Filtration and air cleaning

Filtration and air cleaning are methods for improving indoor air quality by removing pollutants and contaminants from the air, thus lowering the pollutant concentration indoors.

There are a variety of different technologies that can be used for filtration and air cleaning. The selection of appropriate technology for a given application will depend on the types of contaminants that need to be removed and the size of the space.

Filtration

Filtration is a process that physically removes particles from the air by passing the air through a filter medium.

Air cleaning

Air cleaning encompasses a broader range of technologies and methods that remove or neutralize contaminants from the air, including both particulate matter and gaseous pollutants.

Mechanism:

• Physical processes: Similar to filtration, air cleaning can involve mechanical processes to remove particles.
• Chemical processes: Air cleaning can also involve chemical reactions to neutralize or remove gaseous pollutants.
• Biological processes: Some air cleaners use biological methods to remove contaminants.