Question

Write four technological strategies to reduce air pollution.

Answer 1

1. Control Technology: Modifying the fuel or combustion techniques or removing pollutants directly from the fuel gases before release into the air.
2. Catalytic Reduction: The use of three-way catalytic converters in vehicles helps to control and significantly reduce motor vehicle emissions.
3. New Manufacturing Processes: Using improved manufacturing techniques such as low-temperature hydrometallurgical methods can reduce emissions like sulphur dioxide from metal smelting.
4. Control of Gaseous Contaminants: Control of gaseous contaminants through combustion, absorption, and adsorption techniques to remove or treat pollutants from gas streams.