In Figure 11.7, the performance of the pulsing system is compared with that of the
nonpulsed one. As can be seen, the differences in efficiency are more evident in the
second half of the bioreactor, as it is predictable.
Figure 11.6 Influence of pulsation
frequency on overall productivity (Qp)
obtained for an alcoholic fermentation
by S. cerevisiae immobilised on
alginate with So=100 g Lā^1 and at a
hydraulic residence time of 1.4 h in a
packed bed bioreactor.
Pulsing bioreactors 341