Solvent and acid stable ultrafiltration and nanofiltration membranes including a non-cross-linked base polymer having reactive pendant moieties, the base polymer being modified by forming a cross-linked skin onto a surface thereof, the skin being formed by a cross-linking reaction of reactive pendant moieties on the surface with an oligomer or another polymer as well as methods of manufacture and use thereof, including, inter alia separating metal ions from liquid process streams.

The present invention relates to a separation membrane having both antibiotic and hydrophilic properties for water treatment and a preparation method thereof. In the separation membrane of the present invention, since an organic compound (antimicrobial and/or hydrophilic compound) is chemically conjugated to non-metal inorganic nanoparticles or metal nanoparticles, the nanoparticles are not eluted from the separation membrane even when the separation membrane is used for water treatment for a long period of time, so that the separation membrane may continuously maintain antimicrobial properties and high water permeability, is safe to the human body even when used for the treatment of drinking water, such as water purification, and exhibits characteristics in which stain resistance is also significantly enhanced due to antimicrobial and hydrophilic properties, which have been continuously imparted. Furthermore, high mechanical strength is exhibited by a metal or inorganic nanofiller introduced.

A subsea water processing system and associated methods are disclosed. The subsea water processing system includes a microfiltration unit, an ultrafiltration unit, and an electrochemical unit. The microfiltration unit includes an oil-tolerant microfiltration membrane and is configured to receive a stream of produced water and to produce a first treated stream of water. The ultrafiltration unit is fluidly connected downstream of the microfiltration unit, includes an oil-rejecting ultrafiltration membrane, and is configured to receive the first treated stream of water and to produce a second treated stream of water. The electrochemical unit is fluidly connected to at least one of the microfiltration unit or the ultrafiltration unit, and is configured to produce an acid and a base, and to deliver the acid, the base, or both the acid and the base to the at least one of the microfiltration unit or the ultrafiltration unit during a cleaning cycle.

A device for culturing, storing and expanding adherent renal cells. The device permits the adhesion and proliferation of the cells and the surface characteristics of the membrane material used in said device further permit the cellular matrix components (EMC). A method for expanding adherent renal cells and methods of using particular membranes for culturing, storing and expanding adherent renal cells. The membranes comprise a copolymer of acrylonitrile and sodium methallyl sulfonate as well as polyethylenimine.

The invention relates to obtaining a nanofiber membrane by coating a hollow braided rope (3) with a nanofiber layer (2), to the usage of said tubular nanofiber membrane as a support layer membrane, and to the fabrication of forward osmosis membrane by coating the surface thereof with thin composite film (1). Particularly, a tubular nanofiber forward osmosis membrane used in water & waste water treatment and desalination processes with high water flux, low reverse salt flux, as well as a low tendency of fouling, and the manufacturing method thereof are disclosed herein.

There is provided a composite gas separation membrane including a gas separation layer, which is formed to include a polyimide resin, on a support layer having gas permeability, in which the polyimide resin includes a repeating unit represented by the following Formula (I) ##STR00001## in Formula (I), X represents a group having a specific structure represented by any of the following Formulae (I-a) to (I-h), ##STR00002## in Formula (I), Y.sup.1 represents a group represented by the following Formula (II-a) or (II-b), and ##STR00003## in Formulae (II-a) and (II-b), R.sup.3 represents a substituent group, A represents a dissociable group, p represents 0 or 1, p1 represents an integer of 0 to 2, and p2 represents an integer of 2 or greater.

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 ?m) with a low pressure drop, however the invention is not limited in this regard.

Disclosed is a 1D nanofibers quasi-aligned, grid structure cross-laminated, and pore distribution and size controlled 3D polymer nanofiber membrane, and manufacturing method thereof. A 3D polymer nanofiber membrane controlled in pore size and porosity is formed by employing an electrospinning pattern forming apparatus that includes double insulating blocks quasi-aligns nanofibers in a specific direction by transforming an electric field and includes a current collector rotatable in 90. Additionally, the 3D polymer nanofiber membrane may be used for air filters, separator, water filters, cell culture membranes, and so on by allowing various properties thereto through a functional surface coating.

The invention relates to a blood treatment device configured to dephosphorylate extracellular adenosine triphosphate (ATP), adenosine diphosphate (ADP), adenosine monophosphate (AMP) and/or lipopolysaccharide (LPS) in the blood of a patient in need thereof in an extracorporeal blood circuit, wherein the device comprises a matrix having alkaline phosphatase (AP) immobilized thereon. The invention further relates to an extracorporeal blood circuit comprising a blood treatment device of the invention and to the blood treatment device for use as a medicament or to methods of treating an infection, preferably a blood or systemic infection, such as sepsis, and/or for the treatment of sepsis-associated acute kidney injury (AKI).

Disclosed herein is an in-situ process for the preparation of Metallic Organic Framework's (MOF's)polymer composites at room temperature, without requirement of pre-seeding o MOF's or substrate modification. Further, the invention provides MOF-polymer composites membranes, wherein MOF forms a layer substantially covering the porosity of the membrane.