Disclosed are a superabsorbent polymer having improved anti-caking properties and a method of preparing the same, and the superabsorbent polymer having improved anti-caking properties includes a superabsorbent polymer, microparticles, and water, and to improve anti-caking properties of the superabsorbent polymer, the temperature of the superabsorbent polymer or water upon addition of water or the aging time upon stirring is adjusted, thereby preventing caking of the particles.

A product, a method of producing and a method of using are disclosed. The product comprises attapulgite that has been thermally activated. The product may have a permeability in oil in the range of 0.04-3 darcy and may have a surface area of 45-140 m.sup.2/g. The method of producing may comprise thermally activating a material that includes attapulgite by heating the material at a temperature in the range of 300 to 900° C. The method of decolorizing may include contacting for a contact time an oil with the bleaching clay product that comprises attapulgite that has been thermally activated, and separating the bleaching clay product from the oil to recover a decolorized oil that has a lower red color than the oil had prior to the contacting, and removing phosphorus and metals for hydrotreated vegetable oil (HVO)/renewable diesel feedstock pretreatment.

Provided herein are methods of making an adsorbent bed useful as a micro-reactor, or a catalytic and/or separation device. The adsorbent bed comprises a metal-organic framework composite. In the present methods, one or more metal-organic frameworks in powder form are mixed in a liquid to produce a metal-organic framework suspension or other type of metal-organic framework coating. A monolith is coated with the suspension or coating to provide the metal-organic framework composite having at least one metal-organic framework coating layer deposited on and bounded to the monolith. The metal-organic framework composite produced has a BET surface area of about 1 m.sup.2/g to about 300 m.sup.2/g and/or a comparative BET surface area of about 40% to about 100% relative to the metal-organic framework monolith, and pore size between about 1 nm and about 50 nm.

The present disclosure provides a filter for removing contaminants from a liquid or gaseous medium including a woven or nonwoven sheet of entangled carbon nanotubes. The present disclosure also provides a method for reducing the concentration of contaminants in a liquid or gaseous medium by contacting the liquid or gaseous medium with the filter.

The present disclosure provides a method of preparing a carbonaceous material capable of fixing arsenic and an application thereof. Through biomass pretreatment, biomass pyrolysis and arsenite fixation, a biochar activated by potassium carbonate and an arsenic-containing wastewater containing sulfur-containing substances are mixed and deoxidized, and an anaerobic culture is carried out, to fix arsenic by the biochar activated by potassium carbonate. The present disclosure solves the problems that arsenic is released from the soil and groundwater under anaerobic conditions, the ability of conventional passivatingagents to fix arsenic under anaerobic conditions is weakened, and the conventional carbonaceous materials not only cannot fix arsenic, but also accelerate the release of anaerobic arsenic.

A method for improving the hue of recycled BHET is provided. The method includes: providing a recycled polyester fabric; using a chemical de-polymerization liquid to chemically depolymerize the recycled polyester fabric to form a de-polymerization product; distilling out the chemical de-polymerization liquid from the de-polymerization product by evaporation; dissolving the BHET in water to form a aqueous phase liquid; adding an activated carbon material to the aqueous phase liquid to adsorb impurities; and cooling the aqueous phase liquid to crystallize the BHET from the aqueous phase liquid to obtain a recycled BHET.

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.

The present invention relates to a method for purification of liquid compositions containing at least one sphingolipid and the use of a specific clay mineral for the purification of such liquid compositions.

The invention relates to a process for preparing core-shell particles comprising the steps of (i) providing a dispersion of primary magnetic particles having a mean diameter lower than 200 nm in a solvent; (ii) adding one or more (semi-)metal (oxyhydr)oxide(s) and/or one or more precursor(s) of a (semi-)metal (oxyhydr)oxide to said dispersion; (iii) optionally adding a hydrolysis agent for said one or more precursor(s); (iv) injecting the dispersion in a spray dryer; whereby a (semi-)metal (oxyhydr)oxide shell is formed on the magnetic particles during spray drying. The invention also relates to particles obtainable by said process, to a formulation of said particles in a solvent and to the use of said particles or said formulation for RNA or DNA extraction.

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.