Electrostatic precipitators use high voltage to charge particles, which are then collected on grounded plates.

Fabric filters rely on interception, where particles collide with and adhere to the fibers of the filter material.

Packed bed scrubbers use a bed of solid packing material to provide a large surface area for gas-liquid contact, facilitating the absorption of acidic gases.

Catalytic converters utilize oxidation-reduction reactions to convert harmful pollutants like carbon monoxide and hydrocarbons into less harmful substances like carbon dioxide and water vapor.

Activated carbon adsorbers use activated carbon's high surface area and adsorption capacity to trap and remove VOCs from an airstream.

Cyclone separators utilize centrifugal force to separate particulate matter from an airstream by causing particles to impact and collect on the cyclone's inner walls.

Selective catalytic reduction (SCR) uses a catalyst to convert NOx into harmless nitrogen and water vapor.

Biofilters utilize microorganisms to biologically degrade and remove pollutants from an airstream.

Activated carbon injection involves injecting activated carbon into the flue gas stream to adsorb and remove mercury.

Thermal oxidizers utilize high temperatures to oxidize and destroy pollutants in an airstream, converting them into less harmful substances.

HEPA filters are commonly used in residential and commercial heating systems to remove fine particulate matter from the air.

Wet scrubbers use a liquid spray to absorb and remove pollutants from an airstream.

Wet scrubbers are commonly used to remove H2S from industrial emissions by absorbing it into a liquid solution.

Condensers utilize the principle of condensation to remove pollutants from an airstream by cooling the gas stream and causing pollutants to condense into a liquid or solid form.

Electrostatic precipitators use high voltage to charge particles, which are then collected on grounded plates.