The organism inside a reactor is Pischia Pastoria growing on hexadecane as substrate. The respiration reaction is as below: C18H34 + a0, + bNH, CH1.6600.27No.2 + dC022 +eH20 A student has solved the stoichiometry of this reaction, gaining the unknowns below. a = 12.48; b = 2.13; c = 10.64; d = 5.37; e = 11.36 The specific growth rate of the organism is 0.5 hand the biomass is 1 g/L. The broth has a viscosity of 0.05 Pas and a density of 10 g/cm3. The culture is grown in a bioreactor with a height of 2 m for 20 hours using Rushton turbine at 150 rpm. Constant for Np in laminar condition is 70, while constant for Np in turbulence condition is 0.35. The bioreactor is in cylinder in shape and detailed dimension of the bioreactor is as stated below. WBF Baffles Impeller Pilu Hup, C/D, WBF/Dr Number 1. Rushton turbine WB) = 0.2, LB/p.= 0.25 0.33 1 0.33 0.1 OL 4 HD Ci D DT a) Find the rate of heat released from the respiration, met: [9 marks] b) Find the rate of heat released from agitation, agi: (1 W = kg m? s-) [6 marks] c) Find the total rate of heat required to be removed from the system. Assume no other heat generated or consumed by the system. [2 marks] d) 25 mol/s of cooling water is used to remove the heat calculated in c) to maintain the temperature of the reactor at 30C. The cooling water flows in at 10C and flows out at 25C. Calculate the specific heat capacity of the cooling water in J/kgC using the given information. [3 marks] The organism inside a reactor is Pischia Pastoria growing on hexadecane as substrate. The respiration reaction is as below: C18H34 + a0, + bNH, CH1.6600.27No.2 + dC022 +eH20 A student has solved the stoichiometry of this reaction, gaining the unknowns below. a = 12.48; b = 2.13; c = 10.64; d = 5.37; e = 11.36 The specific growth rate of the organism is 0.5 hand the biomass is 1 g/L. The broth has a viscosity of 0.05 Pas and a density of 10 g/cm3. The culture is grown in a bioreactor with a height of 2 m for 20 hours using Rushton turbine at 150 rpm. Constant for Np in laminar condition is 70, while constant for Np in turbulence condition is 0.35. The bioreactor is in cylinder in shape and detailed dimension of the bioreactor is as stated below. WBF Baffles Impeller Pilu Hup, C/D, WBF/Dr Number 1. Rushton turbine WB) = 0.2, LB/p.= 0.25 0.33 1 0.33 0.1 OL 4 HD Ci D DT a) Find the rate of heat released from the respiration, met: [9 marks] b) Find the rate of heat released from agitation, agi: (1 W = kg m? s-) [6 marks] c) Find the total rate of heat required to be removed from the system. Assume no other heat generated or consumed by the system. [2 marks] d) 25 mol/s of cooling water is used to remove the heat calculated in c) to maintain the temperature of the reactor at 30C. The cooling water flows in at 10C and flows out at 25C. Calculate the specific heat capacity of the cooling water in J/kgC using the given information. [3 marks]
