Air Pollution Scenario in India and Assessment of Air Purification Technologies

Air pollutants have adverse health effect on humans and animals. Common air pollutants are particulate matter (PM2.5 and PM10), sulfur dioxide, carbon monoxide, ozone, nitrogen dioxide, and toxics. Major air toxics are xylenes, formaldehyde, benzene, benzo (a) pyrene, and toluene which are present in low concentration and still harmful to health. In order to prevent adverse health effect, these contaminants need to be removed from inhaled air. The air pollution level is different for different locations in India. In metro cities, this level is higher as compared to smaller cities due to more industrial activities, automobile vehicles, etc. The methods used in air purification are sedimentation chamber, vortex separation, rotation scrubber, electro-filter, cloth filter, ceramic filter, absolute (HEPA) filter, and mist filters. This research paper deals with pollution level in different parts of India and comparative assessment of different air purification technologies.