Simulation of Oxygen Mass Transfer in an Internal Loop Airlift Reactor with Axial Dispersion Model

Mohammed A. Atiya; Ameel Mohammed Rahman; Aseel Abd Al-Jabbar

Article Details

Simulation of Oxygen Mass Transfer in an Internal Loop Airlift Reactor with Axial Dispersion Model

Authors:

Mohammed A. Atiya | Ameel Mohammed Rahman | Aseel Abd Al-Jabbar

Publisher:

University of Baghdad

Journal:

Al-Khwarizmi Engineering Journal Vol.7 Issue 4, pp.61-75

Document Type:

Article

Publication Date:

12/2011

Document Language:

English

Document ID (Org No.):

2001539173

pISSN:

2312-0789

Keywords:

Abstract:

 The effect of superficial gas velocity within the range 0.01-0.164 m/s on gas holdup (overall, riser and down comer), volumetric oxygen mass transfer coefficient, liquid circulation velocity was studied in an internal loop concentric tubes airlift reactor (working volume 45 liters). It was shown that as the usg increases the gas holdup and also the liquid circulation velocity increase. Also it was found that increasing superficial gas velocity lead to increase the interfacial area that increases the overall oxygen mass transfer coefficient. The hydrodynamic experimental results were modeled with the available equations in the literature. The predicted data gave an acceptable accuracy with the empirical data.
The final empirical and predicted data were adopted in a mathematical model for oxygen mass transfer to predict the oxygen profile along the reactor. The predicted results have been validated with the experimental results. The simulated results based on the dispersion model for the riser and down comer and the perfect mixed model for the gas-liquid separator, agreed well with the experimental results over the studied range of operating conditions.

Article Details

Simulation of Oxygen Mass Transfer in an Internal Loop Airlift Reactor with Axial Dispersion Model

Authors:

Mohammed A. Atiya | Ameel Mohammed Rahman | Aseel Abd Al-Jabbar

Publisher:

University of Baghdad

Journal:

Al-Khwarizmi Engineering Journal Vol.7 Issue 4, pp.61-75

Document Type:

Article

Publication Date:

12/2011

Document Language:

English

Document ID (Org No.):

2001539173

pISSN:

2312-0789

Airlift bioreactor, reactor, dissolved oxygen

modeling, axial dispersion model, hydrodynamics, mixing, internal loop, liquid circulation velocity, gas holdup

Issues

Article Details

Simulation of Oxygen Mass Transfer in an Internal Loop Airlift Reactor with Axial Dispersion Model

Authors: Mohammed A. Atiya | Ameel Mohammed Rahman | Aseel Abd Al-Jabbar

Publisher: University of Baghdad

Journal: Al-Khwarizmi Engineering Journal Vol.7 Issue 4, pp.61-75

Document Type: Article

Publication Date: 12/2011

Document Language: English

Document ID (Org No.): 2001539173

pISSN: 2312-0789

Airlift bioreactor, reactor, dissolved oxygen

modeling, axial dispersion model, hydrodynamics, mixing, internal loop, liquid circulation velocity, gas holdup

Issues

Authors:

Mohammed A. Atiya | Ameel Mohammed Rahman | Aseel Abd Al-Jabbar

Publisher:

University of Baghdad

Journal:

Al-Khwarizmi Engineering Journal Vol.7 Issue 4, pp.61-75

Document Type:

Article

Publication Date:

12/2011

Document Language:

English

Document ID (Org No.):

2001539173

pISSN:

2312-0789