Parallel plate devices for hemofiltration or hemodialysis are provided. A parallel plate device includes a parallel plate assembly having an aligned stack of stackable plate subunits, each stackable plate subunit having a through channel for blood, where the blood channels are opened up at opposite ends of the parallel plate assembly. The parallel plate assembly is configured to form filtrate/dialysate channels interleaved with the blood channels, adjacent channels being separated by a silicon nanoporous filtration membrane. A blood conduit adaptor is attached to the parallel plate assembly at each of the ends, and is configured to distribute blood to or collect blood from the blood channels. Also provided are systems and methods for using the parallel plate devices.

Provided is a method for making a porous graphene layer of a thickness of less than 100 nm, including the following steps: providing a catalytically active substrate, said catalytically active substrate on its surface being provided with a plurality of catalytically inactive domains having a size essentially corresponding to the size of the pores in the resultant porous graphene layer; and chemical vapour deposition and formation of the porous graphene layer on the surface of the catalytically active substrate;. The catalytically active substrate is a copper-nickel alloy substrate with a copper content in the range of 98 to less than 99.96% by weight and a nickel content in the range of more than 0.04-2% by weight, the copper and nickel contents complementing to 100% by weight of the catalytically active substrate.

The disclosure provides a method for producing a gas separation article, said gas separation article comprising: a gas separation membrane, optionally a support, and optionally an additional support said method comprising the steps of: a) providing a matrix comprising: a matrix material having a viscosity from 1 cP to 40000 cP, particles, said particles being free from functionalized carbon nanotubes, and optionally a solvent, b) contacting the matrix of step a) with a support comprising at least one side, said at least one side facing said matrix, thereby forming (i) a matrix side in contact with the support and (ii) a matrix side opposite the side in contact with the support, c) optionally contacting the matrix side opposite the side contacting the support with an additional support, d) subjecting said matrix being in contact with said support to one or more electric fields whereby the particles form particle groups in a plurality of substantially parallel planes, said particle groups in each of said plurality of substantially parallel planes being aligned substantially parallel with the one or more electric fields, e) fixating the matrix material so as to fixate the particle groups thereby forming a gas separation membrane, and f) optionally removing the support and/or the additional support.

The disclosure also provides a gas separation membrane obtainable by the aforementioned method as well as use thereof for separation of gases in a gas mixture.

A gas separation method includes supplying a mixed gas to a zeolite membrane complex and permeating a high permeability gas through the zeolite membrane complex to separate the high permeability gas from other gases. The mixed gas includes a high permeability gas and a trace gas that is lower in concentration than the high permeability gas. The molar concentration of a first gas included in the trace gas in the mixed gas is higher than the molar concentration of a second gas included in the trace gas in the mixed gas. The adsorption equilibrium constant of the first gas on the zeolite membrane is less than 60 times that of the high permeability gas. The adsorption equilibrium constant of the second gas on the zeolite membrane is 400 times or more that of the high permeability gas.

The present invention relates to an ion-selective composite membrane having a thickness of between 4 μm and 100 μm, comprising at least one inner layer disposed between two outer layers, wherein: —the outer layers are each formed of a first material comprising a network of nanofibres and/or crosslinked microfibres and pores with a diameter of between 10 nm and 10 μm, —the inner layer is formed of a second material comprising nanoparticles functionalized at the surface by charged groups and/or groups which become charged in the presence of water and having pores with a diameter of between 1 and 100 nm.

Textile article comprising a textile substrate to which graphene is applied in an amount from 0.5 to 20 g of graphene per square meter of textile substrate, wherein said graphene is dispersed in a polymeric binder and forms a thermal circuit heatable by exposure to electromagnetic radiation. There is also described a filter comprising said textile article, for example a face mask for personal health protection.

A flat ceramic membrane 1 has a plate-shaped porous support 21 made of ceramics and a filtration membrane 22 formed on an outer surface of the porous support 21. A plurality of water collection channels 2 where filtrate water obtained by permeation of water-to-be-treated through the filtration membrane 22 flows are formed inside the porous support 21. Further, a region where a distance between the water collection channels 2 is different is ensured inside the porous support 21.

A flat ceramic membrane 1 has a plate-shaped porous support 21 made of ceramics and a filtration membrane 22 formed on an outer surface of the porous support 21. A plurality of water collection channels 2 where filtrate water obtained by permeation of water-to-be-treated through the filtration membrane 22 flows are formed inside the porous support 21. Further, a region where a distance between the water collection channels 2 is different is ensured inside the porous support 21.

The invention relates to carbon supported crack- and tear-free graphene membranes of large area useful for selective gas separation, method of preparation and uses thereof. In particular, the invention relates to carbon supported crack- and tear-free graphene membranes having good gas separation performance, in particular high H.sub.2 permeance and H.sub.2/CH.sub.4 selectivities.

An object of the present invention is to provide a hydrogen permeable material having excellent hydrogen permeability. Another object of the present invention is to provide a composite member and a fuel cell including the hydrogen permeable material. The hydrogen permeable material comprises a perovskite type compound represented by the following general formula (1a). In another embodiment, the hydrogen permeable material comprises a hydrogen-containing perovskite type compound, which is the perovskite type compound represented by the general formula (1a) with introduced hydride ion (H.sup.−). Wherein M is at least one alkaline earth metal selected from the group consisting of Ba, Sr and Ca, x is a numerical value of 0 or more and 0.3 or less, y is a numerical value of more than 0 and 0.75 or less, w is a value at which an average valence of In is +1.0 or more and +2.5 or less, and y≥w.

M.sub.1-xZr.sub.1-yIn.sub.yO.sub.3-x-0.5y-2  (1a)