Question

Name the most widely used device for removing particulate pollutants from the air. Explain how the device is used.

Answer 1

Electrostatic precipitators are mainly used for removing particulate pollutants from the air. It cleans the air by the following steps:

1. The contaminated air is passed through high voltage negatively charged plates.
2. The smoke particles picks up the negative charge.
3. It is further passed through the positively charged plates.
4. The positive charge attracts the negatively charged smoke particles and pass the clean air.