An electrostatic precipitator removes particles from gas by using electrical energy to charge particles positively or negatively, then attracting the charged particles to collector plates with the opposite charge, all in a process that cleans the gas stream.

1. An electrostatic precipitator (ESP) removes
particles from a gas stream by using electrical
energy to charge particles either positively or
negatively. The charged particles are then
attracted to collector plates carrying the
opposite charge.