Due to its resistance against corrosion, FRP has been used to construct vessels and tanks to house reactive and corrosive chemicals. Like any other compound, FRP also undergoes an oxidation process, where the surface becomes dull and the color fades. FRP scrubbers are generally used to scrub fluids off the surface to prevent oxidation. In air pollution control technology, there are generally 3 main types of FRP scrubbers.
Dry media scrubbers involve a dry, solid media suspended in the middle of the tank to control the concentration of a pollutant in the incoming gas via absorption and adsorption. Wet media scrubbers douse the polluted fluids with a scrubbing concentrate. Due to more contact with the content, these vessels must be designed with more stringent criteria. Biological scrubbers are structurally similar to wet media scrubbers. This media is designed to encourage bacteria growth by spraying the vessel through with water filled with nutrients to encourage bacteria to grow. With biological scrubbers, it is actually the bacteria which scrub the pollutants. One general limitation of FRP vessels and scrubbers would be its temperature limits. FRP is not designed to withstand high temperatures and the limit depends on the resin used to manufacture the composite.