6.2.2 Presentation of the chemostat properties The 100%live cell balance equation Change=Input -Outlet +Production consumption d二 d at steady state dX/dt =0
6.2.2 Presentation of the chemostat properties D V F = = at steady state dX/dt =0 = dt dX X V F − + X The 100% live cell balance equation Change= Input –Outlet +Production - consumption
The live cell balance equation Change=Input -Outlet +Production -consumption dXy二 dt +LX L=OD+ka S u=M max S+Ks S= K L max-Ll DKs Ll max-D
The live cell balance equation Change= Input –Outlet +Production - consumption = dt dXv X V F − + X −kdXv = D + kd S Ks S + = max − = max Ks S D DK S s − = max
1007 10 10 S; DOT (8)104 (sw 6x)s 0+ 0+ 0 0 D(h-1) Derit Standard representation of a chemostat.The effect of dilution rate on the common process variables X,S,DOT and biomass productivity,rx,are shown. Parameters used in the simulation:S9kg/m Hmax=0.8h Ks.s=0.1 kg m Yem=0.6 kg kg-1;qm=0.025 kg kg-1 h-1 Yx/o 1kg kg-1;8=1;kd=0
10 Ks=1kgm-3 Ks =0.1kg m-3 Ks =0.01kg m-3 E )X's 0十 0 D(h-) 10 D(h-1) 10 D(h-1) The effect of the saturation constant(Ks)of the lim iting substrate on the outlet concentration of this com pound in a chemostat
The effect of the saturation constant(Ks ) of the limiting substrate on the outlet concentration of this compound in a chemostat
The concentration of viable cells (Xv) Change=Input -Outlet +Production -consumption = di -gsXv 9s= Yx/s -8--货 =2x(-S=4k8-s Xv=Yxis(Si-S)
The concentration of viable cells (Xv) Change= Input –Outlet +Production - consumption = dt dS Si V F S V F − − qsXv x s s Y q / = x s v i Y X S S V F dt dS / ( ) = − − Y / (Si S) D Xv = x s − Y / (S S) D k D Xv x s i d − + = Xv = YX / S(Si − S)