The present inventors have developed systems and processes for reducing the overall carbon consumption needed for the generation of low COD treated water. In certain aspects, the systems and processes described herein include an oxidation stage (e.g., one that utilizes ozone, hydrogen peroxide, ultraviolet, or a combination thereof for oxidation) between a first activated carbon stage and a second activated carbon stage to reduce a total carbon consumption within the associated system or process.

Disclosed in certain embodiments are sorbents for capturing heavy hydrocarbons via thermal swing adsorption processes.

The present invention relates to metal-organic framework characterized in that it comprises a polymer coating; further the invention relates to a process for the preparation of said polymer-coated metal-organic framework and a process for recycling after degradation. The polymer coated MOFs of this invention find application in a broad range of technologies and therapeutic areas.

Disclosed is a fire suppressant material for controlling or extinguishing a combustion process, the fire suppressant material comprising zeolite particles with an internal porous structure, wherein molecules of a fire extinguishing substance are contained within the internal porous structure of the zeolite material.

The present disclosure describes the use of a specific adsorbent material in a rapid cycle swing adsorption to perform dehydration of a gaseous feed stream. The adsorbent material includes a zeolite 3A that is utilized in the dehydration process to enhance recovery of hydrocarbons.

The present disclosure relates to a process, a system and a use for removing micropollutants (1) in liquid (2). The process comprises providing liquid (2) to a container (3) adapted to hold a liquid and/or a gas, providing magnetic activated carbon (4), mixing it, separating the magnetic activated carbon (4) using a magnetic separator (5), removing between 1 and 100% of the separated used magnetic activated carbon (4), removing the liquid (2), providing new liquid (2) to the container (3), providing the used magnetic activated carbon (4) to the container (3), adding between 1 and 100% of unused magnetic activated carbon (4), repeating the mixing and separation steps at least one time. The process allows for control of several parameters, such as the flow rate of the liquid, dosage of MAC and ratio used/unused MAC required to remove micropollutants from the liquid.

A hydrogen feed stream comprising oxygen and one or more impurities selected from the group consisting of nitrogen, argon, methane, carbon monoxide, carbon dioxide, and water, is purified using a cryogenic temperature swing adsorption (CTSA) process with high overall recovery of hydrogen. The CTSA is regenerated using an inert gas to prevent an explosive mixture of hydrogen and oxygen from occurring.

An example method of removing hydrogen sulfide from an input gas includes exposing an adsorbent material to an input gas to obtain an output gas. A concentration of hydrogen sulfide of the output gas is less than a concentration of hydrogen sulfide of the input gas. The adsorbent material includes copper oxide, magnesium oxide, and aluminum oxide. An atomic ratio of copper to magnesium to aluminum of the adsorbent material is X:Y:Z, where X is greater than or equal to 0.6 and less than or equal to 0.9, where Y is greater than or equal to 0 and less than or equal to 0.2, where Z is greater than or equal to 0 and less than or equal to 0.2, and where X+Y+Z is equal to 1.

A method of treating a metal carbonate salt includes hydrolyzing a metal halide salt to form a hydrohalic acid and a hydroxide salt of the metal in the metal halide salt. The metal includes an alkaline earth metal or an alkali metal. The method includes reacting the hydrohalic acid with the metal carbonate salt, wherein the metal carbonate salt is a carbonate salt of the alkaline earth metal or alkali metal, to form CO.sub.2 and the metal halide salt. At least some of the metal halide salt formed from the reacting of the hydrohalic acid with the metal carbonate salt is recycled as at least some of the metal halide salt in the hydrolyzing of the metal halide salt to form the hydrohalic acid and the hydroxide salt.

The invention relates to a method for removing polyfluorinated organic compounds from water by means of an adsorbent and to the regeneration of the latter. According to the invention, at least one zeolite is used as an adsorbent, which is brought into contact with the water and is then regenerated by wet-chemical oxidation, wherein the oxidation is carried out by means of UV irradiation and/or at a pH in the range from pH 2.5-7.5.