PPT Slide
The model we presented in this study was useful for the analysis and simulation of citric acid production by the biofilm. This procedure will be applied for the production of other useful materials by the biofilm.
A/V specific biofilm surface area
C citric acid concentration
DQ oxygen diffusion coefficient in trough medium
DQf oxygen diffusion coefficient in biofilm
Ko1 saturation constant of oxygen for growth
Ko2 saturation constant of oxygen for maintenance metabolism
Ks saturation constant of sugar for maintenance metabolism
Kx saturation constant of sugar for growth
k1 maximum specific growth rate of cells
M biofilm surface density
Me biofilm surface density at the end of culture
m maintenance coefficient
Qf dissolved oxygen concentration in biofilm
QS saturated dissolved oxygen concentration
R citric acid production rate
S sugar concentration in medium outside of biofilm
Sf sugar concentration in medium inside of biofilm
Y1 weight base yield coefficients of citric acid against consumed sugar associated with growth
Y2 weight base yield coefficients of citric acid against sugar consumed
associated with maintenance metabolism
Yoc proportional coefficient of oxygen consumption to citric acid production
z distance from outer surface of biofilm
r cellular density in biofilm