Performance of gas induction in a dual-impeller agitated bioreactor
Other Title(s)
أداء المفاعلات الحيوية ذات الخلاطات المزدوجة الساحبة للهواء
Joint Authors
al-Ghazzali, Ala Karim Muhammad
Husayn, Hasanayn Ali
Abd al-Rasul, Safa
Source
al-Khwarizmi Engineering Journal
Issue
Vol. 4, Issue 4 (31 Dec. 2008), pp.1-8, 8 p.
Publisher
University of Baghdad al-Khwarizmi College of Engineering
Publication Date
2008-12-31
Country of Publication
Iraq
No. of Pages
8
Main Subjects
Topics
Abstract AR
تم قياس معدل سحب الهواء في المفاعلات الحيوية ذات الخلاطات المزدوجة الساحبة للهواء.
استخدام مفاعل ذو قطر 0.5 م و سعة 60 لتر.
استخدم الماء كوسط سائل و الهواء كوسط غاز.
يتكون نظام الخلط في المفاعل من خلاطين متساويين في القطر : الخلاط الأعلى من نوع الريش الأنبوبية الساحبة للهواء (shrouded disk/curved-blade turbine) و الخلاط الأسفل من نوع القرص التوربيني (disk turbine).
المتغيرات التي تم دراستها في هذا البحث هي : سرعة دوران الخلاط بحدود 800 – 500 دورة / دقيقة، نسبة قطر الخلاط إلى قطر المفاعل، عمق الخلاط الأعلى عن سطح السائل (submergence)، المسافة بين الخلاطين (Clearance)، بعد الخلاط الأسفل عن قعر المفاعل.
و جد أن معدل سحب الهواء يزداد بزيادة قطر الخلاط و نقصان عمق الخلاط عن السطح العلوي للسائل، بينما يقل معدل السحب بزيادة المسافة بين الخلاطين و زيادة المسافة بين قعر المفاعل و الخلاط السفلي.
Abstract EN
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.
American Psychological Association (APA)
al-Ghazzali, Ala Karim Muhammad& Husayn, Hasanayn Ali& Abd al-Rasul, Safa. 2008. Performance of gas induction in a dual-impeller agitated bioreactor. al-Khwarizmi Engineering Journal،Vol. 4, no. 4, pp.1-8.
https://search.emarefa.net/detail/BIM-379023
Modern Language Association (MLA)
al-Ghazzali, Ala Karim Muhammad…[et al.]. Performance of gas induction in a dual-impeller agitated bioreactor. al-Khwarizmi Engineering Journal Vol. 4, no. 4 (2008), pp.1-8.
https://search.emarefa.net/detail/BIM-379023
American Medical Association (AMA)
al-Ghazzali, Ala Karim Muhammad& Husayn, Hasanayn Ali& Abd al-Rasul, Safa. Performance of gas induction in a dual-impeller agitated bioreactor. al-Khwarizmi Engineering Journal. 2008. Vol. 4, no. 4, pp.1-8.
https://search.emarefa.net/detail/BIM-379023
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 7
Record ID
BIM-379023