Answer:
Electrostatic precipitator can remove over
99% particulate matter present in the exhaust from a thermal power plant by the
following mechanism
(i) It has electrode wires that are
maintained at several thousand volts, which produce acorona that releases
electrons.
(ii) These electrons attach to
dust particles giving them a net negative charge.
(iii) The collecting plates are grounded
and attract the charged dust particles.
(iv) The velocity of air between the
plates is kept low enough to allow the dust to fall,
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