Question

Write a short note on electrostatic precipitators.

Answer 1

Electrostatic precipitators are devices used to remove particulate matter from industrial emissions before release into the atmosphere. They work by applying high voltage to electrode wires, creating a corona that releases electrons. These electrons attach to dust particles, giving them a negative charge, which causes the particles to be attracted to grounded collecting plates. The collected particles then fall and can be removed, allowing the device to capture up to 99% of particulate matter. Electrostatic precipitators help significantly reduce air pollution from chimney exhausts.