Question

Write about the Electrostatic precipitator

Answer 1

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It is most widely used for removing particulate matter like soot and dust present in industrial exhaust. It can remove almost 99% particulate matter present in exhaust from a thermal power plant.

In this method, high voltage is applied and electric discharge takes place which causes ionisation of air in the smokestack. Free electrons in the ionised air get attached to the gaseous/dust particles moving up the stack. These negatively charged particles move towards the positive electrode and settle down there. These particles are removed by vibrations of the electrodes and collected in the reservoir.

Answer 2

Answer:

Electrostatic precipitator (ESP) is a filtration device that removes fine particles like dust and smoke from a flowing gas using an high voltage electrostatic charge and collecting them on collecting plates. The electrode wires that are maintained at several thousand volts releases electrons.