Performance of Gas Induction in a Dual – Impeller Agitated Bioreactor

The rate of gas induction was measured in gas-inducing type mechanically agitated contactors provided with two impellers. A reactor of 0.5 m i.d. was used with a working capacity of 60 liters of liquid. Tap water was used as the liquid phase, and air was used as the gas phase. The bioreactor mixing...

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Autores principales:	Alaa K. Mohammed, Hassanin Ali Hussen, Safa Abid Al-Rassul
Formato:	article
Lenguaje:	EN
Publicado:	Al-Khwarizmi College of Engineering – University of Baghdad 2008
Materias:	Chemical engineering TP155-156 Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/7a39dc41c3614b97b54027d218c608c4
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spelling	oai:doaj.org-article:7a39dc41c3614b97b54027d218c608c42021-12-02T09:52:03ZPerformance of Gas Induction in a Dual – Impeller Agitated Bioreactor1818-11712312-0789https://doaj.org/article/7a39dc41c3614b97b54027d218c608c42008-12-01T00:00:00Zhttp://alkej.uobaghdad.edu.iq/index.php/alkej/article/view/604https://doaj.org/toc/1818-1171https://doaj.org/toc/2312-0789 The rate of gas induction was measured in gas-inducing type mechanically agitated contactors provided with two impellers. A reactor of 0.5 m i.d. was used with a working capacity of 60 liters of liquid. Tap water was used as the liquid phase, and air was used as the gas phase. The bioreactor mixing system consists of two equal diameter stirrers; the top impeller is shrouded-disk/curved-blade turbine with six evacuated bending blades, while the bottom impeller was disk turbine. The impeller speed was varied in the range of 50 to 800 rpm. The ratio of impeller diameter to tank diameter (D/T) and the submergence (S) of upper impeller from the top were varied. The effects of clearance of lower impeller from the tank bottom (C2) and the impeller spacing (C3, distance between the two impellers) were also varied over a wide range. Rate of gas induction (Q) was measured for all these combinations. It was found that the rate of gas induction increases with both decreasing in submergence and increasing in the stirrer diameter. While it decreases with both increasing the impeller spacing and the clearance from the bottom. Alaa K. MohammedHassanin Ali HussenSafa Abid Al-RassulAl-Khwarizmi College of Engineering – University of BaghdadarticleChemical engineeringTP155-156Engineering (General). Civil engineering (General)TA1-2040ENAl-Khawarizmi Engineering Journal, Vol 4, Iss 4 (2008)
institution	DOAJ
collection	DOAJ
language	EN
topic	Chemical engineering TP155-156 Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	Chemical engineering TP155-156 Engineering (General). Civil engineering (General) TA1-2040 Alaa K. Mohammed Hassanin Ali Hussen Safa Abid Al-Rassul Performance of Gas Induction in a Dual – Impeller Agitated Bioreactor
description	The rate of gas induction was measured in gas-inducing type mechanically agitated contactors provided with two impellers. A reactor of 0.5 m i.d. was used with a working capacity of 60 liters of liquid. Tap water was used as the liquid phase, and air was used as the gas phase. The bioreactor mixing system consists of two equal diameter stirrers; the top impeller is shrouded-disk/curved-blade turbine with six evacuated bending blades, while the bottom impeller was disk turbine. The impeller speed was varied in the range of 50 to 800 rpm. The ratio of impeller diameter to tank diameter (D/T) and the submergence (S) of upper impeller from the top were varied. The effects of clearance of lower impeller from the tank bottom (C2) and the impeller spacing (C3, distance between the two impellers) were also varied over a wide range. Rate of gas induction (Q) was measured for all these combinations. It was found that the rate of gas induction increases with both decreasing in submergence and increasing in the stirrer diameter. While it decreases with both increasing the impeller spacing and the clearance from the bottom.
format	article
author	Alaa K. Mohammed Hassanin Ali Hussen Safa Abid Al-Rassul
author_facet	Alaa K. Mohammed Hassanin Ali Hussen Safa Abid Al-Rassul
author_sort	Alaa K. Mohammed
title	Performance of Gas Induction in a Dual – Impeller Agitated Bioreactor
title_short	Performance of Gas Induction in a Dual – Impeller Agitated Bioreactor
title_full	Performance of Gas Induction in a Dual – Impeller Agitated Bioreactor
title_fullStr	Performance of Gas Induction in a Dual – Impeller Agitated Bioreactor
title_full_unstemmed	Performance of Gas Induction in a Dual – Impeller Agitated Bioreactor
title_sort	performance of gas induction in a dual – impeller agitated bioreactor
publisher	Al-Khwarizmi College of Engineering – University of Baghdad
publishDate	2008
url	https://doaj.org/article/7a39dc41c3614b97b54027d218c608c4
work_keys_str_mv	AT alaakmohammed performanceofgasinductioninadualimpelleragitatedbioreactor AT hassaninalihussen performanceofgasinductioninadualimpelleragitatedbioreactor AT safaabidalrassul performanceofgasinductioninadualimpelleragitatedbioreactor
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Performance of Gas Induction in a Dual – Impeller Agitated Bioreactor

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