◆Classification of bioreactors 

Different types of fermenters are continuously stirred tanks, including gas lift, fluidized bed membrane fermenters, photobioreactors, and bubble column fermenters.

1 Continuous stirred tank bioreactor

2 Bubble column bioreactor

3 Gas lift bioreactor

4 Packed bed reactor

5 Fluidized bed bioreactor

6 Photobioreactor

7 Membrane bioreactor

8 Rotating drum bioreactor

9 Mist bioreactor

10 Immobilized cell bioreactor

11 Activated sludge bioreactor

12 Submerged membrane bioreactor

13 Reverse membrane bioreactor

Bioreactor Applications

•A bioreactor may be a reference to a device or system designed to produce tissue or cells in a cell culture environment.

•They are currently being developed for tissue engineering.

•The bioreactor is modular and performs all fermentation processes in a closed environment.

•Bioreactors play a vital role in biological processes. Bioreactors with stirred tanks are often used during fermentation processes.

•Solid-state bioreactors are widely used in industry due to their simple technology and higher yields.

•Ethanol is produced by Saccharomyces cerevisiae, a living fungus.

•Organic acids, such as butyric acid and acetic acid, are produced in bioreactors by Eubacterium rimosumensis.

•Thienomycin is an antibiotic that is also made in a bioreactor.

•Glucose enzyme production occurs in pullulan, a bioreactor.

Q&A

Q: What is a bioreactor?

A: A bioreactor is a device that grows cells under controlled conditions.

Q: What is a bioreactor used for?

A: A bioreactor is a device that allows bacteria to grow and ferment under controlled conditions. They are commonly used in industry to make pharmaceuticals and food products, such as beer and wine. It is an industrial device that uses microorganisms such as bacteria to break down organic materials into useful chemicals and energy, such as hydrogen for fuel cells. Bioreactors can be found in wastewater treatment plants, manufacturing pharmaceuticals, and food processing facilities.

Q: How do bioreactors work?

A:Bioreactors work by pumping nutrients into a solution of water and microorganisms, such as bacteria, algae, yeast, fungi or protozoa. Organisms consume nutrients until they reach a certain density, at which point they produce additional waste. Bioreactors can be used to produce hydrogen for fuel cells, ethanol from sugar cane molasses, or synthetic chemicals. An example of a typical bioreactor setup includes: an air compressor, a reservoir containing microorganisms, a pump, tubing, diffuser plates to diffuse the nutrient flow, and monitoring equipment.

Q: What does a bioreactor do?

A: Bioreactors are used to grow cells in the laboratory. Cells in bioreactors grow much faster than cells grown in petri dishes or flasks. Additionally, the ability to control temperature and pH levels within bioreactors allows scientists to study cell growth under controlled conditions.

Q: What is the difference between traditional membrane bioreactor and reverse membrane bioreactor?

A:

Conventional membrane bioreactor

Traditional membrane bioreactor designs are either internal or external. The pressure gradient acts as an acceleration. Mass transfer mechanisms occur through convection and diffusion processes. Living cells are fed with microorganisms or other types of food that circulate freely within the culture medium.

Inversion membrane bioreactor

In the case of RMBR, it is a bioreactor with an embedded structure where the concentration gradient acts as the force driving the process and the mass transfer mechanism occurs through diffusion. Live cells cannot be fed with feed. They must be isolated and preserved within their membra