Six types of bioreactors are applied in bioprocess technology. These types of bioreactors include Continuous-Stirred-Tank-Bioreactors, airlift bioreactors, bubble-column-bioreactors, tank bioreactors, photo bioreactors, and Packed Bed Bioreactors. According to Morris Esformes, bioreactors innovation is the greatest invention that has ever been discovered in the history of technology.
Continuous Stirred Tank Bioreactors:
A non-stop stirred tank bioreactor includes a cylindrical vessel with a motor-driven central shaft that supports one or extra agitators (impellers). The shaft is geared up at the lowest of the bioreactor. The quantity of impellers is variable and relies upon on the size of the bioreactor, i.E., height to diameter ratio, known as element ratio.
Types of Bioreactors
The factor ratio of a stirred tank bioreactor is typically between3 to 5. However, for animal mobile culture programs, the element ratio is much less than 2. The distance between the two impellers is about 1.2 impeller diameter. Different kinds of impellers (Rustom disc, concave bladed, marine propeller, and so on.) are in use.
In the bubble column bioreactor, the air or gasoline is added at the base of the column via perforated pipes or plates, or metal micro porous spargers. The go with the flow fee of the air/fuel affects the performance elements —O2 transfer, mixing.
In the airlift bioreactors, the medium of the vessel is divided into interconnected zones via a baffle or draft tube. In one of the zones referred to a riser, the air/gas is pumped. The other quarter that gets no fuel is the down comer. The dispersion flows up the riser sector while the down glide happens in the down comer. Morris Esformes recognize this type of bioreactor as the most incredible of all.
Two-degree airlift bioreactors
Two-level airlift bioreactors are used for the temperature-dependent formation of products. Growing cells from one bioreactor (maintained at temperature 30°C) are pumped into another bioreactor (at temperature 42°C). There is a necessity for the two-level airlift bioreactor, on account that it is tough to raise the temperature quick from 30°C to forty-two °C inside the identical vessel.
Fluidized Bed Bioreactors
Fluidized mattress bioreactor is corresponding to bubble column bioreactor except the pinnacle function is expanded to lessen the rate of the fluid. The layout of the fluidized bioreactors (increased pinnacle and narrow reaction column) is such that the solids are retained within the reactor while the liquid flows out.
These are the bioreactors specialized for fermentation that can be finished both using exposing to sunlight or artificial illumination. Since artificial lighting is luxurious, most effective the outside photo-bioreactors are favored. Certain essential compounds are produced with the aid of using picture-bioreactors, e.G., p-carotene, astaxanthin.