4.1. A stirred-tank bioreactor has a volume of 2000 L and operates at a stirrer speed of 100 rpm. If the power input is 2 kW, what is the power per unit volume?
Solution: The main goals of bioprocess engineering are to develop efficient, cost-effective, and safe methods for producing valuable products using biological systems. Bioprocess Engineering Basic Concepts 2nd Edition Solution
Solution: Assuming no cell growth or death, the total amount of cells remains constant at 1000 g. After adding 500 L of medium, the total volume becomes 1500 L. The new cell concentration is 1000 g / 1500 L = 0.67 g/L. Bioprocess Engineering Basic Concepts 2nd Edition Solution