Which of the following devices are used for controlling the particulate contaminants present in stack emissions?
(A) Wet Collectors (B) Centrifugal Collectors (C) Electrostatic Precipitators (D) Baghouse Filters (E) Fixed Bed Adsorbers
Choose the correct answer from the options given below:

Correct option is C

The control of particulate contaminants in stack emissions requires specialized devices that capture or remove solid or liquid particles. Below are the roles of each listed device:
1. Wet Collectors (A): These devices use water or another liquid to trap and remove particulates from gases. They are effective for removing fine particles.
2. Centrifugal Collectors (B): Also known as cyclones, these use centrifugal force to separate particulates from gas streams. They are suitable for coarse particles.
3. Electrostatic Precipitators (C): These devices apply an electric field to ionize and remove particles from gas streams. They are highly efficient for fine particulates.
4. Baghouse Filters (D): These use fabric filters to trap particulates. Gases pass through the fabric while particulates are retained.
5. Fixed Bed Adsorbers (E): These are typically used for gas-phase pollutants like VOCs and not primarily for particulates, so they are less relevant for stack particulate control.
· Wet collectors are effective for fine particles and gas cleaning.
· Centrifugal collectors are cost-effective for coarse particles.
· Electrostatic precipitators offer high efficiency for fine particulate removal.
· Baghouse filters provide versatile and effective particulate filtration.
· Fixed bed adsorbers primarily target gaseous pollutants.