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The Zymomonas mobilis cells are used for chemostat culture in a 60 m^3 fermenter. The feed contains 12 g l^-1 glucose; Ks for the organism is 0.2 g l^-1. What flow rate is required for a steady-state substrate concentration of 1.5 g l^-1?(a) 15.6 m^3 h^-1(b) 15.8 m^3 h^-1(c) 15.4 m^3 h^-1(d) 15.2 m^3 h^-1The question was asked in my homework.Origin of the question is Ideal Reactor Operation in division Reactor Engineering of Bioprocess Engineering

Answer»

Right CHOICE is (a) 15.6 m^3 h^-1

Easiest explanation: Yxs = 0.06 g g^-1; YPX = 7.7 g g^-1;μmax = 0.3 h^-1; Ks = 0.2 g^-1; MS = 2.2 g g^-1 h^-l; si = 12 g 1^-1; V=60 m^3. qp = 3.4 h^-1, YPS = Ypx Yxs = 0.46 g g^-1.

s = 1.5 g l^-1


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