The results confirmed the validity of the applied computational fluid dynamic in artificial aeration; based on the simulated results, the effect of aeration can be predicted.
Electrical impedance tomography (EIT), as a noninvasive and radiation-free technique, has the potential for monitoring the regional lung aeration and dynamic visualization of regional ventilation distribution at the bedside.
To examine extensibility of the S. cerevisiae dynamic model to different aeration levels, a microaerobic batch experiment was performed at a k L a of 5.5 h-1 and model predictions were generated with the same uptake parameter values listed in Table 1.
To examine prediction accuracy of dynamic co-culture model at aeration levels not used for parameter adjustment, we performed three additional co-culture fermentations at a k L a of 7.6 h-1 with 0.145 g/L of each yeast as the inoculum and initial sugar concentrations of 16.5 g/L glucose and 8.5 g/L xylose.
Besides the regular online data of temperature, pH value, feed rate, and DO levels, the dynamic information also included the agitation, aeration rate, and the mass transfer characteristics.
A small compressor provides this aeration via a rubber aerator.
Following experimental validation, the dynamic co-culture model was used to compute the aeration level and initial cell concentrations that maximized batch ethanol productivity.
Different options were subjected to a long term dynamic influent profile and evaluated using ASM1 for effluent quality, aeration requirements and sludge production.
We incorporated the agitation and aeration rate of the pilot-scale fermentation into the dynamic models so that we could study mass transfer characteristics as functions of superficial gas velocity and agitation power for each run.
Finally, all aeration profiles were challenged with a 2-day storm through dynamic simulations.
Lipid accumulation in oleaginous microorganisms is a dynamic process which depends on the growth conditions (like nutrients, temperature, pH, aeration and light in autotrophs) and growth stages.
