An absorbent composition for environmental waste solidification includes a population of superabsorbent polymer particles (SAP) and a second item mixed with the population of SAP. The absorbent composition is configured to absorb moisture from ash waste.

A solid particulate reactive sorbent for decontaminating toxic chemical and biological agents and its method of making. The reactive sorbent comprising a plurality of aggregates formed from linked hydrophilic nanoparticles and individual nanoparticles that bind at least one detoxifier, such that the sorbent absorbs the agents, allowing the detoxifier to oxidize and decontaminate the agents for removal. More preferably, the hydrophilic nanoparticles comprise fumed silica and the detoxifier comprises hydrogen peroxide.

Solid material having an open multiple and at least partially interconnected porosity, comprising an inorganic matrix made of a microporous and mesoporous geopolymer, in which at least partially interconnected open macropores delimited by sides or walls made of microporous and mesoporous geopolymer are defined, and particles of at least one solid compound different from the geopolymer being distributed in the macropores and/or in the sides or walls. Method for preparing said material. Method for separating at least one metal or metalloid cation from a liquid medium containing it, wherein said liquid medium is placed in contact with the material.

Disclosed is a method for improving a water absorption amount under load by water absorbent resin particles, the method including shaking a powder containing a plurality of water absorbent resin particles contained in a container. An amount of powder corresponding to a theoretical filling rate of less than 100% may be contained in the container.

Disclosed is a method for improving a water absorption amount under load by a powder, the method including shaking a powder containing a plurality of water absorbent resin particles while applying a load to the powder. A maximum value of an acceleration received by the powder to be shaken may be 0.050 to 4.0 G.

A production method of water-absorbent resin particles is disclosed, the method including: preparing a monomer aqueous solution containing an ethylenically unsaturated monomer and silica; polymerizing the ethylenically unsaturated monomer in the monomer aqueous solution by an aqueous solution polymerization method to obtain a hydrogel-like polymer; and coarsely crushing the hydrogel-like polymer, in which a concentration of the silica in the monomer aqueous solution is 0.02 to 4.0 ppm.

The present invention relates, in general terms, to methods of forming activated carbon. The method of forming activated carbon comprises mixing carbon black with an activation catalyst and heating the carbon black in order to form the activated carbon. The present invention also relates to applications of activated carbon as disclosed herein. In a preferred embodiment, the activation catalyst is selected from ammonium persulfate, sodium persulfate, potassium persulfate or a combination thereof.

[Problem] To provide a particulate water-absorbing agent that can significantly reduce re-wet even when pressure is applied to the particulate water-absorbing agent from the outside when the particulate water-absorbing agent is in a swollen state.

[Solution] A particulate water-absorbing agent comprising a surface-crosslinked polyacrylic acid (salt)-based water-absorbing resin as a main component and satisfying the following expression (1).

AAP(2.06 kPa)+RCAP(2.06 kPa)≥0.58×CRC+55.6  (1),

wherein AAP (2.06 kPa) represents absorption capacity (g/g) under a pressure of 2.06 kPa, RCAP (2.06 kPa) represents retention capacity against pressure after swelling (g/g), and CRC represents absorption capacity without pressure (g/g).

A method for producing a modified sawdust sorbent. The method involves sulfonating sawdust with sulfuric acid and oxidizing the sulfonated sawdust with hydrogen peroxide. The method yields a modified sawdust sorbent containing sulfonated and oxidized cellulose. The modified sawdust sorbent has a higher surface area, higher organic dye adsorption capacity, and more rapid organic dye adsorption rate than unmodified sawdust. A method of using the modified sawdust sorbent for organic dye removal from water is included.

In accordance with one aspect of the presently disclosed inventive concepts, a porous ceramic structure includes a three-dimensional printed structure having predefined features, where the three-dimensional structure has a geometric shape. The average length of the features may be at least 10 microns. The three-dimensional structure includes a ceramic material having an open cell structure with a plurality of pores, where the pores form continuous channels through the ceramic material from one side of the ceramic material to an opposite side of the ceramic material.