fulltext.study @t Gmail

Stabilization of unstable steady states of a continuous stirred tank bioreactor with predator–prey kinetics

Paper ID Volume ID Publish Year Pages File Format Full-Text
23488 43443 2013 7 PDF Available
Title
Stabilization of unstable steady states of a continuous stirred tank bioreactor with predator–prey kinetics
Abstract

•We analyze the nonlinear dynamics of CSTBR with a developed predator–prey trophic chain.•A method of stabilizing unstable steady states by using continuous controllers is shown.•The oscillations can be removed by employing continuous P or PI controllers.•A new, hitherto unknown phenomenon was observed.•By using PI-controller, the predator can be completely eliminated from the system.

Nonlinear properties of a bioreactor with a developed microbiological predator–prey food chain are discussed. The presence of the predator microorganism completely changes the position and stability of the stationary states. A wide range of unstable steady states appears, associated with high amplitude oscillations of the state variables. Without automatic control such a system can only operate in transient states, with the yield undergoing periodic changes following the dynamics of the stable limit cycle. Technologically, this is undesirable. It has been shown that the oscillations can be removed by employing continuous P or PI controllers. Moreover, with a PI-controller, the predator can be eliminated from the system.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Microbiological reactor; Predator–prey kinetics; Control system; Biodegradation; Nonlinear oscillation
First Page Preview
Stabilization of unstable steady states of a continuous stirred tank bioreactor with predator–prey kinetics
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us
Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Biotechnology - Volume 166, Issue 4, 20 July 2013, Pages 145–151
Authors
, ,
Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us