A process for capturing sulphur impurities present in gas feeds containing H.sub.2 and/or CO: a. desulphurization with a retaining material containing an active phase, b. optionally, rendering the sulphurized retaining material inert, c. oxidative regeneration of the retaining material, d. optionally, rendering the regenerated retaining material inert, and e. desulphurization with the retaining material that has been regenerated and rendered inert, and regenerating the retaining material.

An oxygen adsorbent which can be manufactured at a low cost, and an oxygen manufacturing equipment and an oxygen manufacturing method which are capable of producing oxygen-enriched gas at a low cost by using the oxygen adsorbent are provided. The oxygen adsorbent comprises at least an oxide of a perovskite structure. The oxide is represented by a compositional formula of Sr.sub.1xCa.sub.xFeO.sub.3, wherein 0.12x0.40, 00.5 Since this oxide does not include La and Co included in a conventional oxygen adsorbent, it can be manufactured at a low cost.

The invention relates to devices, systems, and methods for recharging zirconium phosphate in a reusable zirconium phosphate sorbent module. The devices, systems, and methods provide for customization of the zirconium phosphate effluent pH based on the needs of the user and system. The devices systems and methods also provide for calculation of the volumes of recharge solution needed for fully recharging the zirconium phosphate modules.

A heat transfer fluid can be used as part of a multi-phase adsorption environment to allow for improved separations of gas components using a solid adsorbent. The heat transfer fluid can reduce or minimize the temperature increase of the solid adsorbent that occurs during an adsorption cycle. Reducing or minimizing such a temperature increase can enhance the working capacity for an adsorbent and/or enable the use of adsorbents that are not practical for commercial scale adsorption using conventional adsorption methods. The multi-phase adsorption environment can correspond to a trickle bed environment, a slurry environment, or another convenient environment where at least a partial liquid phase of a heat transfer fluid is present during gas adsorption by a solid adsorbent.

The invention relates to a gas treatment monolith article, said gas treatment article comprising: a full body porous material comprising a porous substrate and an aluminium oxide coating homogeneously distributed throughout said porous substrate, wherein said porous substrate is a fibrous material; and at least one acid gas absorption active component or a precursor thereof impregnated into said porous aluminium oxide coated substrate. The invention further relates to uses of the gas treatment monolith article of the invention.

The present invention relates to a stabilized inorganic oxide support for capturing carbon dioxide from gases having high regeneration capacities over many cycles. The method for preparing the stabilized inorganic oxide support includes stabilizing an alumina-containing precursor by either calcining or steaming, impregnating an alkali or alkaline earth compound into the stabilized alumina-and drying the alkali or alkaline earth compound-impregnated stabilized alumina-. The stabilized inorganic oxide support can be regenerated at lower temperatures between 100 and 150 C. The carbon dioxide adsorption capacity of the regenerated support is between 70 and 90% of the theoretical carbon dioxide adsorption capacity.

A method of water decontamination includes contacting sulfur-doped silver tungstate (Ag.sub.2WO.sub.4) nanoparticles with an aqueous solution to form a mixture. The aqueous solution includes one or more pollutants. The method further includes mixing the mixture and collecting a filtrate. The filtrate has fewer of the one or more pollutants than the aqueous solution. The amount of sulfur present in the sulfur-doped Ag.sub.2WO.sub.4 nanoparticles is in a range from 5% to 30% of the total weight of the sulfur-doped Ag.sub.2WO.sub.4 nanoparticles, and the sulfur-doped Ag.sub.2WO.sub.4 nanoparticles are spherical particles with diameters ranging from 2 nanometers (nm) to 40 nm.

Provided is nanostructured sand, a process for producing same, a process for separating a pollutant-water mixture, and uses of the nanostructured sand.

Disclosed is an improved process for recovering condensable components from a gas stream, in particular, heavier hydrocarbons from a gas stream. The present process uses solid adsorbent media to remove said heavier hydrocarbons wherein the adsorbent media is regenerated in a continuous fashion in a continuous adsorbent media co-current regeneration system using a stripping gas to provide a regenerated adsorbent media and a product gas comprising heavier hydrocarbons from a loaded adsorbent media.

A process for extracting a surfactant from a mixture using a boronic acid modified material.