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In a coal fired power plant electrostatic precipitators are installed to control emission of
A
$NO_x$
B
SPM
C
CO
D
$SO_2$
Detailed Solution
Thermal power plants that burn coal release particulate and gaseous air pollutants.
The electrostatic precipitator is the most widely used device for removing particulate matter; it can remove over 99 percent of the particulate matter present in the exhaust of a thermal power plant.
It has electrode wires maintained at several thousand volts, which produce a corona that releases electrons.
These electrons attach to the dust particles and give them a net negative charge; the charged particles are then attracted to and collected on earthed plates.
So electrostatic precipitators control the emission of SPM (suspended particulate matter).
Gases such as $SO_2$ are removed by a scrubber, and CO and $NO_x$ from vehicles are controlled by catalytic converters.
The electrostatic precipitator is the most widely used device for removing particulate matter; it can remove over 99 percent of the particulate matter present in the exhaust of a thermal power plant.
It has electrode wires maintained at several thousand volts, which produce a corona that releases electrons.
These electrons attach to the dust particles and give them a net negative charge; the charged particles are then attracted to and collected on earthed plates.
So electrostatic precipitators control the emission of SPM (suspended particulate matter).
Gases such as $SO_2$ are removed by a scrubber, and CO and $NO_x$ from vehicles are controlled by catalytic converters.