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Wyszukujesz frazę "airlift bioreactor" wg kryterium: Temat


Wyświetlanie 1-2 z 2
Tytuł:
Continuous mathematical models of airlift bioreactors: Families, affinity, diversity and modelling for single-substrate kinetics
Autorzy:
Grzywacz, R.
Powiązania:
https://bibliotekanauki.pl/articles/185530.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
bioreaktor powietrzny
modelowanie matematyczne
symulacja
reaktor wielofazowy
airlift bioreactor
single-substrate kinetics
mathematical modelling
simulation
multiphase reactor
Opis:
This paper presents a method of describing an airlift bioreactor, in which biodegradation of a carbonaceous substrate described by single-substrate kinetics takes place. Eight mathematical models based on the assumption of liquid plug flow and axial dispersion flow through the riser and the downcomer in the reactor were proposed. Additionally, the impact of degassing zone with assumed complete mixing on the obtained results was analyzed. Calculations were performed for two representative hydrodynamic regimes of reactor operation, i.e. with the presence of gas bubbles only within the riser and for complete gas circulation. The conclusions related to the apparatus design and process performance under sufficient aeration of the reaction mixture were drawn on the basis of the obtained results.
Źródło:
Chemical and Process Engineering; 2012, 33, 2; 291-309
0208-6425
2300-1925
Pojawia się w:
Chemical and Process Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Models of airlift bioreactors for double-substrate kinetics. The analysis of sufficient oxygenation conditions with a view of mathematical model choice
Autorzy:
Grzywacz, Robert
Powiązania:
https://bibliotekanauki.pl/articles/185768.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
airlift biorector
double-substrate kineticc
modelling
simulation
multiphase bioreactor
kinetyka podwójnego substratu
modelowanie
symulacja
bioreaktor wielofazowy
Opis:
The quantitative description of an airlift bioreactor, in which aerobic biodegradation limited by carbonaceous substrate and oxygen dissolved in a liquid takes place, is presented. This process is described by the double-substrate kinetics. Mathematical models based on the assumption of plug flow and dispersion flow of liquid through the riser and the downcomer in the reactor were proposed. Calculations were performed for two representative hydrodynamic regimes of reactor operation, i.e. with the presence of gas bubbles only within the riser and for complete gas circulation. The analysis aimed at how the choice of a mathematical model of the process would enable detecting the theoretical occurrence of oxygen deficiency in the airlift reactor. It was demonstrated that the simplification of numerical calculations by assuming the “plug flow” model instead of dispersion with high Péclet numbers posed a risk of improper evaluation of the presence of oxygen deficiency zones. Conclusions related to apparatus modelling and process design were drawn on the basis of the results obtained. The paper is a continuation of an earlier publication (Grzywacz, 2012a) where an analysis of single-substrate models of the airlift reactor was presented.
Źródło:
Chemical and Process Engineering; 2019, 40, 1; 3-19
0208-6425
2300-1925
Pojawia się w:
Chemical and Process Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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