Disclosed are daucus-based oxygen scavenging compositions and materials, particularly of the carrot species, and their methods of use in containers and packaging of oxygen sensitive products. Further disclosed are daucus-based oxygen scavenging materials used in combination with tea-based oxygen scavenging compositions. Such compositions, materials and containers are of use for preserving the shelf-life of a myriad of products such as foods, pharmaceuticals, cosmetics, tobacco and cannabis.

A water-absorbing resin that exhibits excellent absorption performance and a high permeation rate with respect to liquids to be absorbed, and that effectively reduces liquid leakages, even in an absorbent body using a large amount of the water-absorbing resin. The water-absorbing resin is formed from a polymer of a water-soluble ethylenically unsaturated monomer, and when a cross-sectional image of the water-absorbing resin obtained by X-ray computer tomography is observed, the percent area of cavity portions in the cross-sectional image is 2-10%. The liquid flow rate index when a physiological saline liquid column flow rate test is performed on the water-absorbent resin having a particle diameter of 250 to 500 μm at 37° C. is 5-20.

An adsorbent composition for capturing pollutants includes a porous composition that includes a plurality of ferric oxyhydroxide particles and an additional component in the porous composition. The additional component includes one of copper chloride (CuCl.sub.2), zinc chloride (ZnCl.sub.2), polyvinylpolypyrrolidone, silicon carbide, silicon dioxide, activated carbon or other carbonaceous material, and a combination thereof.

Methods of dewatering viscous materials are provided. The method comprises contacting the viscous material with pressurized carbon dioxide at a temperature and for a time wherein at least a fraction of water is expressed from the viscous material. Then the pressure is released, and the water expressed from the viscous material is removed to yield a dewatered product. Exemplary viscous materials that can be dewatered by the method include black liquor from wood pulping operations, wet lignin, wet super water absorbent polymers and sugar solutions. The pressurized carbon dioxide is present in subcritical or supercritical form. The method provides dewatering at reduced cost.

An apparatus for collection and disposal of fats, oil and grease that includes a fabric container having at least one open end, a biogradable material capable of absorbing a large quantity of fats, oil and grease positioned in the container through the open end, the container and biogradable material adapted for being placed in a source of fats, oil and/or grease for absorbing the Pats, oil and/or grease for removal from the source and for transport to a location for processing.

A method for producing superabsorbent polymers from polyacrylonitrile (PAN) virgin or recycled from acrylic fibre manufacturing waste and discarded fabrics subjecting the PAN to alkaline hydrolysis with pressurized water vapour of up to 5 kgf/cm.sup.2 and a PAN:OH.sup.− molar ratio of 1:0.5 to 0.95, to obtain a cross-linked poly(acrylic acid-co-acrylamide) salt without using mechanical agitation, graphitizing agents with starch or cross-linking agents, and without precipitating the superabsorbent polymer obtained from the reaction medium with solvents or through pH adjustment with acids, the polymer obtained with recycled PAN leaves the autoclave already having a moisture content of 20% to 35% and a swelling capacity of >150 g H.sub.2O/g.

Some aspects of the present disclosure relate to a method comprising obtaining a sorbent polymer composite material, contacting the sorbent polymer composite material with mercury vapor to form a used sorbent polymer composite material; wherein the used sorbent polymer composite material comprises oxidized mercury and wherein the used sorbent polymer composite material emits oxidized mercury vapor; and contacting the used sorbent polymer composite material with a halogen source, so as to result in a treated sorbent polymer composite material. In some embodiments, the treated sorbent polymer composite material emits less than 0.01 μg oxidized mercury vapor per minute per gram of the treated sorbent polymer composite, compared to a used sorbent polymer composite, when measured at 65° C. in air having a relative humidity of 95%.

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 method of fabrication of a porous polymer aerogel amine material includes preparing a solution comprising at least a solvent, amine monomers having protecting groups, one or more crosslinkers, and one or more radical initiators, heating the solution to promote polymerization and to produce a polymerized material, performing solvent exchange with the polymerized material, causing a deprotection reaction in the polymerized material to remove the protecting groups to produce a deprotected material, soaking and rinsing the deprotected material to remove excess reagents and any byproducts of the deprotection reaction, and drying the deprotecting material to produce the amine sorbent. A system to separate CO.sub.2 from other gases has a polymer porous aerogel sorbent having greater than 5 wt % of amine containing vinyl monomers integrated into a polymer backbone, and the amine containing vinyl monomers may have a molecular weight of less than 100 g/mol.