A layered sorbent material sheet includes a substrate sheet and a spacer sheet. The spacer sheet defines a plurality of spaced apart sorbent material strips. The sheets may be layered or rolled together. Multiple layers of alternating sheets are also disclosed. In some embodiments, the sorbent material sheets are arranged in a stacked configuration.

The present disclosure provides a method for preparing a high cohesive energy adsorbent for fluoride removal, which includes the following steps: S1. adding NaHF.sub.2—NiF.Math.6H.sub.2O additive to SiCO ceramic powder, and sintering at a temperature of 310-330° C. for 18-22h to obtain a sintered substance; S2. grinding the sintered substance to obtain particles with a size of 2-3 mm, and mixing the particles with polyacrylonitrile to form a composite polymer; and S3. molding the composite polymer by a vacuum baking process at a temperature of 75-85° C., then performing ball milling and sieving to obtain the high cohesive energy adsorbent for fluoride removal. The high cohesive energy adsorbent for fluoride removal may be used in the adsorption and separation of the C.sub.2F.sub.6—CHF.sub.3—CClF.sub.3 mixture system, and the contents of CHF.sub.3 and CClF.sub.3 are lowered to less than 10ppmv.

A natural zeolite block for improving water quality that is capable of being built in rivers, streams, and reservoirs having point and non-point pollutant sources to purify the water polluted by pollutants, to remove the eutrophication in the water to prevent the occurrence of green and red tides, and to consistently purify heavy metals and all kinds of harmful substances flowing into the water and to a method for manufacturing the same.

A lithium adsorbent includes an aluminum-based adsorbing material, a binder, and a wetting and dispersing agent. The binder includes at least one of a vinylidene fluoride-chlorotrifluoroethylene (VDF-CTFE) copolymer and a fluoroolefin-vinyl ether copolymer. The wetting and dispersing agent includes one or more of polyethylene glycol, sodium polyacrylate, polyvinyl alcohol, and formaldehyde condensate.

A particulate material includes agglomerated diatomaceous earth and a silicone binder. A process for preparing a diatomaceous earth product includes agglomerating at least one natural diatomaceous earth with at least one silicone material, and subjecting the agglomerated diatomaceous earth to at least one heat treatment at a temperature ranging from about 600° C. to about 1,000° C. A filter aid composition includes a diatomaceous earth product including an agglomerated diatomaceous earth and a silicone material. A method of filtering at least one liquid includes passing the at least one liquid through at least one filter membrane including a diatomaceous earth product including agglomerated diatomaceous earth and a silicone material.

A composite filter aid may include diatomaceous earth, natural glass, and a precipitated silica binder, wherein the filter aid has a permeability ranging from 3 to 20 darcys. A composite filter aid may include diatomaceous earth, perlite, and a precipitated silica binder, wherein the filter aid has an alpha density less than 15 lbs/ft.sup.3. A method for making a composite material may include blending diatomaceous earth and perlite, adding alkali silicate to the blended diatomaceous earth and perlite, and precipitating the alkali silicate as a binder to make the composite material. A method for filtering a beverage may include using a composite filter aid and/or composite material.

A pressure swing adsorption apparatus for the removal of one or more components such as oxygen from a mixture of gases such as air is disclosed. The apparatus includes pairs of columns (14, 16) for receiving a stream of compressed air with one column operating in a working mode whilst the other said column operates in a purging mode. The columns contain carbon molecular sieve material (26) for adsorbing oxygen and a desiccant material formed into a plurality of tubes (28).

The present invention relates to a method for manufacturing a carbon dioxide absorbent and to the absorbent manufactured by the method. The method comprises: (A) a step of preparing a slurry composition including a carrier composition containing a support, an inorganic binder, and a solvent; (B) a step of preparing solid particles by spray drying the thus-prepared slurry composition; (C) a step of manufacturing a carrier by dry calcining the thus-prepared solid particles; and (D) a step of receiving an amine compound into the pores of the thus-manufactured carrier. According to the absorbent of the present invention, an absorbing reaction and a regenerating reaction at a low temperature range (less than or equal to 100° C. may be conducted, and therefore, the cost for capturing CO.sub.2 in a dry capturing process may be expected to decrease.

The invention relates to a method for obtaining nanoparticulate titanium dioxide in agglomerate form from a hydrolyzed acidic titanyl compound, the thus obtained titanium dioxide as well as the use thereof as a photocatalyst, process catalyst or adsorbent, especially in aqueous systems.

An evaporated fuel processing device for processing evaporated fuel generated in a fuel tank includes a hollow case and an elastic adsorption member press-fit in the hollow case. The elastic adsorption member has a rectangular prismatic block shape. The elastic adsorption member includes an air-permeable elastic body and constituent granules of a granular adsorbent material disposed in the air-permeable elastic body. The constituent granules of a granular adsorbent material are configured to adsorb and desorb evaporated fuel.