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

• Authors: Bolesław Tabiś , Wojciech S. Stryjewski
• Languages of publication: EN

Abstracts

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.

Keywords

EN

bioreactor; fluidised-bed; external aerator; biofilm; steady states

• Publisher: De Gruyter Open
• Journal: Chemical and Process Engineering
• Year: 2013
• Volume: 34
• Issue: 4
• Pages: 435-448

Dates

published

1 - 12 - 2013

online

22 - 01 - 2014

Contributors

author

Bolesław Tabiś

• Cracow University of Technology, Department of Chemical and Process Engineering, ul. Warszawska 24, 31-155 Kraków, Poland

author

Wojciech S. Stryjewski

• Cracow University of Technology, Department of Chemical and Process Engineering, ul. Warszawska 24, 31-155 Kraków, Poland

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Identifiers

DOI

10.2478/cpe-2013-0036