As a consequence of anthropological processes, the environment needs more concerns and regulations. One of the challenges is the capture of carbon dioxide (CO2) which has been elaborated to reduce the greenhouse effect. At this moment the use of CO2 capture systems is mainly envisaged in large scale plants. In this thesis, some of the most diffused technologies have been studied and compared to each other for application to small-scale CO2 emitters. In fact, there are many small or medium-sized plants that do not pay sufficient attention to the emission of carbon dioxide but which, on the whole, have a significant impact on the greenhouse effect.