An apparatus for forming a C1 to C5 oxygenate from carbon dioxide and a C1 to C4 hydrocarbon is described. The apparatus comprises: a dielectric barrier discharge, DBD, device arranged to generate a plasma; and a passageway having an inlet for the carbon dioxide and the C1 to C4 hydrocarbon and an outlet for the oxygenates. In one example the passageway includes therein a catalyst. The passageway extends, at least in part, through the DBD device wherein, in use, the carbon dioxide in reacted with the C1 to C4 hydrocarbon in the generated plasma, thereby forming the oxygenates from at least some of the carbon dioxide and the C1 to C4 hydrocarbon. The DBD device comprises a conducting liquid as a ground electrode. A method and a use are also described.

A microwave-plasma system for generating fixed-nitrogen products comprises a microwave generator operably coupled with a gas chamber where the microwave generator provides microwave power to the gas chamber. The system further includes a source of gas, which may be for example oxygen, nitrogen and/or air, operably coupled with the plasma chamber. The microwave power produces a plasma of the gas within the chamber. The system further includes an absorber unit fluidically connected to the gas chamber to capture product from the plasma in the gas chamber. The captured product may include fixed nitrogen gaseous products.

Described are a low temperature plasma reaction device and a hydrogen sulfide decomposition method. The reaction device includes: a first cavity; a second cavity, the second cavity being embedded inside or outside the first cavity; an inner electrode, the inner electrode being arranged in the first cavity; an outer electrode; and a barrier dielectric arranged between the outer electrode and the inner electrode. The hydrogen sulfide decomposition method includes: implementing dielectric barrier discharge at the outer electrode and the inner electrode of the low temperature plasma reaction device, introducing a raw material gas containing hydrogen sulfide into the first cavity to implement a hydrogen sulfide decomposition method, and continuously introducing a thermally conductive medium into the second cavity in order to control the temperature of the first cavity of the low temperature plasma reaction device.

The embodiments disclosed herein are directed to systems, methods, and devices for producing materials having desired characteristics using microwave plasma. In some embodiments, performing an iterative process may be used to produce a material having desired characteristics, the process comprising forming a microwave plasma within the reaction chamber, analyzing the plasma to determine if properties of the plasma are within a range expected to produce the desired characteristics of the material; and adjusting, based on the analysis of the plasma, one or more parameters. In some embodiments, an extension tube is provided within a microwave plasma apparatus to extend the length of a microwave plasma.

An apparatus for generating cold air plasma includes a housing including a plurality of spaced openings; a plurality of needles, each needle being positioned in a respective opening; and a driver circuit that generates an electrical signal that is applied to the needles to generate a pulsed electromagnetic field (PEMF), wherein the electrical signal is alternating at a carrier frequency and is modulated at a pulse frequency to thereby generate cold air plasma. A method for providing therapy to a subject includes generating cold air plasma using an apparatus including: a) a housing including a plurality of spaced openings; b) a plurality of needles, each needle being positioned in a respective opening; and c) a driver circuit that generates an electrical signal that is applied to the needles to generate a pulsed electromagnetic field, wherein the electrical signal is alternating at a carrier frequency and is modulated at a pulse frequency to thereby generate cold air plasma.

Apparatus and systems describe a plasma source to generate cold plasma solution for use in hospital, home, office, and other locations. The plasma source employs air, gas, and/or vapor discharging in a high voltage electric field, which interact to obtain plasma solution for oral health. The plasma source may include power supply, plasma generator, liquid container, liquid aerosolizer/vaporizer or liquid disturber, reservoir, collector, and intelligent control center.

An airflow generation device having a first dielectric substrate made from a rubber elastic material, a first electrode on or near by a first surface of the first dielectric substrate, a second electrode on a second surface, and a second dielectric substrate made from a rubber elastic material covering the second electrode. It makes the airflows generated by plasma caused from partial gas near by the first surface through applied voltage into the first electrode and the second electrode, and bonding portions between the first electrode and the second electrode and the first dielectric substrate, bonding portions between the second electrode and the second dielectric substrate, and bonding portions between the first dielectric substrate and the second dielectric substrate are bonded by chemical bonds with chemically crosslinking.

A plasma carbon sequestration system and method are disclosed, wherein in the plasma carbon sequestration system, a first channel and a second channel of a plasma reactor are each provided with a flow controller, the plasma reactor is connected to a high voltage via a high voltage electrode and grounded via a ground electrode, water, or hydrogen, or methane is mixed with carbon dioxide respectively, to be introduced into the plasma reactor in a predetermined proportion under the control of the flow controllers, and a condenser is connected to the plasma reactor to condense a conversion product, and reactants which are not completely reacted from the plasma reactor, and is selectively used for circulation in the plasma reactor, thereby realizing environment-friendly treatment without a catalyst by a room temperature plasma technology.

Devices suitable for use in an advanced oxidation method for organic and inorganic pollutants deploying OH* radicals and ozone is disclosed. Optionally, a first discharge device, providing OH* radicals and second discharge device providing ozone, are combined to provide desirable chemical and biocidal characteristics. Further, efficient mixing systems for transferring the radicals to the target fluid are disclosed.

Aspects of the present disclosure involve a gliding-arc type plasma reactor for use in nitrogen-based fertilizer production. The plasma reactor may include a pair of electrodes oriented in a plane within an enclosure. A pair of sheaths may attach to a corresponding electrode, with each included a strike point surface oriented to face the other sheath. The electrodes may further include an inner channel through which a cooling fluid may be pumped for heat control. A gas injection system may also be included to inject a gas into the chamber for interacting with the plasma arc and may or may not include an adjustable nozzle. The nozzle may direct air flow, including the gas, at a location at which the plasma arc may occur. The device provides for a long lifetime of components within the device and easy replacement and maintenance of the components of high-wear items.