of 60 mm to 360 mm when the cross-section is adjusted to be circular.