This technology is based on the adsorption properties of activated carbon or zeolites. Thanks to their porosity, they can adsorb a great part of the organic compounds in the gas.
It consists of a rotary drum which allows the concentrator to have always an area on adsorption phase, another on regeneration phase and another one on refrigeration.
VOCs are kept on the adsorbent material and come out purified to the atmosphere. In order to regenerate the zeolite, a low warm air flow circulates through it. This air contains a high VOC concentration and is sent to a thermal treatment or to recuperation with low operational costs.