An electrification apparatus for an electrostatic dust collector, including: a first electrode part having a shape of a plate having a plurality of through holes formed thereon in such a manner as to apply one of positive and negative electrodes thereto; and a second electrode part having protrusions each having a plurality of fine conductive fibers in such a manner as to protrude outwardly from the through holes of the first electrode part, whereby electrification performance is improved and harmful ozone and electromagnetic waves are reduced.

Disclosed in certain implementations is a catalysis composition that includes a metal catalyst and a support material impregnated with the metal catalyst.

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.

A built-in apparatus and method for treating air including a housing with an air inlet and an air outlet. An air mover positioned near the air outlet is configured to draw the air through the air inlet. The housing encloses an air treatment zone, such as including an oxidizing zone, and an ozone removal zone positioned downstream of the air treatment zone and oxidizing zone. The air treatment zone includes UV light and/or ozone that partially oxidizes the chemical contaminants in the air treatment zone. A catalyst in the oxidizing zone oxidizes elements within the air treatment zone. The ozone removal zone includes a second, different catalyst material. A UV bulb that may or may not generate ozone is positioned within or downstream of the first and/or second catalyst materials to assist catalyst oxidation and/or self-clean the apparatus.

A built-in apparatus and method for treating air including a housing with an air inlet and an air outlet. An air mover positioned near the air outlet is configured to draw the air through the air inlet. The housing encloses an air treatment zone, such as including an oxidizing zone, and an ozone removal zone positioned downstream of the air treatment zone and oxidizing zone. The air treatment zone includes UV light and/or ozone that partially oxidizes the chemical contaminants in the air treatment zone. A catalyst in the oxidizing zone oxidizes elements within the air treatment zone. The ozone removal zone includes a second, different catalyst material. A UV bulb that may or may not generate ozone is positioned within or downstream of the first and/or second catalyst materials to assist catalyst oxidation and/or self-clean the apparatus.

Disclosed herein are a catalyst composition, catalyst devices, and methods for removing formaldehyde, volatile organic compounds, and other pollutants from an air flow stream. The catalyst composition including manganese oxide, optionally one or more of alkali metals, alkaline earth metals, zinc, iron, binder, an inorganic oxide, or carbon.

Biomass (e.g., plant biomass, animal biomass, and municipal waste biomass) is processed to produce useful intermediates and products, such as energy, fuels, foods or materials. For example, equipment, systems and methods are described that can be used to treat feedstock materials, such as cellulosic and/or lignocellulosic materials, in a vault in which hazardous gases are removed, destroyed and/or converted. The treatments are efficient and can reduce the recalcitrance of the lignocellulosic material so that it is easier to produce an intermediate or product, e.g., sugars, alcohols, sugar alcohols and energy, from the lignocellulosic material.

The invention provides an air purifier (1) comprising a catalytic converter (100), the catalytic converter (100) comprising (i) a catalytically active material (120) and (ii) a heatable material (130) in thermal contact with said catalytically active material (120), wherein the heatable material (130) is heatable by one or more of an alternating electrical field and an alternating magnetic field, the air purifier (1) further comprising a field generator (140), configured free from electrical contact with the heatable material (130) and configured to heat during operation of the air purifier (1) the heatable material (130) by one or more of the alternating electrical field and the alternating magnetic field.

Ionization systems configured with a catalyst-bearing sleeve provide improved filtration while keeping ozone levels within acceptable limits. Modular configurations provide for serviceability and replaceability. System controls monitor particulates, temperature, humidity, and other relevant factors and adjust an ionization level accordingly for optimal performance.

Ionization systems configured with a catalyst-bearing sleeve provide improved filtration while keeping ozone levels within acceptable limits. Modular configurations provide for serviceability and replaceability. System controls monitor particulates, temperature, humidity, and other relevant factors and adjust an ionization level accordingly for optimal performance.