Question

Which of the mentioned devices are used for removing vapour phase/ gaseous pollutants?

(a) Absorption towers

(b) Catalytic converters

(c) Thermal oxidisers

(d) All of the mentioned

The question was asked during an interview.

I would like to ask this question from Air Quality in chapter Air Pollution of Environmental Engineering

Answer 1

The correct option is (d) All of the mentioned

To elaborate: Absorption tower, catalytic converters and thermal oxidisers filter out harmful gaseous pollutants from the air.