Figure displays the new valorization process. In this scenario (named SUAD+CHP), the drying process is not meant to remove the presence of water, but principally to evaporate the impurities of non-recycled limonene which may inhibit the bacterial growth by compromising the biogas production. The heat consumption and the environmental impacts associated to the AD are calculated through the Ecoinvent database. In agreement with previous studies, 33 the digestate produced in this phase (185 g/FU), is excluded from the system boundaries. Even if it could contain components useful for agricultural purposes, the chemical analysis remains to be completed.