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Title: Types of Bioreactor
Description: Complete detail about bioreactor, its application in industry, advantages and disadvantages of using bioreactor. These notes help students very much.
Description: Complete detail about bioreactor, its application in industry, advantages and disadvantages of using bioreactor. These notes help students very much.
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Bioreactors
A bioreactor is a vessel in which a chemical
process is carried out which involves
organisms or biochemically active substances
to produce our desire products
...
Bioreactor can be use in a lab or at
industrial scale
...
Stirred Tank Bioreactor
Mixing method:
Mechanical agitation
Baffles are usually used to reduce
vortexing
...
• High shear forces may damage
cells
...
•
Size limitations by Motor size , shaft length & weight
...
Bubble column reactor
Mixing method: Gas sparging
Gas-liquid mass transfer coefficients depend
largely on bubble diameter and gas hold-up
...
• High pressure air required
...
3
...
Liquid circulates in an airlift reactor
as a result of density difference
between riser and downcomer
...
•
Very low cost
Disadvantages:
•
greater air and high pressure needed
...
4
...
• Working:
• Filled with packed material
...
• Reaction take place on the surface of
catalyst
...
Advantages & Disadvantages
Advantages:
•
Higher conversion per unit mass
Catalyst then other catalytic reactors
...
•
Continuous operation
•
Effective at high temperature & pressure
...
• Difficult to clean
...
• Undesirable side reactions
...
Trickle bed Bioreactor
• A trickle-bed reactor (TBR)
• It is a chemical reactor
...
• It use in the downward movement
of a liquid and gas over a packed
bed of catalyst particles
...
• Immobilized enzyme reaction
...
Booth liquid and solid phase can use in it
...
More efficient
Sterilized reaction
...
Disadvantages:
• The hydrodynamics in the reactor are extremely complex
...
• unsteady state operation
...
Fluidized bed reactor
• FBR is a type of reactor
device that can be used to
carry out a variety of
chemical reactions
...
This
process, known as
fluidization
...
Advantages & Disadvantages
Advantages:
•
Uniform particle mixing
...
•
Ability to operate reactor in continuous state
...
•
Pumping requirement and pressure drop
...
•
Erosion of internal components
...
7
...
Working:
• Process of photosynthesis
use to generate biomass from
light and carbon dioxide
within the artificial
environment
...
A photo bioreactor allows
• much higher growth rates
• purity levels as in natural
environment
...
• Large surface to volume ratio
...
• Reduction in evaporation of growth
medium
...
Disadvantages:
• Capital cost is very high
...
8
...
• It widely used for
municipal and industrial
wastewater treatment
...
e
...
• Substrate and enzyme can be easily replaced
...
Disadvantages:
• High operating cost
...
9
...
• High pressure gas is used
...
• For semi-liquid material
...
• Also used for water
treatment
...
•
Good mixing facilitates
better growth
and impart less
hydrodynamics stress
Title: Types of Bioreactor
Description: Complete detail about bioreactor, its application in industry, advantages and disadvantages of using bioreactor. These notes help students very much.
Description: Complete detail about bioreactor, its application in industry, advantages and disadvantages of using bioreactor. These notes help students very much.