6. A 200L stirred fermenter contains a batch culture of Bacillus Subtilis at 28C. Air at 20C is pumped into the vessel at a rate of 1vvm (volume of gas per volume of liquid per minute). The pressure in the fermenter is 1atm. The gas flow rate measured at the outlet of the fermenter is 189L/min. The solubility of oxygen in the fermentation broth at 28C and 1atm air pressure is 7.8103kg/m3. a) Calculate the oxygen transfer rate with respect to the outgas concentration (Assume values from 18% to 20.1% o2, take a step size of 0.1% ). Note: Make a graph relating the oxygen transfer rate and the oxygen outlet partial pressure. Eheekiong wod step-by-step procedure, bow the velues eane out Cooors l3e