Penicillin is to be extracted from the clarified fermentation broth by using pure amyl acetate as solvent at pH 4.0. The distribution coefficient KD of the system was found to be 32 . The initial concentration of penicillin in the feed is 0.4g/L. The flow rates of the feed and the solvent streams are 50L/hr and 30L/hr, respectively: - How many ideal stages (countercurrent contact) are required to recover 97% of penicillin in the feed? - If you use three countercurrent stages, what will be the percent recovery? NOTE: - Assume the system is diluted. - Recovery is defined as: 1X0XN