Provided is a preparation method and use method of a material for deep purification of HF electronic gas. A metal fluoride-loaded activated carbon material AC/MFx.nH20 is prepared, and a mixed gas flow of carbonyl fluoride and high-purity nitrogen is used to deeply dehydrate the material to obtain the material for deep purification of HF electronic gas AC/MFx. This kind of material has fluoride that can form crystal water to form hydrated metal fluoride, and has strong water absorption properties. Moreover, the anhydrous fluoride and activated carbon do not have to face the problem of being corroded by HF, and the collapse of framework structure and the secondary pollution to HF from reaction products would not be caused. The material has the advantages of high purity and extremely low moisture content when being used for efficiently removing moisture in HF.

A filter media for the filtration of potable water; specifically, for the removal of arsenic from potable water using iron-impregnated activated carbon enhanced with titanium oxide, such as the titanium oxide mixture used in the commercial product Metsorb®. The activated carbon is subjected to a wet impregnation process using an iron salt solution of approximately 6% of iron(III) chloride FeCl.sub.3 solution and 1.25% of NaOH solution.

Disclosed a method for the preparation of granular sorbent based on LiCl.2Al(OH).sub.3.nH.sub.2O for lithium recovery from lithium-containing brines, comprising production of a powder of LiCl.2Al(OH).sub.3.nH.sub.2O (DHAL-Cl) from aluminum chloride solution comprising lithium, separation of the powder DHAL-Cl from the obtained solution by centrifugation with further removing the excess LiCl, drying of the powder DHAL-Cl; and, granulation of the powder DHAL-Cl with the addition of chlorinated polyvinylchloride and a organochlorine solvent to obtain the granular sorbent based on LiCl.2Al(OH).sub.3.nH.sub.2O; wherein the aluminum chloride solution comprising lithium is prepared by dissolving crystalline hydrate of hexaaqua aluminum chloride in aqueous solutions comprising lithium in the form of LiCl, Li2CO3, or LiOH.H2O or mixtures thereof, and concentration of aluminum chloride in the solution is 45-220 kg/m.sup.3.

A promoted activated carbon sorbent is described that is highly effective for the removal of mercury from flue gas streams. The sorbent comprises a new modified carbon form containing reactive forms of halogen and halides. Optional components may be added to increase reactivity and mercury capacity. These may be added directly with the sorbent, or to the flue gas to enhance sorbent performance and/or mercury capture. Mercury removal efficiencies obtained exceed conventional methods. The sorbent can be regenerated and reused. Sorbent treatment and preparation methods are also described. New methods for in-flight preparation, introduction, and control of the active sorbent into the mercury contaminated gas stream are described.

Various embodiments disclosed relate to sorbents for the oxidation and removal of mercury. The present invention includes removing mercury from a mercury-containing gas using a halide-promoted and optionally ammonium-protected sorbent that can include carbon sorbent, non-carbon sorbent, or a combination thereof.

Various embodiments disclosed relate to sorbents for the oxidation and removal of mercury. The present invention includes removing mercury from a mercury-containing gas using a halide-promoted and optionally ammonium-protected sorbent that can include carbon sorbent, non-carbon sorbent, or a combination thereof.

Devices and methods utilizing sorbent polymer composite materials in the form of at least one sheet. The at least one sheet can have a plurality of perforations that aids in the formation of an internal liquid network. In some embodiments, each perforation of the plurality of perforations has a size ranging from 0.1 mm to 6.5 mm and the at least one sheet has a perforation density ranging from 0.14% to 50% based on a total surface area of the at least one sheet.

This invention provides processes for reducing the environmental availability of one or more environmental pollutants in solids, liquids, and combinations of solids and liquids.

This invention provides processes for reducing the environmental availability of one or more environmental pollutants in solids, liquids, and combinations of solids and liquids.

Various embodiments disclosed relate to sorbents for the oxidation and removal of mercury. The present invention includes removing mercury from a mercury-containing gas using a halide-promoted and optionally ammonium-protected sorbent that can include carbon sorbent, non-carbon sorbent, or a combination thereof.