(1) Calculate the effluent concentration for a substrate exhibiting Haldane kinetics from a CSTR (continuously stirred tank reactor) and (2) compare this with the value if the substrate were not inhibitory (S2/Ki = 0) for the following conditions: V = 24 m3 Q = 9 m3/d S0 = 400 mg/L Y = 0.5 mg/mg q = 7.5 g/g•d K = 7 mg/L b = 0.1 d-1 Ki = 15 mg/L
A Haldane modification of the Monod reaction is often used to describe the kinetics of substrate utilization when the substrate itself is toxic at high concentrations (phenol is an example of this).
(1) Calculate the effluent concentration for a substrate exhibiting Haldane kinetics from a CSTR (continuously stirred tank reactor) and (2) compare this with the value if the substrate were not inhibitory (S2/Ki = 0) for the following conditions:
V = 24 m3
Q = 9 m3/d
S0 = 400 mg/L
Y = 0.5 mg/mg
q = 7.5 g/g•d
K = 7 mg/L
b = 0.1 d-1
Ki = 15 mg/L
Hint: θx = (active biomass in the system)/(production rate of active biomass) = V/Q
And 1/θx = (YqS)/(K + S + S2/Ki) – b
A septic tank or sewage treatment plant discharges effluent, which is sewage treated in the tank or plant. In the last compartment, the effluent concentration is determined by combining the gas streams from each phase
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