Estimation of Volumetric Mass Transfer Coefficient in Bioreactor

This study is concentrated to investigate the effects of aeration and stirring speed on the volumetric mass transfer coefficient (KLa). A dynamic technique was used in estimating KLa values in order to achieve the aim of this study. This study was done in 10L bioreactor by using two medias:...

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Autor principal:	Zainab Yaquob Atiya
Formato:	article
Lenguaje:	EN
Publicado:	Al-Khwarizmi College of Engineering – University of Baghdad 2012
Materias:	Dynamic Technique Hennery’s law constant of oxygen agitation and aeration Chemical engineering TP155-156 Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/44e7796769a640de998db1bb767c0812
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spelling	oai:doaj.org-article:44e7796769a640de998db1bb767c08122021-12-02T03:16:18ZEstimation of Volumetric Mass Transfer Coefficient in Bioreactor1818-11712312-0789https://doaj.org/article/44e7796769a640de998db1bb767c08122012-08-01T00:00:00Zhttp://alkej.uobaghdad.edu.iq/index.php/alkej/article/view/140https://doaj.org/toc/1818-1171https://doaj.org/toc/2312-0789 This study is concentrated to investigate the effects of aeration and stirring speed on the volumetric mass transfer coefficient (KLa). A dynamic technique was used in estimating KLa values in order to achieve the aim of this study. This study was done in 10L bioreactor by using two medias:- Dionized water Xanthan solution (1 g /L) Moreover, the research covered a comparison between the obtained values of KLa. The Xanthan solution was used because of its higher viscosity in comparison with water. It behaves similarly to the cultivation medium when organisms are cultivated in a bioreactor. Growth of organisms in the reactor leads to a change in the viscosity of the medium which affects the mass transfer. Two variables, the effect of air flow rate (3-20 L/min) and the effect of stirring speed (250-700rpm) on KLa value were studied. Other parameters such as temperature, liquid volume, and stirrer shape and stirrer position were held constant; the results demonstrated an increase in KLa – value and mass transfer with increasing stirrer speed. Thus at higher speed, better dispersion of the bubbles was obtained. Therefore, that increased the surface / volume ratio which increased the mass transfer area i.e. KLa value. Zainab Yaquob AtiyaAl-Khwarizmi College of Engineering – University of BaghdadarticleDynamic TechniqueHennery’s law constant of oxygenagitation and aerationChemical engineeringTP155-156Engineering (General). Civil engineering (General)TA1-2040ENAl-Khawarizmi Engineering Journal, Vol 8, Iss 3 (2012)
institution	DOAJ
collection	DOAJ
language	EN
topic	Dynamic Technique Hennery’s law constant of oxygen agitation and aeration Chemical engineering TP155-156 Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	Dynamic Technique Hennery’s law constant of oxygen agitation and aeration Chemical engineering TP155-156 Engineering (General). Civil engineering (General) TA1-2040 Zainab Yaquob Atiya Estimation of Volumetric Mass Transfer Coefficient in Bioreactor
description	This study is concentrated to investigate the effects of aeration and stirring speed on the volumetric mass transfer coefficient (KLa). A dynamic technique was used in estimating KLa values in order to achieve the aim of this study. This study was done in 10L bioreactor by using two medias:- Dionized water Xanthan solution (1 g /L) Moreover, the research covered a comparison between the obtained values of KLa. The Xanthan solution was used because of its higher viscosity in comparison with water. It behaves similarly to the cultivation medium when organisms are cultivated in a bioreactor. Growth of organisms in the reactor leads to a change in the viscosity of the medium which affects the mass transfer. Two variables, the effect of air flow rate (3-20 L/min) and the effect of stirring speed (250-700rpm) on KLa value were studied. Other parameters such as temperature, liquid volume, and stirrer shape and stirrer position were held constant; the results demonstrated an increase in KLa – value and mass transfer with increasing stirrer speed. Thus at higher speed, better dispersion of the bubbles was obtained. Therefore, that increased the surface / volume ratio which increased the mass transfer area i.e. KLa value.
format	article
author	Zainab Yaquob Atiya
author_facet	Zainab Yaquob Atiya
author_sort	Zainab Yaquob Atiya
title	Estimation of Volumetric Mass Transfer Coefficient in Bioreactor
title_short	Estimation of Volumetric Mass Transfer Coefficient in Bioreactor
title_full	Estimation of Volumetric Mass Transfer Coefficient in Bioreactor
title_fullStr	Estimation of Volumetric Mass Transfer Coefficient in Bioreactor
title_full_unstemmed	Estimation of Volumetric Mass Transfer Coefficient in Bioreactor
title_sort	estimation of volumetric mass transfer coefficient in bioreactor
publisher	Al-Khwarizmi College of Engineering – University of Baghdad
publishDate	2012
url	https://doaj.org/article/44e7796769a640de998db1bb767c0812
work_keys_str_mv	AT zainabyaquobatiya estimationofvolumetricmasstransfercoefficientinbioreactor
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Estimation of Volumetric Mass Transfer Coefficient in Bioreactor

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