A magnetic polymer adsorption material, preparation method and use thereof, which relate to the field of magnetic polymer materials. The preparation method comprises: (1) preparing magnetic nanoparticles; (2) dissolving the magnetic nanoparticles in a pore-forming agent, adding N-vinylpyrrolidone, divinylbenzene and an initiator respectively, and mixing uniformly; (3) adding an emulsifier and a dispersant into an aqueous solution; adding a part of the oil phase solution prepared in step (2) at the temperature below 60° C., and adding the rest of the oil phase solution when the temperature rises to 60° C. or above, reacting with stirring, precipitating and filtering the reacted solution, washing and drying the precipitate, and finally obtaining the magnetic polymer adsorption material. The material has the particle size of 2-100 μm, the magnetization of 5-19.5 emu/g and the specific surface area of 210-950 m.sup.2/g, and can be applied to the adsorption of inorganic and organic matters in solutions, the controlled release of inorganic and organic matters, and the separation of different substances.

There is described a particulate carbon adsorbent comprising 60 to 90% by wt carbon, wherein the particulate carbon adsorbent is a fibrous pyrolysis product of an organic fraction of waste screenings, and wherein the fibrous pyrolysis product predominantly comprises fibres having a diameter in the range about 10-40 μm and a length in the range about 50-500 μm. A method of manufacture is also described. The particulate carbon adsorbent is useful in of odour prevention in wastewater treatment and other wastewater processes.

Provided are: a water-absorbing agent achieving, in a balanced manner, both good physical properties and a decrease in speed of coloration with lapse of time even if the water-absorbing agent has a high moisture absorbing speed due to having a large specific surface area; and an absorbent body having a low ratio of pulp and achieving, in a balanced manner, both good physical properties suitable for a thin disposable diaper and a decrease in speed of coloration with lapse of time. The absorbent body contains a hydrophilic base material and a water-absorbing agent which contains: surface-crosslinked water-absorbing resin particles having a non-uniformly pulverized shape; α-hydroxycarboxylic acid (salt); and an aminocarboxylic acid-based chelating agent and/or a phosphorus-based chelating agent, a point plotted along an x-axis that represents an amount (x.sub.1 mol %) of α-hydroxycarboxylic acid (salt) extracted from the water-absorbing agent and along a y-axis that represents an amount (y.sub.1 mmol %) of an aminocarboxylic acid-based chelating agent and/or a phosphorus-based chelating agent extracted from the water-absorbing agent being within a range that satisfies a specific relational formula of x.sub.1 and y.sub.1, the water-absorbing agent having a moisture absorbing speed of 120 mg/g/hr or more at a temperature of 40±1° C. at a relative humidity of 75±1% RH.

The present disclosure relates to a preparation method for a super absorbent polymer film. Specifically, it relates to a preparation method for a new type of super absorbent polymer film, which is thin and exhibits excellent absorption performance. In addition, the super absorbent polymer film of the present disclosure has excellent flexibility and excellent mechanical properties, is free from scattering or leaking, and does not require an auxiliary substance such as pulp, so that products can be made thinner and the manufacturing process and costs may be reduced.

Provided is a humidity conditioning material with which an amount of absorbed moisture or an amount of released moisture is easily understood. Moreover, provided is a humidity conditioning device including the above humidity conditioning material. Furthermore, provided is a method for manufacturing a humidity conditioning material with which an amount of absorbed moisture or an amount of released moisture is easily understood, and the humidity conditioning material has high humidity conditioning performance. In addition, the humidity conditioning material includes: a humidity conditioning liquid containing a hygroscopic substance; and a holding portion holding the humidity conditioning liquid into a predetermined shape. The holding portion is formed of a polymeric material. The hygroscopic substance contains a hygroscopic metal salt. The humidity conditioning liquid contains a pH indicator, and changes in color in accordance with an amount of moisture contained in the humidity conditioning liquid.

Provided is a humidity conditioning material with which an amount of absorbed moisture or an amount of released moisture is easily understood. Moreover, provided is a humidity conditioning device including the above humidity conditioning material. Furthermore, provided is a method for manufacturing a humidity conditioning material with which an amount of absorbed moisture or an amount of released moisture is easily understood, and the humidity conditioning material has high humidity conditioning performance. In addition, the humidity conditioning material includes: a humidity conditioning liquid containing a hygroscopic substance; and a holding portion holding the humidity conditioning liquid into a predetermined shape. The holding portion is formed of a polymeric material. The hygroscopic substance contains a hygroscopic metal salt. The humidity conditioning liquid contains a pH indicator, and changes in color in accordance with an amount of moisture contained in the humidity conditioning liquid.

An aminated siliceous adsorbent, which is the reaction product of dried acidified rice husk ash having disordered mesopores and an amino silane, wherein amine functional groups are present on an external surface and within the mesopores of the dried acidified rice husk ash, and wherein the aminated siliceous adsorbent has a carbon content of 24 to 30 wt. %, based on a total weight of the aminated siliceous adsorbent. A method of making the aminated siliceous adsorbent and a method of capturing CO.sub.2 from a gas mixture with the aminated siliceous adsorbent.

A filter medium for removal of contaminants from wastewater. The filter medium includes a walnut shell particle having a metal hydro(oxide) nanoparticle bonded to the surface of the nut shell particle. The filter medium is particularly useful for treating produced water and wastewater generated in steam-assisted gravity drainage (SAGD) in recovery of hydrocarbons from oil sands to remove total organic carbon and silica. Processes for preparing the filter medium and for treating wastewater using the filter medium are also provided.

The present invention relates to a process for removing arsine from hydrocarbon mixture having 2 to 4 carbon atoms. Said process comprises the contact of the hydrocarbon mixture having 2 to 4 carbon atoms with the adsorbent, wherein said adsorbent is the metal organic frameworks (MOFs) comprising: a) at least 1 transition metal selected from group 1B metal, group 2B metal, and group 4B metal, and b) the organic ligand selected from dicarboxylic acid compound or tricarboxylic acid compound, and wherein said adsorbent is subjected to the treatment with alcohol.

Described herein are superabsorbent polymers that are made of copolymers of multiple charged monomers, where the charged moieties of different charged monomers have different distances from copolymer backbones. The copolymer-based superabsorbent polymers have significantly improved absorbency under load. The compositions and methods described herein are useful in a variety of absorbent products.