A system for regenerative carbon dioxide (CO2) removal in spacecraft cabin environmental conditions is described. Metal organic framework (MOF) adsorbents are integrated onto an oxide coated support material, such as a thin sheet or wire/wire mesh and implemented in an open-channel architecture. The support material may be titanium having an oxide surface layer that comprises titanium dioxide (TiO2) nanotubes. These structures provide a relatively large surface area for hosting MOF adsorbents. An integrated titanium support structure with MOFs may be more energy efficient and have greater flexibility in gas (e.g., air) flowrate as compared to traditional configurations of a packed bed reactor containing a pelletized form of adsorbent, such as zeolite.

A method of regenerating spent aqueous solvent using microwave absorbers featuring: adding a microwave absorber to a spent CO.sub.2 solvent solution, forming a mixture of microwave absorber material dispersed in the spent CO.sub.2 solvent solution, wherein the spent CO.sub.2 solvent solution is an aqueous solution of spent CO.sub.2 sorbent, wherein spent CO.sub.2 sorbent is a CO.sub.2 sorbent with CO.sub.2 absorbed thereon; and exposing the mixture to microwaves, resulting in desorption of absorbed CO.sub.2 from the CO.sub.2 sorbent, regenerating CO.sub.2 sorbent. A system for regenerating spent aqueous solvent having: a mixture having: an aqueous solution of a spent CO.sub.2 sorbent, wherein the spent CO.sub.2 sorbent is a CO.sub.2 sorbent with CO.sub.2 absorbed thereon; and a microwave absorber material mixed in the aqueous solution of spent CO.sub.2 sorbent, wherein the microwave absorber material is an electrical insulator that is configured to be polarized by an applied electric field.

Method(s) and system(s) for the direct production of lithium and other metals from a brine solution containing salts of various metal cations at room temperature via a combined sorbent extraction and electrochemical extraction/plating process. This process uses a skeleton structure material that can reversibly insert/extract a desired metal cation to absorb the desired metal ions from a brine solution. The metal impregnated skeleton structure material is then transferred to an electrochemical cell where the metal ions are extracted from the structure and plated in the form of metal onto an electronically conductive substrate. This process is a combination of methods to take metal ions directly from a brine solution to produce an end-product of metal and is a significant improvement over current industrial processes that will reduce the energy required for metal production.

The invention relates to a method for regenerating at least a portion of the adsorbent medium of at least one adsorption reactor implemented in a unit for treating a fluid, said regeneration method being carried out on the site of use of the adsorption reactor and comprising: at least one step of removing at least a portion of the adsorbent medium from said at least one adsorption reactor, and at least one chemical regeneration step comprising a step of bringing said portion of adsorbent medium into contact with a regeneration solution comprising water and sodium hydroxide.

The invention also relates to a fluid-treatment method implementing the regeneration method, as well as to a fluid-treatment plant suitable for carrying out the fluid-treatment method according to the invention.

A compound represented by Formula (1): each of L.sup.1 and L.sup.2 independently represents an alkyl group having from 1 to 20 carbon atoms, an alkoxy group having from 1 to 20 carbon atoms, NH.sub.2, NHR.sup.3, NR.sup.3R.sup.4, an ester group, a carboxy group, an amide group, a cyano group, a nitro group, a halogen atom, an acyl group, CF.sub.3, O(CH.sub.2).sub.lOCH.sub.3, a carbamate group, or an aryl group. l represents 1 or 2. Each of R.sup.1 and R.sup.2 independently represents a divalent hydrocarbon group having from 1 to 10 carbon atoms, at least one hydrogen atom of the divalent hydrocarbon group is optionally substituted with an alkyl group, an aryl group, an ester group, a carboxy group, an amide group, a cyano group, a nitro group, a halogen atom, an acyl group, CF.sub.3, O(CH.sub.2).sub.lOCH.sub.3, a carbamate group, or an alkoxy group, each of R.sup.3 and R.sup.4 independently represents an alkyl group, an aryl group, an acyl group, an ester group, an alkylsulfonyl group, or an arylsulfonyl group, each of R.sup.5 and R.sup.6 independently represents a hydrogen atom, an alkyl group having from 1 to 20 carbon atoms, or an aryl group, and n+m1.

The invention relates to a process, catalysts, materials for conversion of renewable electricity, air, and water to low or zero carbon fuels and chemicals by the direct capture of carbon dioxide from the atmosphere and the conversion of the carbon dioxide to fuels and chemicals using hydrogen produced by the electrolysis of water.

A method of recovering desalinated activated alumina (AA) beads from a composition including salt laden (high salt absorbed) activated alumna (AA) beads and free anions and free cations, comprising the step of electrodialysis of the composition to reduce salt content of the activated alumina (AA) beads to produce a stream comprising the desalinated activated alumina (AA) beads.

The invention relates to membranes for separation, removal, and/or concentration purposes. The object of the invention is the simple and reliable adsorption of the molecules and to simplify the desorption of target molecules that are adsorbed and chromatographically bonded on membranes, preferably without the addition of substances with a high ion content, such as acids, alkalis or salts. The object of the invention is also to develop a value that can be easily measured, which allows for an indication of the current and/or remaining binding capacity of the membrane during the adsorption process and/or the control thereof. The adsorption takes place on a charged membrane and desorption is achieved using physical, electromagnetic and/or the generation of electrical fields. This is carried out with a thin metal layer being applied to one or both sides of a positively or negatively charged membrane and a voltage is applied for desorption.

A hydrocarbon trap to be used in the adsorption of hydrocarbons contained in the exhaust gas of an internal combustion engine is provided in which a hydrocarbon adsorbing material is supported on a surface of pores of a porous substrate, the hydrocarbon adsorbing material comprises a first zeolite capable of adsorbing olefin contained in the exhaust gas, and a second zeolite capable of adsorbing paraffin and aromatic compound contained in the exhaust gas, the first zeolite adsorbs the olefin in a first temperature range, and desorbs the olefin in a second temperature range which has higher temperature than the first temperature range, and the second zeolite desorbs the paraffin and the aromatic compound in the first temperature range, and adsorbs the paraffin and the aromatic compound in the second temperature range.

A device for regenerating materials using a plasma field. The device includes a flow unit configured to flow a gas or a liquid and a plasma unit coupled to the flow unit and including a plurality of electrodes and a sorbent bed having a sorbent material. The plasma unit is configured to receive the flow of the gas or liquid from the flow unit so that the gas or liquid flows through the sorbent material and a predetermined chemical species in the gas or liquid is adsorbed or absorbed by the sorbent material. The device also includes a power source providing a power signal to one or more of the electrodes. The electrodes are configured so that the power signal generates a plasma field in the sorbent material that causes the adsorbed or absorbed chemical species to desorb from the sorbent material.