A method is disclosed for removing ozone from a gas. According to this method, the gas is contacted with an adsorbent that includes a transition metal oxide or metal organic framework to form a treated gas. The treated gas is contacted with a noble metal catalyst to catalytically decompose ozone in the treated gas, thereby forming an ozone-depleted treated gas.

An ionic oxidation refreshing system for refreshing odorized items, comprising an enclosure to contact the odorized items; an ionizing stage mechanism that produces an ionized ozone gas mixture inside of the enclosure, killing germs, including odor-causing bacteria, viruses, molds, and fungus; and a filtering stage mechanism that neutralizes and filters out any toxic by-products including one or more of ozone, nitric acid, aldehydes, and VOCs resulting from surface oxidation of the odorized items by the ionized ozone gas mixture.

An air treatment system (1) arranged for treating polluted air (A.sub.pol) at least by means of an air particle filter, and wherein said air treatment system comprises an air treatment unit placed upstream of the air particle filter and being arranged for directing a sub-flow (A.sub.sub) of the polluted air (A.sub.pol) through said air treatment unit (2) and for subjecting the sub-flow (A.sub.sub) to a photooxidation process. The photooxidation process in the air treatment unit (2) is so efficient that the overall concentration of gas-pollution of the combined air flow A.sub.com is significantly reduced whereby large volumes of polluted air can be treated in a fast, inexpensive and effective manner.

A filter arrangement for a mobile device includes at least one first filter element and at least one second filter element, which are arranged in an air duct of the mobile device. The at least one first filter element is a pleated filter and the at least one second filter element is an adsorption filter. The at least one first filter element and the at least one second filter element are separate and mounted in the air duct so as to be mutually spaced. The at least one first filter element includes at least one nonwoven layer. The at least one second filter element is a honeycomb filter including a plurality of channels which are delimited by channel walls.

An electrostatic precipitating apparatus for an air conditioning system is disclosed. The precipitating apparatus includes an electrostatic precipitator including a plurality of discharge electrodes to which a voltage is applied and a plurality of electrostatic precipitating electrodes each disposed between the discharge electrodes and grounded, a washing water supply spraying the washing water to the electrostatic precipitator, and a frame assembly fixed to the duct to support the electrostatic precipitator. The frame assembly is fixed to the duct to support the electrostatic precipitator, and includes a prestressing locking member fixed to inside of the duct in a state in which a pressing force is applied to the electrostatic precipitator.

An ionic oxidation refreshing system for refreshing odorized items, comprising an enclosure to contact the odorized items; an ionizing stage mechanism that produces an ionized ozone gas mixture inside of the enclosure, killing germs, including odor-causing bacteria, viruses, molds, and fungus; and a filtering stage mechanism that neutralizes and filters out any toxic by-products including one or more of ozone, nitric acid, aldehydes, and VOCs resulting from surface oxidation of the odorized items by the ionized ozone gas mixture.

Disclosed herein are catalyst compositions for removing formaldehyde, volatile organic compounds, and other pollutants from an air flow stream. In one embodiment, a catalyst composition comprises manganese oxide particles and rare earth metal catalyst particles.

An air pollution remediation system is provided. The systemic apparatus includes a tubular column having a plurality of spaced apart vents along its outer surface. Each vent has adjustable louvers for controlling the airflow therethrough. An airflow conduit extends along the longitudinal length of the column with porous layers and a mass of absorbent disposed between the airflow conduit and the plurality of vents. A fan fluidly coupled to the airflow conduit urges ambient air into the airflow conduit and through the porous layers and the mass of absorbent and out of the vents in a selectively controlled manner by way of the adjustable louvers. A prefilter may be disposed upstream of the fan. A network of the systemic apparatus can be arranged to provide, in a selective enabled manner through the adjustable louvers, a contiguous looping canopy of purified air over large open spaces.

A device and a process used to purify air from pollutants are disclosed. The device has at least one empty body defining a chamber intended to receive an air flow to be purified and having at least one inlet hole for the air, and at least one outlet hole for the air. The chamber has an electric field generator, at least one photocatalyst, intended to be excited by a luminous radiation, implementing a photocatalysis process, at least one luminous radiation source intended to excite the photocatalyst, and at least one adsorbing material. The electric field generator, the at least one photocatalyst and the at least one adsorbing material are disposed in the chamber in such manner to cooperate.

The present invention relates to an oxygen generator integrated with an ozone removal filter such that an ozone removal filter is provided in an oxygen discharge opening communicating with an oxygen discharge hole of a water electrolytic cell constituting an apparatus for producing oxygen by using mineral water among generally used water, for filtering ozone generated with oxygen during electrolysis of water and ozone compounds, in which ozone is combined with various organic and inorganic materials contained in mineral water, such as calcium (Ca), magnesium (Mg) and silicon (Si), and thus the oxygen generator allows only high purity oxygen to pass through and to be discharged through the oxygen discharge hole.