Upper bioreactors and Types of bioreactors
In an air conditioner, mixing is carried out without any mechanical stirrer. Upper bioreactors are used to grow tissue because tissues are susceptible to stress and conventional mixing is not possible. There are various shapes of airborne bioreactors. In the usual form, the air flows down and the center of the air flow traction tube through a playback ring, and therefore, the apparent fluid density in the tube is reduced relative to the circular space inside the bioreactor. The flow passes through the airflow pipe to the upper atmosphere of the bioreactor, where the excess air and side products, CO 2, it will be released. The unheated liquid flows downwards, in the opposite direction
and in the outer space, to the end of the bioreactor, and cooling can be achieved by constructing an air flow traction tube with an internal heat exchanger, or using a heat exchanger in Provide an external re-cycle.
Advantages of the upward bioreactor include:
- In low stress, there is little mixing, which means that the bioreactor can be used to grow plant or animal cells.
- Since there is no agitator, sterility is easily maintained.
- In a large reservoir where the height of the liquid can be up to 60 meters, the pressure at the end of the tank increases the solubility of the oxygen and increases the amount of K L a .
- Extremely large containers can be made. In a single-cell protein unit, the reactor has a total volume of 2300 cubic meters (a column with a diameter of 7 meters and a height of 60 meters and a reactor working volume of 1460 cubic meters). In addition, in this reactor, where live microorganisms for SCP have been grown on methanol, biochemical reactions release extreme heat. Removal of this heat over the hot reaction is not possible by the design of a conventional mixing tank.
In the application of airborne bioreactors, there are several types of processors. The most common airborne bioreactors are bioreactors that are cyclic under pressure, internal cycle and external cycle.
History of sewage treatment
Types of bioreactors
Aerobic bioreactors are classified into four types depending on how the gas is discharged.
- Agitator Repository: The most common type of bioreactor used in the industry. The air flow stroke is adjusted to provide a defined rotation pattern.
- Pressurized and rotary air bioreactors: The gas is rotated by the pressurized air tool.
- Cycle bioreactor: A modified version of the airborne air system in which a pump, air, and fluid pass through the tank.
- Fixed systems: Air rotates from a layer of living microorganisms that grow on solid surfaces. In a constant bioreactor, a biocatalyst is used particle to produce enzymes and convert penicillin to 6-amino-penicillin acid .
- Fluid bed: When the filled substrates act in a flow-up manner, the bed is stabilized at high flow rates. Prevention of female canal and bedding. Its usual use in wastewater treatment and vinegar production.
- Fragrant substrate: In another form of filled substrate, the fluid is sprayed above the bed and the droplets move down the bed. The air enters from the bottom. Because the liquid is not continuous in the column, so the air moves easily around the particles of the bed. This kind of bioreactor is widely used in aerobic operations on wastewater.
- The discontinuous mixing and feeder reactor: Starting with a relatively dilute solution from the substrate provides control and monitoring of the substrate concentration. Avoid high temperatures. The discontinuous feeding for bread yeast is used to overcome the suppression of catabolite and the need for oxygen to be controlled. This type is also commonly used to produce penicillin.
- Discontinued Reactor: There are three types of bioreactor operations. (A) discontinuous feeding; (b) discontinuous feeding; and (c) continuous. Industrial bioreactors can withstand the pressure of 3 positive atmospheres. Large generators with a transparent and transparent vertical glass are equipped to monitor the contents of the reactor. Auxiliary equipment for pH sensors, temperature, and dissolved oxygen are the minimum equipment. A steam sterilization sampling valve is provided. Mechanical stirrers are mounted on the top or bottom of the tank for proper mixing.
Isolation of microbial biomass
Selection of operational policy has a sufficient effect on the percentage of substrate transformation, the product’s potential for contamination and the reliability of the process.
 6-amino penicillanic acid
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