Open Access Open Access  Restricted Access Subscription or Fee Access

Investigation of Mass Transfer Coefficient and Gas Hold Up and Bubble Size Distribution in Novel Design of Stirred Tank Reactor

Tushar Satpute, S. T. Patil, S. H. Gharat, S. M. Teli


Stirred tanks are commonly used in chemical industries for reaction and separation. Large-scale reactors include many impellers to improve mixing performance. Agitator plays an important role during the gas-liquid contact in two phase flow. And it is very necessary to know for the understanding of any gas-liquid system. So, in this study my motto is to study which parameters affects in the mixing of gas inside the liquid. The parameters which are affecting the rate of mass transfer inside the system are gas holdup, impeller speed. Rate of mass transfer depends upon the gas flow rate and liquid hold up. It also depends on the turbulence which is created during the rotation of impeller and it directly effects the gas-liquid contact. On the other hand for gas-liquid systems, the gas hold-up, mass transfer coefficient, and interfacial area strongly depend on the size, type and clearance between the impellers & superficial velocity. In this work, we are investigating the effect of the impeller speed, superficial gas velocity and top impeller position on gas holdup, interfacial area and mass transfer coefficient. For the multiphase impeller system computed fluid dynamics have been carried out and the model predictions have compared with the experimental data.

Full Text:



Barigou, M., and M. Greaves. 2009. “Bubble-Size Distributions Gas-liquid in mechanically.”Chemical Engineering Science47 (8): 2009–25.

Bouaifi, M., G. Hebrard, D. Bastoul, and M.Roustan.2001. “A Comparative study of Gas hold-up, Bubble size, Interfacial Area and Mass Transfer Coefficients in Stirred Gas-liquid Reactors and Bubble Columns. “Chemical Engineering and Processing 40 (2): 97–111.

Bouaifi, M., and M. Roustan.1998. “Bubble Size and Mass Transfer Coefficients in Dual-Impeller Agitated Reactors: Engineering Research on Mixing: State of the Art.” Canadian Journal of Chemical Engineering76 (3):390–97.

Forrester, S.E., C.D. Rielly, and K.J. Carpenter. 1998. “Gas-Inducing Impeller Design and performance characteristics “Chemical Engineering Science 53 (4): 603–15.

Gargouri, Boutheina, Fatma Karray, Najla Mhiri, Fathi Aloui, and Sami Sayadi.2011.” Application of a Continuously Stirred Tank Bioreactor (CSTR) for Bioremediation of Hydrocarbon-Rich Industrial Wastewater Effluents.” Journal of Hazardous Materials 189 (1–2): 427–34.

Go gate, Parag R., Anthony A.C. Beehackers, and Aniruddha B. Pandit.2000. “Multiple-Impeller Systems with A Special Emphasis on Bioreactors: A Critical Review.” Biochemical Engineering Journal 6 (2):109–44.

Guan., L. Xinju, N. Yang, and M.Liu.2019. “CFD simulation of Gas-Liquid Flow in stirred Tanks: Effect of Drag Models." Chemical Engineering Journal.

Hodaifa, Gassan, J.M. Ochando-Pulido, S. Rodriguez Vives, and A.Martinez-Ferez. 2013. “Optimization of continuous reactor at Pilot Scale for Olive-Oil MillWastewater Treatment by Fenton-like Process.” Chemical Engineering Journal 220:117-24.

Kasat, Gopal R., Aniruddha B. Pandit, and V.V. Ranade.2008. “CFD Simulation of Gas-Liquid Flows in a Reactor Stirred by Dual Rushton Turbines.” International Journal of Chemical Reactor Engineering.

Shivanand M.Teli1/Viraj S.Pawar 2/Channamallikarjun Mathpati1.2019.” Experimental and Computational Studies of Aerated Stirred Tank with Dual Impeller.” International Journal of Chemical Reactor Engineering.

Kasat, Gopal R., Aniruddha B. Pandit, and V.V. Ranade. 2008. “CFD Simulation of Gas-Liquid Flows in a Reactor Stirred by Dual RushtonTurbines.” International Journal of Chemical Reactor Engineering

Wang, Hongna, Xiaoqiang Jia, Xue Wang, Zhengxi Zhou, Jianping Wen, and Jinli Zhang. 2014. “CFD Modeling of Hydrodynamic Characteristics of a Gas-Liquid Two-Phase Stirred Tank.” Applied Mathematical Modelling.

Shewale, Satish D., and Aniruddha B. Pandit. 2006. “Studies in Multiple Impeller Agitated Gas- Liquid Contactors.” Chemical Engineering Science 61 (2): 489–504.

Smith, J. M., K. Van’t Riet, and J. C. Middleton. 1977. “Scale-up of Agitated Gas-Liquid Reactors for Mass Transfer.”

Zhu, Y., P.C. Bandopadhayay, and J. I. Wu. 2001. “Measurement of Gas-liquid Mass Transfer in an Agitated vessel-A Comparison between Different Impellers.” Journal of Chemical Engineering of Japan.

Bouaifi, M., and M. Roustan. 1998. “Bubble Size and Mass Transfer Coefficients in Dual- Impeller Agitated Reactors: Engineering Research on Mixing: State of the Art.” Canadian Journal of Chemical Engineering.


  • There are currently no refbacks.