It is desired to produce 500 kg of ethanol per hour in a continuous fermentation in a system with cell recycling. The feed culture medium contains glucose as a substrate with a concentration of 100 g/L. The kinetic expressions of growth and substrate consumption are given by: a) Knowing that X3/X1=B =3, X2=0,5X1 , that the desired conversion is 95% and that the substrate to product yield coefficient is 90% of the theoretical one, calculate the total volume of the fermenter and the recycle ratio. b) If, instead of the process with recycle, a process without recycle was used, what would be the volume of the fermenter for the same production, conversion and yield?
It is desired to produce 500 kg of ethanol per hour in a continuous fermentation in a system with cell recycling. The feed culture medium contains glucose as a substrate with a concentration of 100 g/L. The kinetic expressions of growth and substrate consumption are given by: a) Knowing that X3/X1=B =3, X2=0,5X1 , that the desired conversion is 95% and that the substrate to product yield coefficient is 90% of the theoretical one, calculate the total volume of the fermenter and the recycle ratio. b) If, instead of the process with recycle, a process without recycle was used, what would be the volume of the fermenter for the same production, conversion and yield?
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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It is desired to produce 500 kg of ethanol per hour in a continuous fermentation in a system with cell recycling. The feed culture medium contains glucose as a substrate with a concentration of 100 g/L. The kinetic expressions of growth and substrate consumption are given by:
a) Knowing that X3/X1=B =3, X2=0,5X1 , that the desired conversion is 95% and that the substrate to product yield coefficient is 90% of the theoretical one, calculate the total volume of the fermenter and the recycle ratio.
b) If, instead of the process with recycle, a process without recycle was used, what would be the volume of the fermenter for the same production, conversion and yield?
Transcribed Image Text:Kp
S
Ks+ S P + Kp
Yx/s= 0,10 Ex/gs; |max = 0,41 h 1; Ks = 0,22 g/L; Kp = 43 g/L
μ = μmax."
Hs
1
μ
Yx/s
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