*3.2. Fermentation*

Figure 6 shows the environmental impacts of a biowaste recycling process via fermentation. In this case, the net GWP result of this process, including biowaste transport and collection, is reduced by 206.1 kg(CO2)eq.twaste<sup>−</sup>1. GWP credits are mainly obtained by the substitution of primary resources as well as from the saved energy and yield <sup>−</sup>315 kg(CO2)eq.twaste−<sup>1</sup> . On the contrary, burdens from the fermentation process only are nearly similar to that of composting with a value of 92 kg(CO2)eq.twaste<sup>−</sup>1. Burdens from collection and transport are the same as in the previous case, thus 16.9 kg(CO2)eq.twaste.
