Experimental Study of Biodegradation of Ethanol and Toluene Vapors

φ = −θ
b
⋅ν
(5-31)
φ
b
= 1.27ν
+ ν
(5-31a)
1
2
φx = −ν 1
(5-31b)
where φ
b
and φ x
represent the flow of ethanol and biomass into the system (C-mol/L
h), respectively. Therefore, by coupling Equations (5-28c), (5-28d) with Equations
(5-31a) and (5-31b), the relationship between the flows of benzyl alcohol and biomass
under steady state and continuous mode conditions can be expressed by:
1
φ
b
= ( −φ
x
) + mbC
x
(5-32)
Y
max
bx
where the relations for the defined maximal yields and maintenance and the metabolic
model parameters (K,δ, m ATP ) are the same forms as indicated in Equations (5-30a) and
(5-30b).
5.3 Estimation of Parameters
5.3.1 Estimation of Parameters from Batch Growth Results
In this work, it is assumed that the substrate concentration in the media is rate
controlling according to simplistic non-structured models. Thus, for experiments
conducted in a batch reactor, the overall conversion rates of the controlled components
can be represented by
dC
r = (5-33)
dt
where r is the overall conversion rate of the key metabolic component (C-mol/L-h), C is
the concentration of the key metabolic component (C-mol/L).
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