A method of generating electricity from an amine-based acid gas capture process using an electrolytic cell containing an anode and a cathode and an amine based electrolyte comprising: contacting a metal based redox material with an amine based electrolyte in the presence of an anode to form a metal-ammine complex in solution; adding an absorbed or absorbable acid gas to the metal-ammine complex containing electrolyte to form an acid gas absorbed electrolyte; and contacting the acid gas absorbed electrolyte with a cathode deposit, wherein the acid gas breaks up the metal-ammine complex in the metal-ammine complex containing electrolyte thereby generating a potential difference between the anode and the cathode.

Embodiments of a self-sustainable solid oxide fuel cell (SOFC) system for powering a gas well comprise a first SOFC comprising a first cathode, a first anode, and a first solid electrolyte; a second SOFC comprising a second cathode, a second anode, and a second solid electrolyte; SO.sub.2 removal equipment; a combustion circuit comprising a combustor and a circulating heat carrier in thermal connection with the combustor, the first SOFC, and the second SOFC; and one or more external electric circuits. The first anode comprises a first oxidation region configured to produce SO.sub.2 and electrons. The second anode comprises a second oxidation region configured to electrochemically oxidize CH.sub.4 to produce syngas and electrons and electrochemically oxidize H.sub.2 to produce H.sub.2O and electrons. The external electric circuits are configured to generate power from the electrons produced in both the first SOFC and the second SOFC.

The invention provides the use of hydroxide ions as a heat source in a CO.sub.2 absorption process.

A gas adsorption system includes a plurality of gas adsorption units each including an electrochemical device configured to adsorb and release a predetermined gas. The plurality of gas adsorption units include: a first adsorption unit to which the predetermined gas is supplied; and a second adsorption unit to which the gas having passed through the first adsorption unit is supplied.

Plasma is generated in a gas phase in a processing tub to produce a reforming component, the produced reforming component is dissolved in a liquid and is dispersed in the liquid to produce a reforming liquid, the produced reforming liquid is discharged from the processing tub to be stored in the storage tub, and gas is supplied from a gas supplier into the reforming liquid in the storage tub. The supplied gas has a bubble shape, comes into contact with the reforming liquid stored in the storage tub, and is deodorized.

A gas-liquid contactor for capturing carbon dioxide (CO.sub.2) from ambient air includes a flow system comprising: a top basin containing a CO.sub.2 capture solution, and a liquid distribution pipe in fluid communication with a turbine nozzle. A pump flows the CO.sub.2 capture solution to the turbine nozzle to emit a pressurized flow of the CO.sub.2 capture solution. A hydraulic fan comprises a shaft, a hydraulic turbine mounted to the shaft, and fan blades mounted to the shaft. The fan blades are positioned adjacent to an outlet, and the hydraulic turbine is positioned adjacent to the turbine nozzle and rotates upon the pressurized flow of the CO.sub.2 capture solution from the turbine nozzle impacting the hydraulic turbine. Rotation of the hydraulic turbine causes rotation of the fan blades, circulation of the ambient air through an inlet and circulation of a CO.sub.2-lean gas through the outlet. Related systems and methods are disclosed.

The present disclosure relates to electrochemical target species (e.g., carbon dioxide) capture and release with a redox-active amine. Associated systems and articles are also described.

The invention is in the field of CO.sub.2 capture. In particular the invention relates to a method for capturing CO.sub.2 from a CO.sub.2-containing feed gas stream, wherein the method comprises at least partially removing dissolved transition metal ions by electrodeposition. The invention further relates to a system for the method.

A system for producing gas streams for use in synthetic fuel production through CO2 capture and water splitting is disclosed. The system includes a CO2 capture device configured to receive a CO2-containing stream and including an aqueous alkaline solution. The alkaline solution includes hydroxide and/or carbonate ions. The CO2 capture device generates a carbon-rich solution when the alkaline solution absorbs CO2. The carbon-rich solution includes carbonate and/or bicarbonate ions. The system also includes an electrolyzer fluidically coupled to the CO2 capture device, and defining a volume including an anode region having an anode, and a cathode region having a cathode. The volume includes an electrolyte solution having a pH gradient generated by an electric current, causing the electrolyte solution to be acidic in the anode region and alkaline in the cathode region. The carbon-rich solution is received into the electrolyzer. The electrolyzer generates hydrogen, oxygen, and CO2 streams.

Apparatuses, systems, and methods related to removing carbon dioxide from a gas stream are provided. Gas streams can be waste gas streams or natural gas streams. The systems and methods for removing carbon dioxide incorporate water repurposing schemes. Still others are disclosed.