The fluidized bed scrubber (FBS) is a unique scrubber type specially suited for applications where other types of equipment, such as packed towers, would be prone to fouling. The FBS is effective for removal of micron and submicron particulate but can also achieve high-efficiency gas absorption. The units contain a special type of packing that literally lifts or fluidizes in a certain velocity range. This produces a highly turbulent zone that prevents solid build-up while achieving intimate contact of the gas and liquid for highly effective particulate collection and mass transfer. This design also requires much less energy input than other conventional particulate removal devices such as venturi scrubbers. Existing packed towers can be easily retrofitted to a Fluidized-bed scrubber design to solve fouling problems, increase capacity, or add particulate removal capability. Fluidized-bed scrubber Pilot Testing Equipment is available for new applications.