LEAPES UNIT 7

Vapor Recovery Nozzle

Captures hydrocarbon VOCs released from gasoline fumes during refueling.

Catalytic converter

Filters out nitrogen oxides, carbon monoxide, and gasoline particles.

Crushed limestone

Used to reduce SO2 from coal power plants by mixing with coal before burning.

Fluidized bed combustion

Filters out sulfur dioxide by making combustion more efficient with pumped in oxygen.

Scrubbers

Treat power plant emissions with chemicals which filter out NOx, SO2, VOCs, and PM in wet scrubbers.

Electrostatic precipitator

Filters out particulate matter by charging particles and collecting the charged particles.

Fabric (baghouse) filters

Filters out particulate matter.

Thermal inversion

A layer of warm air overriding a layer of cool air, reducing dispersion of pollutants and causing poor air quality.

Primary pollutants

Emitted directly into the air from a source.

Secondary pollutants

Created by a reaction between primary pollutants and environmental factors such as sunlight or water.

Photochemical smog causes

More traffic increases NO2; hotter temperatures from low albedo; more VOCs from gas stations and factories.

Acid deposition causes

Result from the reaction of primary pollutants (NOx and SO2) with water.

Radon sources

Found in granite bedrock.

VOCs sources

Commonly released from paints, solvents, and gasoline.

Lead sources

Emitted through the burning of oil or coal.

Noise pollution impacts

Disrupts animal communication, migration, and predator-prey dynamics.