Bioprocess Engineering Basic Concepts 2nd Edition Solution -

2.2. A fermentation process produces 200 kg of product per day. If the process operates 300 days per year, what is the annual production of product?

1.2. Describe the differences between batch, fed-batch, and continuous bioprocesses. Bioprocess Engineering Basic Concepts 2nd Edition Solution

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? A stirred-tank bioreactor has a volume of 2000

Solution: Mass of medium = 1000 L * 1000 g/L = 1,000,000 g or 1000 kg. Energy required = 1000 kg * 4.2 kJ/kg°C * (37°C - 20°C) = 1000 * 4.2 * 17 = 71,400 kJ. N(t) = N0 * e^(-kt)

Solution: Using the equation for sterilization, N(t) = N0 * e^(-kt), where N0 is the initial number of spores, k is the death rate constant, and t is time. N(15) = 10^6 * e^(-0.5*15) = 10^6 * e^(-7.5).

Solution: Power per unit volume = 2 kW / 2000 L = 0.001 kW/L or 1 W/L.

1.1. What are the main goals of bioprocess engineering?