Why is the knowledge of mass transfer important in bioreactor design?

HomeWhy is the knowledge of mass transfer important in bioreactor design?
Why is the knowledge of mass transfer important in bioreactor design?

In biological multiphase systems, mass transfer takes place between two liquid phases, between a liquid and a solid phase, or between a gas and a liquid phase. In these systems, the transfer of oxygen from the gas phase to the liquid phase (where its solubility is low) is vital for the success of bioprocess.

Q. Which is an example of gas-liquid mass transfer operation?

Gas-liquid mass transfer in non-Newtonian liquid is an important example of gas absorption in pseudoplastic flow relevant to industrial process such as a fermentation broth, slurry, and fluidized bed, et al.

Q. What is gas-liquid mass transfer?

In biological multiphase systems, mass transfer takes place between two liquid phases, between a liquid and a solid phase, or between a gas and a liquid phase. In these systems, the transfer of oxygen from the gas phase to the liquid phase (where its solubility is low) is vital for the success of bioprocess.

Oxygen mass transfer in bioreactors involves many mass-transfer resistances. Among these, resistance of the gas–liquid interfacial area (a) and liquid film resistance (kL) are usually the rate-limiting steps for transfer of oxygen to or from the bulk of the liquid phase.

Q. What is external mass transfer?

External mass transfer is determined by the flow conditions at construct surfaces, while the internal mass transport depends on molecular diffusion and convection, and the internal construct structure.

Q. Which is a liquid solid mass transfer operation?

Leaching-is a treatment of a finely divided solid with a liquid. Some examples of leaching operations are oilseed extraction, extraction of sugar beets with hot water and extraction of medicinal compounds from plant roots, leaves and stems.

Q. How does mass transfer take place?

Mass transfer is the net movement of mass from one location, usually meaning stream, phase, fraction or component, to another. Mass transfer occurs in many processes, such as absorption, evaporation, drying, precipitation, membrane filtration, and distillation.

Understanding of the mass transfer behavior in bioreactors for gas treatment will result in improved reactor designs, reactor operation, and modeling tools, which are important to maximize efficiency and minimize costs.

Q. For which type of mass transfer does oxygen balance method is used?

gas-liquid transfer mass transfer
The oxygen balance technique is used for gas-gas transfer. Explanation: The oxygen balance technique is used for gas-liquid transfer mass transfer and is used for the measurement of the KLa values. It involves the measurement of several parameters such as temperature, pressure, etc. 14.

Q. What influences mass transfer?

Therefore, the effect of external mass transfer is influenced by the reaction kinetics. When the saturation coefficient KA is larger, the external Thiele modulus is larger for the external mass transfer effects to be negligible. when Kβ = 0, Eq. (16.19) reduces to a zeroth order kinetics.

Q. What is mass transfer effect?

Q. What are the types of mass transfer?

Concentration profiles

  • Mass transfer occurs because of gradient in what quantity? temperature. pressure.
  • The two main types of mass transfer are. diffusion and conduction. convection and diffusion.
  • A tank contains a uniform concentration of a chemical. The fluid in the tank is pumped into another tank.
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