The disclosure provides devices, methods, and systems for treating reactive metals and other reactive species produced during operation of thermal solid-state gas generators. Thermal energy, which may be derived from the gas generation process, physical contact with the evolved gases, or a dedicated or shared heat source, is used to release a gaseous species that neutralizes the reactive species. In some embodiments, the neutralization reaction causes the release of additional product gas(es).

An ambient oxygen concentrating torch has an oxygen concentrating unit disposed in operational communication with a second compressor whereby oxygen is sourced from the ambient atmosphere by Pressure Swing Adsorption and producible for pressurization and storage interior to a pressure tank. Controlled release of the stored oxygen is thereby enabled for combination with a hydrocarbon to effect combustion and production of a high-temperature flame as used in welding and cutting. Because oxygen is sourced from the ambient environment, and is continuously producible therefrom, need of separate oxygen canisters is entirely obviated.

Disclosed herein are systems and methods for treating air.

A material for removing a contaminant, the material including an adsorption material for adsorption of a contaminant and a decomposition material for decomposition of a contaminant, wherein the adsorption material and the decomposition material are complexed with each other, and a contaminant decomposition onset temperature of the decomposition material is equal to or lower than a contaminant desorption onset temperature of the adsorption material.

In various embodiments, methods of treating a space to reduce a concentration of volatile organic compounds present in the space using chlorine dioxide are provided. A method can include application of aqueous and gaseous chlorine dioxide solutions within the space or to materials located within the space. Treatment of materials that emit volatile organic compounds with chlorine dioxide can reduce the emission rate or shorten the volatile organic compound emission cycle of the material. Soft surface substrates such as carpeting materials can be treated with chlorine dioxide to reduce volatile organic compound emission and/or to reduce the number of microorganisms present in the material.

A scrubbing assembly for treating malodorous air by chemical scrubbing one or more chemical components from an influent airflow, particularly one or more chemical components that have become airborne from chemical intervention solutions used during food processing, such as vapors from peroxycarboxylic acid solutions used during food processing. The peroxycarboxylic acid vapors are removed from air in a continuous manner within the scrubber assembly utilizing a neutralizing chemical solution to provide a treated effluent airflow that can be returned back to the point of use area from which the malodorous air was removed for treatment.

The invention provides a method for extraction of at least one extract compound from a material, comprising: a. contacting carbon dioxide with the material to dissolve an amount of the at least one extract compound from the material into the carbon dioxide; b. contacting the carbon dioxide comprising the at least dissolved extract compound with a sorbent to sorb the at least one extract compound onto the sorbent and for regenerating the carbon dioxide; c. recirculating the regenerated carbon dioxide; and d. repeating said recirculating at a constant density of said carbon dioxide of between 100 and 1000 kg/m.sup.3, and repeating said recirculating for at least 10 cycles.

Provided is a novel exhaust gas processing device which allows processing target exhaust gas having a large flow volume to be handled with a small-capacity plasma generator, by preheating a high-temperature decomposable gas component of the processing target exhaust gas. An exhaust gas processing device 10 preheats processing target exhaust gas F in the presence of moisture with heat from at least either an electric heater 15 or a heat exchanger 17 and subsequently thermally decomposes the exhaust gas with an atmospheric pressure plasma P. A device main body 11 has a heating decomposition chamber T therein. A plasma generator 14 is of a non-transferred type and is installed at a top surface portion 11a of the device main body 11. A reactor 12 has a cylindrical shape and is installed within the device main body 11 such that an upper end opening 12i thereof is directed toward a plasma emission port 14f of the plasma generator 14. A moisture supply unit 18 is provided at an inlet side of the device main body 11. At least either the electric heater 15 or the heat exchanger 17 is disposed in a first space T1.

A carbonator reactor includes a cylindrical body, a nozzle for supplying a gas stream, inside the carbonator reactor and above the surface of a liquid phase and where the nozzle is located at the top of the reactor body, an inlet, an outlet, means for regulating the temperature and the pressure, a stirring system and at least one baffle regulating the stirring of the liquid phase and the mass transfer of the gas into the liquid surface, at least one impeller having inclined blades that make an angle from 5° to 60° with respect to the vertical axis. The reactor prepares sodium carbonate and has a configuration for the mass transfer of a gas phase in a liquid phase. A method for the preparation of sodium carbonate by means of the carbonator reactor by capturing CO.sub.2 in an NaOH aqueous solution, directly on the free surface of the liquid phase.

A system for reducing the release of hydrocarbons emitted from a hydrocarbon source into the atmosphere includes a hydrocarbon supply conduit configured to receive the emitted hydrocarbons. In addition, the system includes an air supply conduit coupled to an air source. Further, the system includes a combustion device coupled to an outlet end of the hydrocarbon supply conduit and an outlet end of the air supply conduit. The combustion device is configured to receive the hydrocarbons from the hydrocarbon supply conduit and the air from the air supply conduit, and combust the hydrocarbons. Still further, the system includes a catalytic converter spaced apart from the combustion device and a transfer conduit extending from an outlet of the combustion device to an inlet of a catalytic converter. The catalytic converter is configured to receive the combustion products and any un-combusted hydrocarbons from the transfer conduit, and oxidize the un-combusted hydrocarbons.