A blood treatment material has both the water permeability to allow removal of water from the blood and the ability to highly efficiently adsorb and remove, for example, inflammatory cells and inflammatory cytokines. The blood treatment material includes a hollow fiber membrane having a surface modified with a ligand containing an amino group(s), wherein the arithmetic mean roughness (RaA) of the blood-contacting surface of the hollow fiber membrane in the radial direction calculated by using a laser microscope is 0.10 ?m to 0.80 ?m.

A module for gas and/or vapor removal from a fluid stream is provided. The module includes at least one hollow fiber membrane including a first end and an opposing second end. The hollow fiber membrane includes a fiber wall defining an interior bore extending from the first end to the opposing second end and defining a passage for fluid flow through the hollow fiber membrane. The module includes a bed of metal organic framework (MOF) integrated into membrane pores of the fiber wall of the at least one hollow fiber membrane, into the hollow fiber membrane bore, and/or outside of the at least one hollow fiber membrane in an extracapillary space.

The present disclosure relates to semipermeable membranes based on acrylonitrile copolymers capable of adsorbing bacteria from fluids, methods of producing such membranes, and devices comprising such membranes.

The present application offers a solution to the current problems associated with recovery and recycling of precious metals from scrap material, discard articles, and other items comprising one or more precious metals. The solution is premised on a microporous chelating polymeric membrane. Embodiments include, but are not limited to, microporous chelating polymeric membranes, device comprising the membranes, and methods of using and making the same.

Autonomous localized permeability material systems are provided that can include: a dynamically permeable porous material; and immobilized reagents operatively associated with the porous material in sufficient proximity to trigger a localized change in material pore size upon reagent reaction. Methods for preparing these materials are also provided as well as methods for autonomously modifying localized permeability of material.

The invention provides methods for preparing a polymer-grafted and functionalized nonwoven membrane adapted for use in separation processes. The invention further provides so-formed membranes as well as improved separation methods utilizing the membranes. The polymer-grafted and functionalized nonwoven membranes are particularly formed utilizing thermal grafting. In particular, an acrylate or methacrylate polymer can be grafted onto a nonwoven web comprising a plurality of polymeric fibers to form a plurality of polymer segments covalently attached to the polymeric fibers. Thermal grafting particularly can comprise using a thermal initiator and exposing the nonwoven web to heat to initiate polymerization of the acrylate or methacrylate monomer. The grafted polymeric fibers can be functionalized to attach at least one functional group adapted for binding to a target molecule to the polymer segments of the grafted polymeric fibers.

An apparatus and method for evaporative containment of liquid or solid wastes includes an evaporative membrane for receiving the solid or liquid waste and at least one flap including a wicking layer, an odor-neutralizing layer, or both, and a skeletal frame. An apparatus and method for moisture removal from media includes a hydrophilic evaporative layer and a wicking layer, the hydrophilic evaporative layer being non-porous or nano-porous and allowing selective passage of vapor water molecules while preventing passage of suspended or dissolved solids, ions, salt, or pollutants, the wicking layer absorbing and spreading bulk moisture across a surface area. An apparatus and method for collecting liquid or solid wastes includes liquid and solid waste capture containers capable of volume reduction of captured waste and generating a liquid or gas effluent with fewer impurities than the captured waste.

A polymer composite article having retained solids is disclosed. The polymer composite article includes a composite region having a first porous polymer comprising a plurality of pores and the retained solids. The composite region has at least a portion of the retained solids immobilized within some of the pores. In embodiments where the retained solids are solid sorbent materials, the article is configured to receive carbon dioxide through the first porous polymer that can be adsorbed onto the solid sorbent.

An air treatment article is provided, comprising: a semipermeable barrier and a plurality of multi-staged non-film forming polymer abatement particles having a core polymer and at least one shell polymer; wherein the core polymer accounts for 1 to 25 wt % of the weight of the non-film forming polymer abatement particles; wherein the semipermeable barrier is disposed between an air atmosphere and the non-film forming polymer abatement particles; wherein the semipermeable barrier impedes passage therethrough by the non-film forming polymer abatement particles; wherein the semipermeable barrier permits passage therethrough by a for-treatment air containing a contaminant such that the for-treatment air can make contact with the non-film forming polymer abatement particles; wherein the non-film forming polymer abatement particles have an affinity for the contaminant.

A disposable, virus-trapping membrane, and a corresponding method to remove viruses from solution are described. The membrane includes a disposable, micro-porous filter membrane and a ligand immobilized on the membrane. The ligand irreversibly and selectively binds viruses. The ligand also has a pKa sufficiently high to repel antibodies via electrostatic charge repulsion.