Figure 9
Dissolved hydrogen concentration as a function of fermentation time. The dissolved H2 concentration predicted by the model as a function of fermentation time for experiments 3, 4, 5 and 6 is shown. Note the rapid increase in dissolved H2 concentration in experiment 4, which is the effect of the low stripping rate and high growth rate. The predicted equilibrium dissolved H2 concentration (based on the partial pressure of H2) is also included for experiment 6.