Ozone is a secondary air pollutant formed by the reaction of volatile organic compounds (VOCs) and nitrogen oxides (NOx) in the presence of sunlight.

Electrostatic precipitators use an electric field to charge particles, which are then attracted to a collector plate, removing them from the airstream.

Catalytic converters use a catalyst to convert harmful pollutants, such as nitrogen oxides (NOx) and carbon monoxide (CO), into less harmful substances.

Flue gas desulfurization (FGD) systems use a chemical absorbent, such as limestone or lime, to remove sulfur dioxide (SO2) from power plant emissions.

Renewable energy sources, such as solar and wind power, do not produce air pollution, thus contributing to improved air quality and reduced greenhouse gas emissions.

Thermal oxidation involves burning VOCs at high temperatures to convert them into carbon dioxide and water vapor.

Scrubbers use a liquid or gas to remove pollutants from an airstream, including particulate matter, nitrogen oxides (NOx), and sulfur dioxide (SO2).

Diesel particulate filters, selective catalytic reduction, and exhaust gas recirculation are all technologies used to reduce air pollution from diesel engines.

Biofiltration uses microorganisms to break down and remove volatile organic compounds (VOCs) from an airstream.

Catalytic converters, oxygen sensors, and fuel injection systems all work together to reduce air pollution from gasoline-powered vehicles.

Electrostatic precipitators use an electric field to charge particles, which are then attracted to a collector plate, removing them from the airstream.

Flue gas desulfurization, selective catalytic reduction, and fabric filters are all technologies used to control air pollution from industrial boilers.

Adsorption involves the physical attraction of molecules of a gas or liquid to the surface of a solid, which can be used to remove volatile organic compounds (VOCs) from an airstream.

Electrostatic precipitators, fabric filters, and scrubbers are all technologies used to control air pollution from cement plants.

Selective catalytic reduction (SCR) systems use a catalyst to convert nitrogen oxides (NOx) into nitrogen and water vapor.