Measurement and Analysis of Bubble Size Distribution in the Electrochemical Stirred Tank Reactor
DOI:
https://doi.org/10.31699/IJCPE.2023.1.4Keywords:
Electrochemical, Bubble size distribution, reactor, mean diameter.Abstract
The dimensions of bubbles were measured in a stirrer tank electrochemical reactor, where the analysis of the bubble size distribution has a substantial impact on the flow dynamics. The high-speed camera and image processing methods were used to obtain a reliable photo. The influence of varied air flow rates (0.3; 0.5; 1 l/min) on BSD was thoroughly investigated. Two types of distributors (cubic and circular) were examined, and the impact of various airflow rates on BSD was investigated in detail. The results showed that the bubbles for the two distributors were between 0.5 and 4.5 mm. For both distributors at each airflow, the Sauter mean diameter for the bubbles was calculated. According to the results, as the flow rate raised, the bubble size for cubic distributors increased from 2.35 to 2.41 mm and for circular distributors from 2.76 to 2.88 mm.
Received on 01/07/2022
Received in Revised Form on 26/08/2022
Accepted on 27/08/2022
Published on 30/03/2023
References
B. K. Körbahti and A. Tanyolaç, "Modeling of a continuous electrochemical tubular reactor for phenol removal," Chem. Eng. Commun., vol. 190, no. 5–8, pp. 749–762, 2003, https://doi.org/10.1080/00986440302129.
F. C. Walsh, "Electrochemical technology for environmental treatment and clean energy conversion," Pure Appl. Chem., vol. 73, no. 12, pp. 1819–1837, 2001, https://doi.org/10.1351/pac200173121819.
R. S. Mahmood and A. S. Abbas, "Validation of a Three-parameters Hydrodynamic Model to Describe the non-ideal Flow in a Continuous Stirred Tank Reactor of the Electro-Fenton Oxidation of Organic Pollutants in Wastewater," J. Phys. Conf. Ser., vol. 1973, no. 1, p. 012092, 2021, http://doi.org/10.1088/1742-6596/1973/1/012092.
H. Wang, X. Jia, X. Wang, Z. Zhou, J. Wen, and J. Zhang, "CFD modeling of hydrodynamic characteristics of a gas-liquid two-phase stirred tank," Appl. Math. Model., vol. 38, no. 1, pp. 63–92, 2014, https://doi.org/10.1016/j.apm.2013.05.032.
W. H. Zhang, X. Jiang, and Y. M. Liu, "A method for recognizing overlapping elliptical bubbles in bubble image," Pattern Recognit. Lett., vol. 33, no. 12, pp. 1543–1548, 2012, https://doi.org/10.1016/j.patrec.2012.03.027.
M. Polli, M. Di Stanislao, R. Bagatin, E. A. Bakr, and M. Masi, "Bubble size distribution in the sparger region of bubble columns," Chem. Eng. Sci., vol. 57, no. 1, pp. 197–205, 2002, https://doi.org/10.1016/S0009-2509(01)00301-3.
D. S. Mavinic and J. K. Bewtra, "Bubble size and contact time in diffused aeration systems," J. Water Pollut. Control Fed., vol. 46, no. 9, pp. 2129–2137, 1974.
M. S. N. Oliveira, A. W. Fitch, and X. Ni, "A Study of Bubble Velocity and Bubble Residence Time in a Gassed Oscillatory Baffled Column Effect of Oscillation Frequency," Engineering, vol. 81, no. February, 2003, https://doi.org/10.1205/026387603762878692.
S. Capela, M. Roustan, and A. Héduit, "Transfer number in fine bubble diffused aeration systems," Water Sci. Technol., vol. 43, no. 11, pp. 145–152, 2001, https://doi.org/10.2166/wst.2001.0677.
W. Yang, Z. Luo, N. Zhao, and Z. Zou, "Numerical Analysis of Effect of Initial Bubble Size on Captured Bubble Distribution in Steel Continuous Casting Using Euler-Lagrange Approach Considering Bubble Coalescence and Breakup Weidong," 2020, https://doi.org/10.3390/met10091160.
H. J. B. Couto, D. G. Nunes, R. Neumann, and S. C. A. França, “Micro-bubble size distribution measurements by laser diffraction technique,” Miner. Eng., vol. 22, no. 4, pp. 330–335, 2009, https://doi.org/10.1016/j.mineng.2008.09.006.
Y. M. Lau, K. T. Sujatha, M. Gaeini, N. G. Deen, and J. A. M. Kuipers, "Experimental study of the bubble size distribution in a pseudo-2D bubble column," Chem. Eng. Sci., vol. 98, pp. 203–211, 2013, https://doi.org/10.1016/j.ces.2013.05.024.
D. Mesa and P. R. Brito-Parada, "Bubble size distribution in aerated stirred tanks: Quantifying the effect of impeller-stator design," Chem. Eng. Res. Des., vol. 160, no. 1, pp. 356–369, 2020, https://doi.org/10.1016/j.cherd.2020.05.029.
G. G. Bellido, M. G. Scanlon, J. H. Page, and B. Hallgrimsson, "The bubble size distribution in wheat flour dough," Food Res. Int., vol. 39, no. 10, pp. 1058–1066, 2006, https://doi.org/10.1016/j.foodres.2006.07.020.
T. Wang, Z. Xia, and C. Chen, "Computational study of bubble coalescence/break-up behaviors and bubble size distribution in a 3-D pressurized bubbling gas-solid fluidized bed of Geldart A particles," Chinese J. Chem. Eng., vol. 44, pp. 485–496, 2022, https://doi.org/10.1016/j.cjche.2021.03.040.
T. Xue, X. W. Liu, Y. X. Jin, and B. Wu, "Bubbles image processing and parameters measurement based on the high-speed photography," Seventh Int. Symp. Precis. Eng. Meas. Instrum., vol. 8321, p. 83210T, 2011, https://doi.org/10.1117/12.903860.
R. S. Mahmood, A. S. Abbas, and International Scientific Conference Marshes Research Center, "Internals Design of Continuous Stirred Tank Electrochemical Reactor Based on the Residence Time Distribution Approach," Egypt. J. Chem., 2022, http://doi.org/10.21608/EJCHEM.2022.122976.5502.
C. A. Schneider, W. S. Rasband, and K. W. Eliceiri, "NIH Image to ImageJ: 25 years of image analysis," Nat. Methods, vol. 9, no. 7, pp. 671–675, 2012, http://doi.org/10.1038/nmeth.2089.
M. Senouci-Bereksi, F. K. Kies, and F. Bentahar, "Hydrodynamics and Bubble Size Distribution in a Stirred Reactor," Arab. J. Sci. Eng., vol. 43, no. 11, pp. 5905–5917, 2018, https://doi.org/10.1080/00986440302129.
Downloads
Published
Issue
Section
License
Copyright (c) 2023 Iraqi Journal of Chemical and Petroleum Engineering
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.