What causes air pollution?


Quick Answer

Most air pollution caused by human activities is the result, whether directly or indirectly, of burning fuels in a furnace or engine. Examples of fuels burned that produce air pollution are coal, natural gas, oil and gasoline. These fuels are burned to produce electricity and power vehicles.

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Full Answer

One of the biggest consequences of air pollution is its impact on human health. Air pollution contributes to respiratory diseases such as chronic bronchitis, asthma, lung cancer and emphysema. Air pollution can also harm and destroy plant and animal life, and it damages property.

There are two types of widespread air pollution. The first type of pollution is known as smog, and the second type is known as soot. Significant pollutants that make up smog and soot include sulfur, nitrogen and carbon monoxide. Smog occurs when pollutants become trapped close to the ground.

Several devices and systems have been created to either reduce or prevent industrial air pollution. For example, electrostatic precipitators remove pollutant particles by charging them electrically and collecting them on electrodes with an opposite charge. Cyclone separators rotate impure air with enough force to hurl particles against the side walls of the separator. Scrubbers remove impurities in the air through water sprays.

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