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:-1. Dioniz...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autor principal: Zainab Yaquob Atiya
Formato: article
Lenguaje:EN
Publicado: Al-Khwarizmi College of Engineering – University of Baghdad 2012
Materias:
Acceso en línea:https://doaj.org/article/848a62dfb4df428dbc7a83681d8f5f8a
Etiquetas: Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
id oai:doaj.org-article:848a62dfb4df428dbc7a83681d8f5f8a
record_format dspace
spelling oai:doaj.org-article:848a62dfb4df428dbc7a83681d8f5f8a2021-12-02T04:45:01ZEstimation of Volumetric Mass Transfer Coefficient in Bioreactor1818-1171https://doaj.org/article/848a62dfb4df428dbc7a83681d8f5f8a2012-01-01T00:00:00Zhttp://www.iasj.net/iasj?func=fulltext&aId=56323https://doaj.org/toc/1818-1171This 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:-1. Dionized water2. 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 Techniqueagitation and aerationHennerys law constant of oxygen.Chemical engineeringTP155-156Engineering (General). Civil engineering (General)TA1-2040ENAl-Khawarizmi Engineering Journal, Vol 8, Iss 3, Pp 75-80 (2012)
institution DOAJ
collection DOAJ
language EN
topic Dynamic Technique
agitation and aeration
Hennerys law constant of oxygen.
Chemical engineering
TP155-156
Engineering (General). Civil engineering (General)
TA1-2040
spellingShingle Dynamic Technique
agitation and aeration
Hennerys law constant of oxygen.
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:-1. Dionized water2. 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/848a62dfb4df428dbc7a83681d8f5f8a
work_keys_str_mv AT zainabyaquobatiya estimationofvolumetricmasstransfercoefficientinbioreactor
_version_ 1718401090670559232