In one fermentation process, Pseudomonas aeruginosa was cultivated at initial pH 7.2 with specific growth rate, u of 0.44/ hour in a continuous culture system under aerobic condition where dilution rate D = 0.5 / hour. Glucose is used as carbon and energy source in the feed with a concentration of S. = 4 g/L. The glucose concentration effluent is desired to be S = 0.2 g/L. If the growth rate is limited by oxygen transfer, by using the following information:- Yx's = 0.5 gX/gS Y" = 0.5 gX/02 x/02 C*=10 mg/L Identify the ka value to overcome oxygen transfer limitation where C is 3 mg/L