NOMENCLATURE (Calculation of Fermentation Parameters..)

NOMENCLATURE

 D  dilution rate (h-1)
 F  reactor feeding rate (L/h)
 MP  mass of product in the fermenting medium (g)
 MS  mass of substrate in the fermenting medium (g)
 MX  mass of biomass in the fermenting medium (g)
 P  product concentration measured in the aqueous phase (g/L)
 P’  product concentration calculated by Equation (7) (g/L)
 Q  process productivity (*) (g/Lxh)
 Q’  process productivity (**) (g/L.h)
 RP  product production rate (*) (g/Lxh)
 R’P  product production rate (**) (g/Lxh)
 RS  substrate consumption rate (*) (g/Lxh)
 R’S   substrate consumption rate (**)(g/Lxh)
 RX  biomass growth rate (g/Lxh)
 S  substrate concentration measured in the aqueous phase (g/L)
 S’  substrate concentration calculated by Equation (6) (g/L)
 S0  substrate concentration of the feeding mash (g/L)
 t  time (h)
 V  volume of the fermenting medium (L)
 Va  volume of the aqueous phase (L)
 Vi  volume of the inoculum (L)
 X  biomass concentration (dry matter) (g/L)
 YP  product yield factor (*) (g/g)
 Y’P  product yield factor (**) (g/g)
 YX  biomass yield factor (*) (g/g)
 Y’X  biomass yield factor (**) (g/g)
 θ  duration of the reactor feeding phase (h)
 ρ  density of the microorganism (g/L)
 σ  fraction of dry matter in the biomass (-)

i subscript indicating the value at t = 0
f subscript indicating the value at t = θ

(*) calculated disregarding the biomass volume
(**) calculated taking account of the biomass volume

Forrás

Calculation of Fermentation Parameters from the Results of a Fed-Batch Test Taking Account of the Volume of Biomass in the Fermenting Medium

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