A scrubber is a device used to remove pollutants from gases before they are released into the atmosphere. It works by passing the gas through a liquid or solid material that captures harmful substances, such as sulfur dioxide or particulate matter. Scrubbers are commonly used in industrial settings, such as power plants and factories, to help meet environmental regulations. There are different types of scrubbers, including wet scrubbers and dry scrubbers. Wet scrubbers use a liquid solution to absorb pollutants, while dry scrubbers use a solid material to capture them. Both types play a crucial role in reducing air pollution and protecting public health.