A method for preparing a core-shell structure polymer magnetic nanosphere with a high Cr (VI) adsorption capacity includes: adding Fe3O4 powder into a mixed solution of water and ethanol, dispersing Fe3O4 powder in the solution evenly by ultrasound, sequentially adding resorcinol and formaldehyde into the suspension to adjust a pH, stirring and reacting to obtain Fe3O4@RF evenly dispersed in a chitosan solution, dropwise adding the prepared suspension into a mixed solution of paraffin and span 80, stirring for a period of time, adding a glutaraldehyde aqueous solution, stirring and reacting to obtain a magnetic chitosan nanosphere. The magnetic chitosan nanosphere prepared may be applied to adsorbing Cr (VI) in a water solution. Not only the magnetic chitosan nanospheres prepared has a high adsorption capacity for Cr (VI), but also can be quickly separated by an external magnetic field after adsorption.

A gas adsorbing material particle includes an additive material particle having a moisture adsorption property; and a layer of a gas adsorbing metal disposed on a surface of the additive material particle, wherein the gas adsorbing metal is inactivated by moisture and adsorbs a target gas, wherein an average thickness of the layer of the metal is less than or equal to about 37 micrometers.

The invention relates to a method for manufacturing a multicapillary packing for an exchange of material including the formation, by a 3D printing method, of a monolith having a porous mass through which a plurality of parallel channels passes, opening on an inlet face and an outlet face of the packing, the 3D printing method being chosen among: selective laser sintering, molten wire deposition, stereolithography, binder spraying and spraying of material, the porous mass being suitable for allowing the diffusion of material to be exchanged between the channels.

Some embodiments of the present disclosure relate to a device comprising a sorbent polymer composite and at least one phosphonium halide. In some embodiments, the device is configured to treat a flue gas stream. In some embodiments, the flue gas stream comprises oxygen, water vapor, at least one SOx compound, and mercury vapor. Some embodiments of the present disclosure relate to a method comprising treating the flue gas stream by: passing the flue gas stream over the device, reacting the oxygen and water vapor of the flue gas stream with the at least one SOx compound on the sorbent polymer composite, so as to form sulfuric acid, and reacting the mercury vapor with the at least one phosphonium halide, so as to fix molecules of the mercuiy vapor to the sorbent polymer composite.

The invention concerns a method for producing a chromatography analysis column, the resulting column, and a device comprising such a column. The method according to the invention comprises the following steps: (a) depositing on the flat surface of a substrate a first layer of particles which are intended to form the stationary phase; (b) depositing on the layer at least one second layer of compactly assembled particles; (c) impregnating the first and second layers with a light radiation-sensitive material, to form at least two compactly assembled particle layers impregnated with sensitive material; (d) insolating these layers in the regions corresponding to the desired internal shape of the chromatography analysis column, if the light radiation-sensitive material behaves like a positive resin, or outlining this internal shape if the light radiation-sensitive material behaves like a negative photosensitive resin; (e) eliminating either the regions insolated in step (d) if the light radiation-sensitive layer behaves like a positive photosensitive resin, or the regions not insolated in step (d) if the light radiation-sensitive material behaves like a negative photosensitive resin; and (f) covering and sealing the structure obtained in step (e) with a cover covered on the face facing the layers with at least one layer of compactly assembled particles which are identical to or different from those deposited on the substrate surface. The invention is used in particular in the field of chemical analysis.

The present disclosure is directed to surface modified materials such as stationary phase materials for performing size exclusion chromatography. Aspects of the present disclosure feature materials surface modified with a moiety including a polyethylene glycol (PEG) functionality and a moiety comprising a diol functionality. Such surface modified materials exhibit a reduced propensity for ionic and hydrophobic secondary interactions.

Carbide-derived carbons are provided that have high dynamic loading capacity for high vapor pressure gasses such as H.sub.2S, SO.sub.2, or NH.sub.3. The carbide-derived carbons can have a plurality of metal chloride or metallic nanoparticles entrapped therein. Carbide-derived carbons are provided by extracting a metal from a metal carbide by chlorination of the metal carbide to produce a porous carbon framework having residual metal chloride nanoparticles incorporated therein, and annealing the porous carbon framework with H.sub.2 to remove residual chloride by reducing the metal chloride nanoparticles to produce the metallic nanoparticles entrapped within the porous carbon framework. The metals can include Fe, Co, Mo, or a combination thereof. The carbide-derived carbons are provided with an ammonia dynamic loading capacity of 6.9 mmol g.sup.−1 to 10 mmol g.sup.−1 at a relative humidity of 0% RH to 75% RH.

The present invention relates to a radionuclide adsorbent, which includes a hollow space (specifically, an area which is entirely empty or in which transition metal oxide particles are present); and a transition metal-ferrocyanide shell (specifically, a transition metal-ferrocyanide shell having a structure in which a plurality of two-dimensional nano flakes overlap or a transition metal-ferrocyanide shell having a structure in which a plurality of three-dimensional nano polyhedrons agglomerate) formed on the space surface, a preparation method thereof, and a method of removing a radionuclide using the same.

The present invention provides compositions for removal of arsenic or heavy metal contaminants in the process of fluid filtration comprising an organically modified inorganic adsorbent, wherein the composition is produced by reaction with 1,3-dipolar compounds prior to filtration. Also provided are systems for fluid filtration, comprising compositions as provided herein, in a column or column-like format, wherein a fluid is provided to the column such that the fluid flows through the organically modified inorganic adsorbent, and wherein contaminants present in the fluid are bound to the composition. Additionally provided are methods for fluid filtration, comprising contacting a fluid sample with the composition of claim 1 and collecting the filtered fluid sample after filtration.

Method and systems are disclosed for the removal of metal contaminants from aqueous mediums. In an example, a chamber contains activated sorptive media and a primary ligand and optionally, a secondary ligand that has been loaded onto the activated sorptive media using hydraulic loading. A pre-treatment of the sorptive media, a specific volume of the activated sorptive media within the chamber, specific pH ranges of aqueous mediums, and hydraulic loading of the primary ligand and optionally, a secondary ligand, known as dynamic fluidized loading. Pore pressures of the seeding solution within the media are at least sufficient to overcome the gravitational forces acting on the media within the column. The methods and systems provide a highly uniform and predictable loading of the primary ligand and optionally, the secondary ligand, onto the activated sorptive media throughout the sorptive media for effective sorption and increased capacity for metal removal from aqueous mediums.