Volumetric mass transfer coefficient in the fermenter for Rushton turbine in three-phase system

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F17%3A43914702" target="_blank" >RIV/60461373:22340/17:43914702 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Volumetric mass transfer coefficient in the fermenter for Rushton turbine in three-phase system

Popis výsledku v původním jazyce

Waste-water treatment, fermentation, de-chlorination and hydrogenation are processes where gas-liquid-solid mass transfer can be limiting process in their utilization. The parameter which usually describes the mass transfer intensity in gas-liquid-solid system is volumetric mass transfer coefficient kLa. The aim of this work is to study experimentally the effect of solid particles presence on kLa values using reliable measuring method. Measurements were conducted in a three phase multiple-impeller fermenter of i.d. 29 cm containing microparticles of the diameter 137 ?30 ?m. Rushton turbine of the diameter of 1/3 of the vessel diameter were used. Dissolved oxygen (DO) polarographic probe were used for measurements. Dynamic pressure method (DPM) has been chosen for the measurement of kLa. Based on experimental kLa values, correlations are established, which describe mass transfer in fermenter with microparticles. Usually, the kLa correlations are based on gassed power input and superficial gas velocity. We tested several correlation types, evaluated their empirical parameters and proposed the correlation shapes suitable for fermenter design, operating and scale-up under the conditions, where solid particles affect the interfacial mass transfer.

Název v anglickém jazyce

Volumetric mass transfer coefficient in the fermenter for Rushton turbine in three-phase system

Popis výsledku anglicky

Waste-water treatment, fermentation, de-chlorination and hydrogenation are processes where gas-liquid-solid mass transfer can be limiting process in their utilization. The parameter which usually describes the mass transfer intensity in gas-liquid-solid system is volumetric mass transfer coefficient kLa. The aim of this work is to study experimentally the effect of solid particles presence on kLa values using reliable measuring method. Measurements were conducted in a three phase multiple-impeller fermenter of i.d. 29 cm containing microparticles of the diameter 137 ?30 ?m. Rushton turbine of the diameter of 1/3 of the vessel diameter were used. Dissolved oxygen (DO) polarographic probe were used for measurements. Dynamic pressure method (DPM) has been chosen for the measurement of kLa. Based on experimental kLa values, correlations are established, which describe mass transfer in fermenter with microparticles. Usually, the kLa correlations are based on gassed power input and superficial gas velocity. We tested several correlation types, evaluated their empirical parameters and proposed the correlation shapes suitable for fermenter design, operating and scale-up under the conditions, where solid particles affect the interfacial mass transfer.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20401 - Chemical engineering (plants, products)

Projekt

<a href="/cs/project/GA15-21715S" target="_blank" >GA15-21715S: Experimentální studie přenosu hmoty kapalina-plyn za přítomnosti pevných částis a ve viskózní vsádce</a><br>

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

PROCEEDINGS 44th International Conference of the Slovak Society of Chemical Engineering

ISBN

978-80-89597-58-1

ISSN

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e-ISSN

neuvedeno

Počet stran výsledku

10

Strana od-do

794-803

Název nakladatele

Slovak Society of Chemical Engineering

Místo vydání

Bratislava

Místo konání akce

Demänovská dolina

Datum konání akce

22. 5. 2017

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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