2.1. Waste composted
The wastes used in the experiments were different types of
municipal solid wastes. Specifically, 100 kg of non-source selected
MSW from a waste treatment plant located in Zaragoza (Spain)
were composted as received at the plant (MSW). In the case of
source selected OFMSW two cases were studied: (i) OF_wood,
100 kg of material that were already mixed with wood chips in
the plant (ratio 1:1, v:v) and (ii) OF_tube, 100 kg of material that
were used as received at the plant. In this case, the OFMSW was
manually mixed with PE tube pieces of 25 mm diameter and 4–