| abstract |
A contaminated air purifying apparatus (1, 101, 201, 301, 401, 501) capable of decreasing particles such as dust floating in air, soot produced by a combustion engine and the like and air pollutants such as nitrogen oxides (NOx) contained in exhaust gas. Particulates such as dust, soot and the like are electrostatically negatively charged in an electrifying mesh section (10, 104, 210, 310, 406, 506) and collected in a purifying filter section (20, 106, 220, 320, 407, 508) by coulombic force. NOx is converted into N₂ and CO₂ by an action of carbon fiber or carbon particles, resulting in decreased in concentration. The carbon fiber and carbon particles are preferably modified into an increased surface area of 200 to 2000 m²/g. |