A compact, portable, low-cost electrostatic bioaerosol sampler device is provided for collection of aerosolized biological and non-biological particles. The device may be used for long-term, large-scale deployment. With a low-pressure design, the device can sample a high flowrate of 10 lit/min with a low-power fan. The device collects dust particles with a nominal size range of 1-10 μm, with an efficiency of >60%. The device may include aerosol sensing components, a particle ionizer, and an electrostatic precipitator. A removable cassette includes a ground plate for collection of ionized particles and a high voltage plate opposite the ground plate. A divider may be included beneath the ionizer to facilitate separation of collected particles by size on the ground plate.

An electrostatic precipitator is disclosed. The electrostatic precipitator includes an ionization unit configured to generate ions and a dust collection unit configured to electrically collect dust to which the ions are attached. The ionization unit is an ionizer that applies a predetermined voltage to an electrode needle to cause a corona discharge to generate the ions having the same polarity as a polarity of the applied voltage. The dust collection unit includes a high-voltage electrode disposed having a plurality of gaps for passing the dust to which the ions are attached, and a dust collection board disposed at a rear stage of the high-voltage electrode. A polarity of the voltage applied to the electrode needle of the ionization unit and the polarity of the voltage applied to the high-voltage electrode are set to the same polarity.

An ionic personal air filter comprising, generally, a mouthpiece, a tube and high voltage electrodes configured thereto, is disclosed. Notably, the construction creates fluid dynamic properties needed to allow ionization and collection to take place. The unit is small and easily fits in a user's hand. In a preferred embodiment, the negative collector plate is realized with a ring structure have veins at an interior thereof; and the positive collector plate comprises a copper sheet rolled to a coil increasing surface area of electrodes while providing a compact unit.

An ionic personal air filter comprising, generally, a mouthpiece, a tube and high voltage electrodes configured thereto, is disclosed. Notably, the construction creates fluid dynamic properties needed to allow ionization and collection to take place. The unit is small and easily fits in a user's hand. In a preferred embodiment, the negative collector plate is realized with a ring structure have veins at an interior thereof; and the positive collector plate comprises a copper sheet rolled to a coil increasing surface area of electrodes while providing a compact unit.

Air filtration assemblies configured to provide instant detection of particles and/or improve particle filtration are disclosed. The assemblies may include an air inlet duct in fluid communication with a compressor of a gas turbine system. The air inlet duct may include an inlet for receiving intake air including intake air particles, and an outlet positioned opposite the inlet. The assembly may also include a plurality of vane filters at the inlet, an array of fabric filters positioned in the air inlet duct, downstream of the vane filters, and a silencer assembly positioned in the air inlet duct, downstream of the fabric filters. Additionally, the assembly may include an electrostatic component positioned in the air inlet duct, downstream of the fabric filters. The electrostatic component may be configured to charge the intake air particles that pass through the vane filters and the fabric filters.

This publication discloses a filter unit connectable to a mobile communication device including a fan for generating an air flow inside the filter unit, electrodes covered with a photo catalytic material like TiO.sub.2 in the air flow, UV-LEDs illuminating the electrodes, and outlet for the air flow directed in direction of user of filter unit.

This publication discloses a filter unit connectable to a mobile communication device including a fan for generating an air flow inside the filter unit, electrodes covered with a photo catalytic material like TiO.sub.2 in the air flow, UV-LEDs illuminating the electrodes, and outlet for the air flow directed in direction of user of filter unit.

A plasma purification module is described. The plasma purification module includes a first electrode plate, a second electrode plate, at least one long electrode and a catchment element. The first electrode plate is configured to be connected to a first electrode of a power supply. The second electrode plate is disposed over a surface of the first electrode plate, and is configured to be connected to a second electrode of the power supply, in which the second electrode plate has a channel. The long electrode is configured to form a discharge area. The long electrode is disposed on the surface of the first electrode plate and passes through the channel. The long electrode has a tip. The catchment element is disposed adjacent to the tip, and is configured to provide the discharge area with mist or water.

An air purification system for use in a given location to remove or destroy harmful pathogens in the air. The air purification system has a housing with an inlet, an outlet, and a passageway extending between the inlet and the outlet. An intense field generator and filter is used to charge any particles in the air and remove them from the air flow. Finally, a dielectric barrier discharge unit having a high voltage electrode coupled to a dielectric barrier and a ground electrode spaced apart from the high voltage electrode is used to form a low temperature plasma chamber is in communication with the passageway so that the ions created in the plasma chamber will attach to and destroy any remaining particles in the air flow.

An air purification system for use in a given location to remove or destroy harmful pathogens in the air. The air purification system has a housing with an inlet, an outlet, and a passageway extending between the inlet and the outlet. An intense field generator and filter is used to charge any particles in the air and remove them from the air flow. Finally, a dielectric barrier discharge unit having a high voltage electrode coupled to a dielectric barrier and a ground electrode spaced apart from the high voltage electrode is used to form a low temperature plasma chamber is in communication with the passageway so that the ions created in the plasma chamber will attach to and destroy any remaining particles in the air flow.