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1
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Steady state characteristics of a three-phase fluidized bed bioreactor with partial biomass recirculation

100%
Skoneczny S., Tabiś B., Skoneczny S., Tabiś B.
Chemical and Process Engineering
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2019
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vol. 40
|
issue 1
2
Content available remote

MATHEMATICAL MODELLING AND STATIONARY CHARACTERISTICS OF A TWO-PHASE FLUIDISED-BED BIOREACTOR WITH EXTERNAL AERATION

100%
Tabiś B., Stryjewski W. S.
Chemical and Process Engineering
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2013
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vol. 34
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issue 4
435-448
EN
A mathematical model for a two-phase fluidised bed bioreactor with liquid recirculation and an external aerator was proposed. A stationary nonlinear analysis of such a bioreactor for an aerobic process with double-substrate kinetics was carried out. The influences of a volumetric fraction of solid carriers in the liquid phase, the rate of active biomass transfer from the biofilm to the liquid, the concentration of carbonaceous substrate, the mean residence time of the liquid and the efficiency of the external aerator on the steady state characteristics of the bioreactor were described. A method for determination of the minimal recirculation ratio related to oxygen demand and fluidised bed conditions was presented. On the basis of the obtained results, it is possible to choose reasonable operating conditions of such plants and to determine constraints, while considering acceptable concentrations of a toxic substrate being degraded.
3
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Nonlinear Dynamics of a Controlled Stirred Tank Bioreactor With Predator-Prey Relationship

100%
Tabiś B., Skoneczny S., Stryjewski W. S.
Chemical and Process Engineering
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2014
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vol. 35
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issue 3
349-360
EN
The paper presents the dynamic characteristics of a continuous tank bioreactor for microbiological process, with a developed predator-prey food chain. The presence of the predator microorganism considerably influences the position and stability character of steady-states. There appears to exist a wide range of unstable steady-states and high-amplitude oscillations of state variables. Without automatic control, the system can operate only in unsteady conditions. From technological point of view, this circumstance is unfavorable. It was shown that oscillations can be removed by employing automatic control with continuous P or PI controllers. Moreover, the use of a controller with integrating element causes removal of the predator from the bioreactor. The paper discusses an application of this phenomenon for practical purposes.
4
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Nonlinear Dynamics of a Controlled Stirred Tank Bioreactor With Predator-Prey Relationship

86%
Tabiś B., Skoneczny S., Stryjewski W. S.
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|
issue 3
5
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MATHEMATICAL MODELLING AND STATIONARY CHARACTERISTICS OF A TWO-PHASE FLUIDISED-BED BIOREACTOR WITH EXTERNAL AERATION

86%
Tabiś B., Stryjewski W. S.
Chemical and Process Engineering
|
2013
|
issue 4
6
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Dynamical and technological consequences of multiple isolas of steady states in a catalytic fluidised-bed reactor

86%
Bizon K.
Chemical and Process Engineering
|
2017
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vol. 38
|
issue 3
7
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Determination of Hopf bifurcation sets of a chemical reactors by two-parameter continuation method

72%
Berezowski M., Berezowski M.
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vol. 41
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issue 3
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