mental data of cumulative hydrogen and methane productions.
Parameters Ptot, k and the maximum production rate (Ptot k)
obtained from Eq. (2) are also reported in Table 6. Cumulative
hydrogen and methane productions over time of the three mixtures
are represented in Fig. 4a and b, respectively.
The hydrogen potential production obtained from Mix A, Mix B
and Mix C were 85 ml H2/gVS, 25 ml H2/gVS, and 65 ml H2/gVS,
respectively. The highest hydrogen yield was recorded for sample
Mix A characterised by the highest content of the fraction BP. On
the contrary the lowest hydrogen production potential was measured
for mixture Mix B characterised by the highest content of
MFC. Sample Mix C presented a hydrogen production yield that
was intermediate between the yields of the other two samples,
but nevertheless closer to the yield of sample Mix A. Taken
together, the fractions F, V and U constituted approximately 80%
of all samples referred to wet weight. A variation in amount of
the BP fraction from 19% to 12% (on wet weight basis) produced
a decrease in hydrogen production from 85 ml H2/gVS to 65 ml
H2/gVS. A further change from 12% to 2% (on wet weight basis)