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 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.

Provided herein are methods of capturing particulates. The methods may include contacting particulates in a gas stream with one or more acoustic waves. The one or more acoustic waves may include standing waves or waves of modulating frequency. The methods may include promoting agglomeration of particulates with an electrostatic force. Also provided herein are systems for capturing particulates.

An electrostatic filter, for filtering solid and liquid particles in gases composed of a case (3); concentric collectors (15), concentric diffusers (10); electrodes (2); insulated supports (7), distributor disc (8), thermal insulator (17), electrical resistors (4), main collector (9), filter cap (1); the concentric diffusers (10) host along their internal and external wall the electrodes (2); the insulated supports connect the filter cap (1) to the distributor disc (8) which in turn supports the concentric diffusers (10); the electrical resistors (4) are located around the case (3) as clamps and are covered by the thermal insulator (17); so that the gas flows through the filter from the filter inlet (14) located tangentially at the external face of the case (3), towards the insulated outlet (5) located in the central part between the distributor disc (8) and the filter cap (1), thus optimizing the space and surface of the constituent materials and a very high filtration efficiency of liquid and solid micron particles contained in gases at any temperature up to 900 C.

An electrostatic filter, for filtering solid and liquid particles in gases composed of a case (3); concentric collectors (15), concentric diffusers (10); electrodes (2); insulated supports (7), distributor disc (8), thermal insulator (17), electrical resistors (4), main collector (9), filter cap (1); the concentric diffusers (10) host along their internal and external wall the electrodes (2); the insulated supports connect the filter cap (1) to the distributor disc (8) which in turn supports the concentric diffusers (10); the electrical resistors (4) are located around the case (3) as clamps and are covered by the thermal insulator (17); so that the gas flows through the filter from the filter inlet (14) located tangentially at the external face of the case (3), towards the insulated outlet (5) located in the central part between the distributor disc (8) and the filter cap (1), thus optimizing the space and surface of the constituent materials and a very high filtration efficiency of liquid and solid micron particles contained in gases at any temperature up to 900 C.

A gas cleaning system includes an inlet receiving a gas, an outlet spaced apart from the inlet, a gas channel defined between the inlet and the outlet to direct the gas from the inlet to the outlet, a photoionizer disposed to emit radiation towards a portion of the gas channel, and a first electrode module. The first electrode module includes a first discharge electrode assembly that generates a corona discharge within the gas channel and a first collection electrode assembly that collects ionized particles from the gas in the gas channel.

A gas cleaning system includes an inlet receiving a gas, an outlet spaced apart from the inlet, a gas channel defined between the inlet and the outlet to direct the gas from the inlet to the outlet, a photoionizer disposed to emit radiation towards a portion of the gas channel, and a first electrode module. The first electrode module includes a first discharge electrode assembly that generates a corona discharge within the gas channel and a first collection electrode assembly that collects ionized particles from the gas in the gas channel.

An air decontamination device (100) comprising: an input unit (102); an output unit (103); and a decontamination unit (104) coupled at a first end (122) to the input unit (102) and coupled at a second end (124) to the output unit (103). The decontamination unit (104) comprises: pairs of conducting plates (108), where one conducting plate of each pair is for being positively charged and the other conducting plate of each pair is for being negatively charged. The positively charged plate and negatively charged plate are separated to form an airflow path (212) and a 3D material (110) that is capable of being potentiated by static electric field is coupled to each side of conducting plate (108). When the static electric filed is applied, the surface moieties of the 3D material (110) are realigned to a direction of the static electric field to potentiate the antimicrobial activity of the 3D material (110) for destroying the microbes present in the received air.

An electrostatic filter, for filtering solid and liquid particles in gases composed of a case (3); concentric collectors (15), concentric diffusers (10); electrodes (2); insulated supports (7), distributor disc (8), thermal insulator (17), electrical resistors (4), main collector (9), filter cap (1); the concentric diffusers (10) host along their internal and external wall the electrodes (2); the insulated supports connect the filter cap (1) to the distributor disc (8) which in turn supports the concentric diffusers (10); the electrical resistors (4) are located around the case (3) as clamps and are covered by the thermal insulator (17); so that the gas flows through the filter from the filter inlet (14) located tangentially at the external face of the case (3), towards the insulated outlet (5) located in the central part between the distributor disc (8) and the filter cap (1), thus optimizing the space and surface of the constituent materials and a very high filtration efficiency of liquid and solid micron particles contained in gases at any temperature up to 900 C.

Filter media for an active field polarized media air cleaner includes two layers of dielectric material with a higher resistance air permeable screen sandwiched between the lower resistivity electric layers. The filter media may further include a mixed fiber filter layer having fibers from different sides of the triboelectric scale. The filter media may further include a layer of relatively higher density dielectric material followed by a layer of relatively lower density dielectric material.