Which of the following is a method used to get rid of particulate matter present in the exhaust from a thermal power plant ?

Options

A. Magnetic precipitators
B. Chromatography
C. Electrostatic precipitators
D. Mass spectrometry

Answer

C

Explanation

Electrostatic precipitators (ESPs) are very efficient devices which remove 99 % of particulates present in the industrial and thermal plant exhausts. There are electrode wires and a stage of collecting plates. The collecting plates. The collecting plates wires and a stage of collecting plates. The collecting plates are connected with ground. The electrode wires are provided with several thousand volts electric current. It creates a corona which releases electrons. The electrons attach to the suspended particles and make them negatively charged within a fraction of a second. Air with charged particles passes slowly over collecting plates. The particulate matter settles over them and are removed.