The present disclosure is directed to stationary phase materials (e.g., porous inorganic-organic hybrid particles) for performing size exclusion chromatography. Embodiments of the present disclosure feature hydroxy-terminated polyethylene glycol surface modified stationary phase materials.

An air filter including a filter support that supports polymeric sorbent particles. The polymeric sorbent particles are the reaction product of a hydrolyzed divinylbenzene/maleic anhydride precursor polymeric material with a nitrogen-containing compound, with the nitrogen-containing compound being ionically attached to the hydrolyzed divinylbenzene/maleic anhydride.

The present invention describes a process for producing nanostructured material, produced from polymer waste doped with alkaline metals and/or alkaline earth metals, which is capable of capturing and storing CO.sub.2. The process for obtaining the material uses waste generated by the polymer industry and is therefore environmentally sustainable. The product produced, that is, the nanostructured material, shows high CO.sub.2 absorption capacity, being able to absorb up to 80% by weight in mass in CO2. In addition, the product produced shows low density, an important characteristic for application in vehicles. Therefore, the product obtained can be used for capturing and storing CO.sub.2 emitted by different emission sources, mainly mobile sources such as vehicles, but can also be used in industries such as the mining industry, oil industry, inter alia, in addition to the automotive industry.

A method for separating metal ions from a liquid includes a step of providing a solution having metal-containing ions and associated negative counter ions in a liquid. The metal-containing ions are contacted with a dendrimer to form solid particles of metal-containing ion-dendrimer complexes. The solid particles of metal-containing ion-dendrimer complexes are separated from the solution.

A process is described for the removal of carbon dioxide from a gas mixture containing hydrogen by contacting the gas mixture with a shaped sorbent comprising a plurality of layers of photopolymerized resin containing particles of a molecular sieve carbon dioxide sorbent material.

The present invention relates to a method and apparatus for providing and/or receiving audible sound. In particular, the invention relates to apparatus, such as a micro speaker, which includes an active region which comprises an adsorbent element in the form of a self-supporting monolith-like element with a porous reticulated structure. The adsorbent element includes adsorbent material which comprises microporous organic polymer (MOP) material. The apparatus of the present invention is suitable for use in an electronic device, for example a mobile or portable electronic device, to provide improved audible sound.

A particulate plug for removing a preservative from a solution, suspension, or emulsion comprising a drug is presented. The plug comprises microparticles of a hydrophobic polymer/fatty acid blend. The microparticles of hydrophobic polymer/fatty acid blend selectively absorb preservative allowing the drug to remain in solution for delivery.

Provided herein are methods of reducing bioburden of (e.g., sterilizing) a chromatography resin that include exposing a container including a composition including a chromatography resin and at least one antioxidant agent and/or chelator to a dose of gamma-irradiation sufficient to reduce the bioburden of the container and the chromatography resin, where the at least one antioxidant agent and/or chelator are present in an amount sufficient to ameliorate the loss of binding capacity of the chromatography resin after/upon exposure to the dose of gamma-irradiation. Also provided are reduced bioburden chromatography columns including the reduced bioburden chromatography resin, compositions including a chromatography resin and at least one chelator and/or antioxidant agent, methods of performing reduced bioburden column chromatography using one of these reduced bioburden chromatography columns, and integrated, closed, and continuous processes for reduced bioburden manufacturing of a purified recombinant protein.

Material complexes that capture biologicals and methods of synthesizing and using such complexes composed of fluid-insoluble material and a receptor are provided herewith. The fluid-insoluble material has reactive functionality on its surface, including hydroxyl, amino, mercapto or eposy functionality material. The material can be agarose, sand, textile, or any combination thereof. The receptor is selected from the group consisting of mono-and poly-saccharides, heparin, or any combination thereof. Also provide are methods whereby releasing the captured biologicals and is controllable.

A liquid chromatography packing material which includes a polymer packing material into which 1.50 mmol or more of carboxyl groups are introduced per 1 g of the packing material, and an index indicating pH of the surface of the polymer packing material as determined by hydrophilic interaction chromatography (HILIC) is 1.30 or more and the index indicating hydrophilicity of the surface of the polymer packing material as determined by a hydrophilic interaction chromatography (HILIC) is from 1.00 to 1.30.