A fermenter is maintained at 35⁰C by water circulating at a rate of 0.5 kg s^-1 in a cooling coil inside the vessel. The inlet and outlet temperatures of the water are 8⁰C and 15⁰C respectively. The length of the cooling coil is increased by 50%. In order to maintain the same fermentation temperature, the rate of heat removal must be kept the same. Determine the new cooling-water flow rate and outlet temperature by carrying out the following calculations. The heat capacity of the cooling water can be taken as 4.18 kJ kg^- 1 o C^- 1. From a steady-state energy balance on the cooling water, calculate the rate of cooling with the original coil ___________________.

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#Question id: 27196

#Section 5: Bioprocess Engineering and Process Biotechnology

The rate constant for a first order reaction is 7.0 x 10^-4 s^-1. If initial concentration of reactant is 0.080 M, what is the half life of reaction?

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#Question id: 19915

#Section 5: Bioprocess Engineering and Process Biotechnology

A continuous reactor has a dilution rate of 0.5 h^-1. Its residence time would be

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#Question id: 14367

#Section 5: Bioprocess Engineering and Process Biotechnology

During an enzyme purification, 0.23 g of protein was dissolved in 5 mL buffer. Suppose 0.5 mL of this solution converted 4.7 mmol of substrate in 30 sec. Calculate specific activity as units/mg protein - 

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#Question id: 1834

#Section 2: General Biology

Lepromatous leprosy is characterized by:

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#Question id: 19046

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

Which of the following techniques is used to study the three-dimensional structure of a molecule?