LS8 Biotechnology Process design summary

, PROCESS DESIGN
:




LECTURE 1



IDES OF FERMENTATION -


BIOREACTOR OPERATION



°


UNCONTROLLED FERMENTATION
"
DIFFICULT TO REPRODUCE ,
OUTCOME IS VARIABLE

(
log .
WINE , BEER ,
CHEESE , COMPOSTING ,
VINEGAR ,
BIOGAS FORMATION )
-




CONTROLLED FER MENTATIONS
:
REPRODUCIBLE AND LESS VARIATIONS (
eg
.
CITRIC ACID ,




BAKERS YEAST , PROTEIN PRODUCTION
) .




↳
BATCH ,
FED BATCH ,
CONTINUOUS




BATCH FERMENTATION
:




ALL MEDIUM INGREDIENTS PRESENT From

conrumud
BUILD INDUSTRIAL
produced SIMPLE
m UP PRODUCTS
START . .
OF .




a

SCALE




→
S =
SUBSTRATE

Xb =
Biomass

✓ L, @ WD =
VOLUME




B-ATCD CULTURE
"
SUBSTRATE CONCENTRATIONS


AFFECTS GROWTH YIELD AND GROWTH RATE .




YIELD =
CELL DENSITY =
NUMBER OF CELLS
1mL .




AMOUNT OF NUTRIENTS INCREASE
=
YIELD INCREASES

, FED -
BATCH FERMENTATION :




BATCH FERMENTATION WITH ( CONCENTRATED )

FEED .
HIGHER CELL DENSITY AND PRODUCT CDNCEN
-




o TRDTION . DUE TO SUBSTRATE LIMITATION ,
LESS IN
-




→
Just geneon FECIT @NS . WIDELY USED ON INDUSTRI > L SCALE .




CONTINUOUS FERMENTATION :




CONSTANT VOLUME
:
MATE OF ADDITION =
RATE OF REMOVAL

F- FEED =
Fout ( =
DILUTION RATE )
STEADY STATE
:
VOLUME CONSTANT
,
NUMBER OF CELLS


CONSTANT .
NUTRIENT CONCENTRATION CONSTANT




CONTINUOUS CULTURE :
GROWTH YIELD DEPENDS ON



SUBSTRATE CONCENTRATION .




GROWTH RATE DEPENDS ON DILU TON RATE




WASHOUT : Hod Dilution rate
( > the -1 . )
STEADY STATE :
CONSTANT HIGH BACTERIAL CONCENTRATION




↳ @ WTI -
NUTRIENTS AND KINETICS

[ IN RATIO
:
ELEMENTAL COMPOSITION A GENERAL
CELLULAR
OF MICROBIAL CELL -




Ca H 702N VARIES IN composition →
. WITH GROWTH CONDITIONS .
MOLS


✓ DRIES AMONG SPECIES ,

eg
.




Saccharomyces
No .co , So . a t P.o.ozsko.es 't



↳SURE THAT NOTHING IS MISSING .