Provided are a spiral-wound gas separation membrane element, a manufacturing method therefor, a gas separation membrane module and a gas separation apparatus that include the element. The element includes a laminated body wound around a perforated central tube and including a separation membrane-flow channel member composite body. The composite body includes a gas separation membrane including a first porous layer and a hydrophilic resin composition layer. The gas separation membrane is folded with the first porous layer being located outside the hydrophilic resin composition layer. The composite body also includes a flow channel member that forms a gas flow channel, the flow channel member being sandwiched in the folded gas separation membrane. The flow channel member is provided with a first cover that covers one end portion of four end portions. The first cover is located closest to a turn-back part of the folded gas separation membrane.

The present invention relates to a fibre for purification of liquids comprising a matrix of polymer with organosilane impregnated therein and a method for preparing the same. The fibre of the present invention is capable of providing at least 2 log reduction of viruses, bacteria and cysts and flux of 10 to 1000 litre per square meter per hour at 2 psig.

A membrane distillation (MD) system consisting of a membrane module and carbon nanotube immobilized membrane for organic solvent separation is disclosed. The MD module includes a feed inlet and outlet, a sweep gas inlet, and a sweep gas outlet. Thermostats are positioned at the feed inlet and outlet to measure the change in temperature. Preferential sorption of the organic on carbon nanotube immobilized membrane contributes to enhanced solvent removal of the MD system. A pervaporation (PV) system consisting of a membrane module and polyvinyl alcohol (PVA) mixed matrix membranes with graphene oxide (GO)—carbon nanotubes (CNTs) for enhanced purification of the alcohol solution after membrane distillation to remove trace amount of water is disclosed.

Described herein are nanofibers and methods for making nanofibers that include any one or more of (a) a non-homogeneous charge density; (b) a plurality of regions of high charge density; and/or (c) charged nanoparticles or chargeable nanoparticles. In one aspect, the present invention fulfills a need for filtration media that are capable of both high performance (e.g., removal of particle sizes between 0.1 and 0.5 μm) with a low pressure drop, however the invention is not limited in this regard.

The present invention relates to a new method for creating nanopores in single layer molybdenum disulfide (MoS.sub.2) nanosheets (NSs) by the electrospray deposition (ESD) of silver ions on a water suspension of the former. Electrospray deposited silver ions react with the MoS.sub.2 NSs at the liquid-air interface resulting in Ag.sub.2S nanoparticles (NPs) which goes into the solution leaving the NSs with holes of 3-5 nm diameter. Specific reaction with the S of MoS.sub.2 NSs leads to Mo-rich edges. Such Mo-rich defects are highly efficient for the generation of active oxygen species such as H.sub.2O.sub.2, under visible light, which causes efficient disinfection of water. The holey MoS.sub.2 NSs shows 10.sup.5 times higher efficiency in disinfection compared to normal MoS.sub.2 NSs. Developed a conceptual prototype and tested with multiple bacterial strains and a viral strain, demonstrating the utility of the method for practical applications.

A nanocomposite including a mesoporous, macroporous, or a combination thereof oxide and a zeolitic imidazolate framework (ZIF) that is filling the pores of the oxide to form a ZIF phase embedded and at least substantially confined mostly within the oxide. Methods of making nanocomposites including the steps of depositing an oxide in the pores of a mesoporous oxide; and further treating the resulting material with vapor, liquid, or supercritical CO.sub.2 comprising an azole-based compound, a carboxylate based compound, or a combination thereof. Use of disclosed articles to separate propylene and propane in a mixture thereof.

Provided herein are, inter alia, biological manufacturing and downstream purification processes.

Provided herein are, inter alia, biological manufacturing and downstream purification processes.

The present invention provides a separation membrane that is suitable for separating an acid gas from a gas mixture containing the acid gas and has a high acid gas permeability. A separation membrane (10) of the present invention includes: a separation functional layer (1); a porous support member (3) supporting the separation functional layer (1); and an intermediate layer (2) disposed between the separation functional layer (1) and the porous support member (3), and including a matrix (4) and nanoparticles (5) dispersed in the matrix (4).

The porous hollow fiber membrane of the present invention contains a thermoplastic resin, and includes a surface having a surface porosity of 32 to 60% and a fine pore diameter of 300 nm or less, and has a compressive strength of 0.7 MPa or more. The porous hollow fiber membrane of the present invention may include at least two layers, and in this case, the surface of one layer has a thickness of backbone of 0.3 to 20 μm and a fine pore diameter of 0.3 to 10 μm, and the surface of the other layer has a surface porosity of 32 to 60% and a fine pore diameter of 0.05 to 0.3 μm.