A filter media can include a fiber coated with a barrier coating that is substantially non-reactive to reactive species, and a photocatalytic coating disposed on the barrier coating, wherein the photocatalytic coating generates reactive species in response to illumination with optical radiation.

The present application provides a wall-mounted air purifier, including casing, a filter installed in the casing, and a fan installed in the casing. The casing is defined by an air inlet and an air outlet, and the air outlet is located at the position corresponding to the outlet of the fan. The filter is arranged between the air inlet and the fan, a photocatalytic module is installed in the casing, and the photocatalytic module is arranged between the air inlet and the fan. The wall-mounted air purifier provided in the present application filters and purifies the air by arranging a filter in the casing; and arranging a photocatalytic module in the casing to sterilize and disinfect the gas entering the air inlet and decompose harmful molecules in the gas for better purifying the air and improving the air purification capacity.

The present invention provides a wireless rechargeable and portable anti-microbial respirator. The respirator includes a face-piece with an air inlet and an air outlet; a first belt and a second belt, the first belt is connected to ends of the face-piece, and the second belt is configured to wrap around the waist of a user; a flexible outlet tube, where the first end of the flexible outlet tube is connected to the air outlet of the face-piece; a flexible intake tube, where the first end of the flexible intake tube is connected to the air inlet of the face-piece; and a filtration system fixed onto the second belt. The key features of the respirator in the present invention include highly antibacterial and antiviral, long duration, reusable, self-cleaning and self-disinfecting, lightweight and portable, wireless power transfer, and great airflow and comfortable breathing.

This disclosure discloses an air purification apparatus, and the air purification apparatus includes an inner housing, a plurality of photocatalytic reactors and a light source. The inner housing is porous to allow air flow to pass. The photocatalytic reactors are filled in the inner housing. The photocatalytic reactors respectively have a photocatalytic layer formed thereon. The light source is disposed in the inner housing and surrounded by the photocatalytic reactors. The light source is configured to irradiate photocatalytic reactors to activate the photocatalytic layers on the photocatalytic reactors.

The present invention relates to a catalyst article for the exhaust system of a natural gas engine with improved sulphur and/or water tolerance. The catalyst article comprises a doped palladium-on-alumina catalyst, wherein the palladium-on-alumina catalyst is doped with manganese and/or zinc. The invention further relates to an exhaust gas treatment system, a natural gas combustion engine and to a method for the treatment of an exhaust gas from a natural gas combustion engine.

Some embodiments of the present disclosure relate to a method of regenerating at least one filter medium comprising: providing at least one filter medium, wherein the at least one filter medium comprises: at least one catalyst material; and ammonium bisulfate (ABS) deposits, ammonium sulfate (AS) deposits, or any combination thereof; flowing a flue gas stream transverse to a cross-section of a filter medium, such that the flue gas stream passes through the cross section of the at least one filter medium, wherein the flue gas stream comprises: NOx compounds comprising: Nitric Oxide (NO), and Nitrogen Dioxide (NO.sub.2); and increasing an NOx removal efficiency of the at least one filter medium after removal of deposits.

The present invention relates to an electrical dust collection device comprising: a charging part for applying charges to dust particles introduced from the outside; a dust collection part for collecting, by electric attraction, the dust particles charged by the charging part, wherein the charging part uses a first charging plate and a second charging plate, in parallel, in the movement direction of dust, thereby increasing an assembly property and further increasing dust collecting efficiency through stable charging, and the dust collection part comprises a first connection portion that continues at one side of a plurality of first dust collection plates, thereby increasing productivity and dust collecting performance.

As an accessory to smoke or vaporizer devices or integrated into same, or to accompany smokers in general, a personal air filter comprising multiple filter mediums and technologies, and various combinations thereof, including mechanical, chemical and electrostatic principles, is disclosed. The different mediums and components are sequentially incorporated into a compact unit that can fit easily into a user's bag, purse or pocket. Importantly, harmful organic compounds are targeted as well as nanoparticles. An additional feature is that the filter device is easily disassembled to replace and/or reuse inner and outer components.

An indoor unit for an air conditioner including: a cabinet assembly forming an external appearance of the indoor unit and having a suction port formed in a rear surface of the cabinet; a filter module movably disposed in rear of the cabinet assembly; a filter module mounted to the filter mounting member and filtering foreign substances in air flowing into the suction port; a mobile member connected to the filter mounting member and moving a position of the filter mounting member; a driving device pressing the mobile member to change the position of the filter mounting member; and a controller configured to, in response to receiving a control command to change the position of the filter mounting member, operate the driving device that presses the mobile member.

Disclosed is a photocatalyst filter module including: a housing having an inner space opened in a back-and-forth direction so that fluid passes therethrough; a partition for forming a plurality of photocatalyst accommodation spaces by partitioning the inner space; a photocatalytic ball accommodated in the photocatalyst accommodation space; a mesh-shaped cover unit attached to the front and the rear of the housing to prevent the photocatalytic ball from being separated; and a light source unit provided adjacent to the rear of the housing.