ABSTRACT
This chapter presents a brief overview of the air pollution field. It deals with fundamental concepts that are needed to make calculations dealing with air pollution control. The most commonly used air pollution control devices for gaseous and particulate pollutants are presented, such as absorption, adsorption, and combustion for gaseous contaminants and settling chambers; cyclones; electrostatic precipitators; venturi scrubbers; and baghouse filters for controlling particulate emissions. The SCREEN2 model is a scoping model that can be used to evaluate the air quality and estimate whether or not a given source is likely to pose a threat and cause the National Ambient Air Quality Standards to be exceeded. The mole is a practical, simple unit that has helped make chemistry an exact and quantitative science. Henry's law, simply stated, indicates that the concentration of a gas dissolved in a solvent under equilibrium conditions is proportional to the partial pressure of the gas above the solution at constant temperature.
