Continuously Stirred Tank Reactor
Continuously Stirred Tank Reactor - Related Videos
11:31
Continuously-stirred Anaerobic Digester to Convert Organic Wastes into Biogas: System Setup and Basic Operation
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Cited by 34 •
2012
Laboratory-scale anaerobic digesters allow scientists to research new ways of optimizing existing applications of anaerobic biotechnology and to evaluate the methane producing potential of various organic wastes. This article introduces a generalized model for the construction, inoculation, operation, and monitoring of a laboratory-scale continuously stirred anaerobic digester.
09:40
Batch and Continuous Bioreactors
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2023
Bioreactors are used to grow organisms in large volumes, thereby enabling the production of mass quantities of the target product. These reactors can be batch reactors, which contain all of the components needed for cell growth, or continuous reactors, which have inlet and outlet ports allowing for the addition of fresh growth media and the removal of cell waste. This video presents batch and continuous reactors and demonstrates the use of bioreactors to grow bacteria in the laboratory.
11:00
Liquid Phase Reactor: Sucrose Inversion
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2023
Source: Kerry M. Dooley and Michael G. Benton, Department of Chemical Engineering, Louisiana State University, Baton Rouge, LA Both batch and continuous flow reactors are used in catalytic reactions. Packed beds, which use solid catalysts and a continuous flow, are the most common configuration. In the absence of an extensive recycle stream, such packed bed reactors are typically modeled as "plug flow". The other most common continuous reactor is a stirred tank, which is assumed to be perfectly...
08:45
Study of Siphon Breaker Experiment and Simulation for a Research Reactor
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Cited by 2 •
2017
The siphon breaking phenomenon was investigated experimentally and a theoretical model was proposed. A simulation program based on the theoretical model was developed and the results of the simulation program were compared with experimental results. It was concluded that the results of the simulation program matched the experimental results well.
08:56
Catalytic Reactor: Hydrogenation of Ethylene
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2023
Source: Kerry M. Dooley and Michael G. Benton, Department of Chemical Engineering, Louisiana State University, Baton Rouge, LA The hydrogenation of ethylene (C2H4) to ethane (C2H6) has often been studied as a model reduction reaction in characterizing new metal catalysts.1-2 While supported nickel is not the most active metal catalyst for this reaction, it is active enough that reaction can take place at < 200°C. The reaction typically involves adsorbed, dissociated hydrogen (H2) reacting...
FAQs
Dilution rate links the incoming feed to the reactor volume, so it sets the culture’s residence time. Increasing the feed relative to volume shortens residence time and can reduce the opportunity for cells or microorganisms to grow in the vessel. If operating conditions no longer support retention, the culture may be washed out; suitable control instead supports steady-state operation.
Mechanical agitation matters because it minimizes composition differences within the tank. More uniform contact between nutrients, cells, and the liquid phase helps researchers examine reaction kinetics and mass transfer under defined conditions. In bioengineering studies, mixing therefore affects how reliably measured growth or reaction behavior reflects the intended reactor conditions rather than local concentration differences.
Steady state provides a reference condition in which continuous operation can be evaluated at defined settings. Researchers can then relate the selected dilution rate and controlled environmental variables to culture behavior, productivity, and process stability. Comparing outcomes across these conditions helps reveal how operating changes influence reactor performance without changing the continuous-flow framework.
Temperature, pH, and nutrient delivery are not merely maintenance settings; they are variables that shape biological performance inside the reactor. Keeping them controlled allows researchers to attribute changes in growth or process behavior to deliberate operating conditions. This makes the CSTR useful for examining microbial or cell systems under reproducible bioengineering conditions.
An experimental run requires coordinated control of feed flow, reactor volume, agitation, temperature, pH, and nutrient supply. Feed flow and volume establish dilution rate, while agitation supports uniform composition. The remaining controls create the biological environment. Holding these factors at defined settings lets researchers evaluate kinetics, mass transfer, productivity, and stability systematically.
Researchers can use a CSTR to study more than whether a culture remains in the vessel. By varying defined operating conditions, they can examine reaction kinetics, mass transfer, productivity, and process stability. The resulting observations connect flow and environmental control with biological performance, providing a practical basis for interpreting continuous-process behavior in development studies.
Continuous fermentation, wastewater treatment, and bioprocess development are major application areas for this reactor model. In fermentation, the controlled feed and culture environment support study of microbial or cell growth. In wastewater treatment, the continuous-reactor framework supports investigation of treatment behavior. Bioprocess developers use it to test performance and stability under defined conditions.