The present invention relates to spherical agglomerates based on zeolite(s) and clay(s), having controlled size and morphology, in particular a size of less than or equal to 600 μm, very good sphericity, and a high content of zeolitic material, to the process for the production thereof. These agglomerates are particularly suitable for uses in gas-phase and/or liquid-phase adsorption processes.

A gas concentration apparatus and a method of operating the gas concentration apparatus are provided. The gas concentration apparatus includes a gas concentration module. The gas concentration module includes a base component having a chamber configured to accommodate carbon foam, a gas inlet connected to one side of the chamber, a gas outlet connected to the other side of the chamber, and a heating device disposed on at least one side of the substrate.

Adsorbent materials comprising a core, for example CHA, and at least one coating, for example DDR, are provided herein. Adsorbent contactors and gas separation processes using the adsorbent materials are also provided herein.

Disclosed is an improved process for recovering condensable components from a gas stream, in particular, hydrocarbons from a gas stream such as natural gas. The present process uses solid adsorbent media to remove said hydrocarbons wherein the adsorbent media is regenerated in a continuous fashion in a heated continuous counter-current regeneration system, wherein said heated regenerated adsorbent media is cooled prior to reuse.

A filter medium is provided with a layer (A) provided with non-impregnated active carbon, a layer (B) with a solid carrier material that is impregnated with a permanganate salt, and a layer (C) with alkaline impregnated active carbon. The layer (B) and the layer (C) are arranged such that a gas flowing through the filter medium flows through the layer (B) before flowing through the layer (C). The layer (A) is arranged such that the gas flowing through the filter medium flows through the layer (A) before flowing through the layer (B) or the gas flowing through the filter medium flows through the layer (A) after flowing through the layer (C).

Filter media and filters for the sequestration of carbon dioxide are disclosed. The carbon dioxide sequestering filter media incorporate silicate minerals, and the carbon dioxide sequestering filters incorporate carbon dioxide sequestering filter media. Filters using only carbon dioxide sequestering media and filters combining carbon dioxide sequestering media with traditional air filter media are disclosed. The carbon dioxide sequestering filters may be used instead of traditional air filters in residential, commercial and industrial applications.

The present invention relates to an adsorbent comprising an alumina support and at least one alkali element, said adsorbent being obtained by introducing at least one alkali element, identical to or different from sodium, onto an alumina support the sodium content of which, expressed as Na.sub.2O equivalent, before the introduction of the alkali element or elements, is comprised between 1000 and 5000 ppm by weight with respect to the total weight of the support. The invention also relates to processes for the preparation of said adsorbent and use thereof in a process for the elimination of acidic molecules such as COS and/or CO.sub.2.

A method for producing a fluorinated carbon adsorbent which involves digesting rice husk, sulfonating the digested rice husk, and fluorinating the sulfonated rice husk. The method yields a fluorinated carbon adsorbent material having an adsorption capacity for CO.sub.2 of 1.6 to 2.5 mmol/g, an adsorption capacity for CH.sub.4 of 0.4 to 0.8 mmol/g, and an adsorption capacity for N.sub.2 of 0.1 to 0.4 mmol/g, at a temperature of 273 to 298 K and a pressure of 0.75 to 1.5 atm. Also disclosed is a method for separating a mixture of gases using the fluorinated carbon adsorbent.

A system and method for the simultaneous sequestration of CO2, production of hydrogen, and production of electricity at any iron and steel industries is described. In one illustrative example, the raw materials particularly used in a blast furnace can also be used for locking CO2 gas in the form of siderite. Siderite, thus formed, can be decomposed to generate pure CO2 gas. Eventually, the generated pure CO2 gas can be sequestered underground, sold or used for oil gas recovery or for other applications.

Disclosed herein is a system for purifying air; for the capture of solid residues (soot), and the transformation of CO.sub.x and NO.sub.x (and even methane) present in contaminated air generated by industrial combustion.

The purifying air system comprises an air entrance (c); a first module (A), made up of mechanical filters; a second module (B), downwards from the first module (A), and it corresponds to a series of small reactors with molecular converters (nucleophile chemical agents) to capture and transform carbon oxides (CO.sub.x) and nitrogen oxides (NO.sub.x); and an exit for decontaminated air (D).