A method is described for reducing contrails during operation of an aircraft (100, 100) having a heat engine 10. The method includes inducing a condensation of moisture contained in the exhaust gas (A) of the heat engine by mixing at least a portion of the exhaust gas with ambient air (U) of the aircraft as well as separating the condensed-out water on the aircraft. Also described is an aircraft (100, 100) having a heat engine (10). The aircraft includes at least one nozzle (30) which is adapted for conducting exhaust gas (A) from the heat engine of the aircraft at least partially into ambient air (U) of the aircraft and thus to produce a gas mixture, and at least one separator device (40) for separating condensed-out water from the gas mixture.

An electric discharge plasma device for treating waste fluid comprises: (a) at least one optical arrangement further comprising a laser source generating a laser radiation beam propagatable into a flow of the waste fluid and a laser beam distributor which spatiotemporally distributes the laser radiation beam within the flow such that a cloud of ionized gases containing electrically charged particles is created; and (b) an energizing arrangement transferring energy to the ionized gases containing electrically charged particles such that at least one of the following products an ionized gas, an oxidized contaminant, an ozone gas is generated.

An ionization device may be configured to be portable, and to rest on a surface such as a floor or desk top. The ionization device includes an air-intake port, an ion generator, an ozone catalyst for removing at least some ozone from air, and an air discharge. Air enters the device through the air-intake port, and at least some of the air is ionized to remove particulates. The air is then moved past or through the ozone catalyst to remove at least some of the ozone from the air. A controller may be used to monitor particulates, temperature, humidity, and/or other relevant factors and/or to adjust the ionization level.

The instant invention is based on techniques for using non-thermal plasma reactors in both the main exhaust pipe and in the exhaust gas recirculation feed pipe to reduce particulate matter sufficiently to meet EPA limits for PM and enhanced exhaust gas recirculation to meet NOx limits. More specifically, it is based upon the use of a non-thermal plasma device in which a high voltage charge in the plasma reactor causes extremely rapid oxidation of soot particles in the exhaust stream of an engine and further chemical reactions that aid in the reduction of NOx. The primary benefit of this technology is that it can be calibrated to optimize both soot and NOx reduction.

Systems and processes for reducing carbon capture emissions are described. The process involves introducing a radical species into a decarbonized combustion gas. The radical species react with residual amines or unwanted compounds in the decarbonized combustion gas, thus reducing the concentration of residual amines or unwanted compounds in the exhaust gas. The system includes a carbon capture absorber with non-thermal plasma generator configured to provide radical species reducing the concentration of residual amines or unwanted compounds in the exhaust combustion gas.

A plasma electrode device, a method of manufacturing plasma electrode device, and an air conditioner are provided. The plasma discharge device may include an insulating body; a discharge electrode formed in a first surface of the insulating body to generate plasma discharge; and a ground electrode formed in a second surface of the insulating body to generate plasma discharge by reacting with the discharge electrode. The discharge electrode may have a prescribed pattern having a plurality of branches, and the insulating body may include a flexible material configured to be curved at a predetermined curvature.

Embodiments of point-of-use (POU) abatement device and methods of abating a plurality of gas streams from a corresponding plurality of processing chambers are provided herein. In some embodiments, a compact POU abatement device includes a plurality of inlets respectively coupled to a plurality of process chambers in which each of the process chambers gas streams is isolated from the other gas streams. In some embodiments, the compact POU abatement device can include a plurality of oxidation devices and a corresponding plurality of wet scrubber columns each directly coupled to ones of the plurality of inlets to receive a gas stream from a corresponding process chamber.

An exhaust-gas treatment apparatus capable of efficiently making a harmful gas containing in an exhaust gas harmless without increasing a size of the apparatus is disclosed. The exhaust-gas treatment apparatus includes a main body in which a flow passage is formed for a liquid to flow, an exhaust-gas supply line to be coupled to the main body, and for supplying the exhaust gas to the flow passage through which the liquid flows, a suction device configured to suck the exhaust gas from the exhaust-gas supply line into the flow passage, a low-temperature plasma generator for generating low-temperature plasma in the flow passage to decompose the harmful gas, and a discharge line for discharging the exhaust gas, which has passed through the low-temperature plasma generator, from the main body.

Apparatus comprising: a fumehood; and an air treatment device for purging unwanted substances from the exhaust air of the fumehood, the air treatment device comprising: a non-thermal plasma reactor stage for producing air byproducts comprising O., N., OH. and O.sub.3 and introducing those air byproducts into the exhaust air of the fumehood so as to treat the exhaust air of the fumehood; and a catalyst stage downstream of the non-thermal plasma reactor stage for further treating the air downstream of the non-thermal plasma reactor stage.

Provided is an electrostatic dust filter including a frame that is opened back and forth and forms a space through which air passes, a chemical absorbent that is accommodated in the space and absorbs harmful substance in the air, a mesh member that covers the front of the frame and has a plurality of pores through which the air passes, a ground electrode that covers the rear of the frame and has the plurality of pores through which the air passes, and is grounded, and a voltage electrode that is disposed to opposite to the ground electrode with respect to the mesh member and applied with a high voltage.