13.2.4 Control of Air Pollution

. . Control of Air Pollution Certain measures help to remove pollutants, reduce their presence or prevent their entry into the atmosphere. • Trees are the best remedy for urban particulate and gaseous pollution • Forests act as carbon sinks and lungs of the planet • Catalytic converters in vehicles help to reduce polluting gases drastically • Diesel exhaust filters in automobiles cuts particulates • Electrostatic precipitators reduce release of industrial pollutants. • Cost effective air pollution treatment systems like indoor plants and high performance biofilters can improve indoor air quality. The Taj Mahal, a UNESCO world heritage site, is facing deterioration and damage by industrial gases due to several industrial units around Agra. The white marble has decolorized to yellow.