Exhaust streams are drawn by the fan and sent to the rotor concentrator unit. The stream passes through a rotor concentrator, in which VOCs are adsorbed and purified. The concentrator unit rotates continuously, and transports adsorbed VOCs into a desorption section. The organics are then desorbed from the media with a low volume, heated air stream by the heat exchanger. The heated stream is then processed by a catalytic oxidizer. When the stream is heated to a specific temperature, it will undergo the catalytic reaction (use precious metal: palladium, platinum, manganese.) The process of the catalytic reaction will convert VOCs into CO2 and H2O. The air is then released into the atmosphere. Zeolite concentrators divide into two types: Carousel Type and Disk Type.