Effects of Surfactant on Bubble Size Distribution and Gas Hold-up in a Bubble Column

Maedeh Asari; Faramarz Hormozi

doi:doi:10.11648/j.ajche.20130102.14

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Effects of Surfactant on Bubble Size Distribution and Gas Hold-up in a Bubble Column

Maedeh Asari, Faramarz Hormozi

Published in American Journal of Chemical Engineering (Volume 1, Issue 2)

Received: 30 June 2013 Published: 20 July 2013

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Abstract

This study investigates the influence of two surfactants –a non-ionic (Tween20) and a zwitterionic (Cocoamidopropyl Betaine) – upon the gas-liquid hydrodynamics in a bubble column. These kinds of substances can have an important influence upon the gas-liquid hydrodynamics, specifically on the bubble size and gas hold-up. Bubble diameters were measured photographically in a bubble column, which was operating in the homogeneous regime with air and aqueous surfactant solutions. The bubble size and gas hold-up data were determined for several values of the superficial gas velocity (0.13, 0.26 and 0.5 cm/s). On the other hand, bubble diameter was determined for different values of surfactant concentration (0.02, 0.05 and 0.1 %vol). At superficial gas velocity below 0.26 cm/s, addition of surfactant in air-water has low influence on bubble size, whereas higher gas velocity addition of surfactant increases the number of bubble. In surfactant solutions (in comparison with pour water), resulted in an increase in number of bubble and a rough decrease in Sauter mean bubble diameter. Bubbles tend to become smaller with decreasing surface tension of water. Therefore, surfactant existence increases the gas hold-up. Further, gas holdup increased when gas bubbles movement increased.

Published in	American Journal of Chemical Engineering (Volume 1, Issue 2)
DOI	10.11648/j.ajche.20130102.14
Page(s)	50-58
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2013. Published by Science Publishing Group

Keywords

Bubble Column, Surfactant, Bubble Size, Gas Hold-Up

References

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APA Style

Maedeh Asari, Faramarz Hormozi. (2013). Effects of Surfactant on Bubble Size Distribution and Gas Hold-up in a Bubble Column. American Journal of Chemical Engineering, 1(2), 50-58. https://doi.org/10.11648/j.ajche.20130102.14

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ACS Style

Maedeh Asari; Faramarz Hormozi. Effects of Surfactant on Bubble Size Distribution and Gas Hold-up in a Bubble Column. Am. J. Chem. Eng. 2013, 1(2), 50-58. doi: 10.11648/j.ajche.20130102.14

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AMA Style

Maedeh Asari, Faramarz Hormozi. Effects of Surfactant on Bubble Size Distribution and Gas Hold-up in a Bubble Column. Am J Chem Eng. 2013;1(2):50-58. doi: 10.11648/j.ajche.20130102.14

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@article{10.11648/j.ajche.20130102.14,
  author = {Maedeh Asari and Faramarz Hormozi},
  title = {Effects of Surfactant on Bubble Size Distribution and Gas Hold-up in a Bubble Column},
  journal = {American Journal of Chemical Engineering},
  volume = {1},
  number = {2},
  pages = {50-58},
  doi = {10.11648/j.ajche.20130102.14},
  url = {https://doi.org/10.11648/j.ajche.20130102.14},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajche.20130102.14},
  abstract = {This study investigates the influence of two surfactants –a non-ionic (Tween20) and a zwitterionic (Cocoamidopropyl Betaine) – upon the gas-liquid hydrodynamics in a bubble column. These kinds of substances can have an important influence upon the gas-liquid hydrodynamics, specifically on the bubble size and gas hold-up.  Bubble diameters were measured photographically in a bubble column, which was operating in the homogeneous regime with air and aqueous surfactant solutions. The bubble size and gas hold-up data were determined for several values of the superficial gas velocity (0.13, 0.26 and 0.5 cm/s). On the other hand, bubble diameter was determined for different values of surfactant concentration (0.02, 0.05 and 0.1 %vol). At superficial gas velocity below 0.26 cm/s, addition of surfactant in air-water has low influence on bubble size, whereas higher gas velocity addition of surfactant increases the number of bubble. In surfactant solutions (in comparison with pour water), resulted in an increase in number of bubble and a rough decrease in Sauter mean bubble diameter. Bubbles tend to become smaller with decreasing surface tension of water. Therefore, surfactant existence increases the gas hold-up. Further, gas holdup increased when gas bubbles movement increased.},
 year = {2013}
}

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TY - JOUR
T1 - Effects of Surfactant on Bubble Size Distribution and Gas Hold-up in a Bubble Column
AU - Maedeh Asari
AU - Faramarz Hormozi
Y1 - 2013/07/20
PY - 2013
N1 - https://doi.org/10.11648/j.ajche.20130102.14
DO - 10.11648/j.ajche.20130102.14
T2 - American Journal of Chemical Engineering
JF - American Journal of Chemical Engineering
JO - American Journal of Chemical Engineering
SP - 50
EP - 58
PB - Science Publishing Group
SN - 2330-8613
UR - https://doi.org/10.11648/j.ajche.20130102.14
AB - This study investigates the influence of two surfactants –a non-ionic (Tween20) and a zwitterionic (Cocoamidopropyl Betaine) – upon the gas-liquid hydrodynamics in a bubble column. These kinds of substances can have an important influence upon the gas-liquid hydrodynamics, specifically on the bubble size and gas hold-up. Bubble diameters were measured photographically in a bubble column, which was operating in the homogeneous regime with air and aqueous surfactant solutions. The bubble size and gas hold-up data were determined for several values of the superficial gas velocity (0.13, 0.26 and 0.5 cm/s). On the other hand, bubble diameter was determined for different values of surfactant concentration (0.02, 0.05 and 0.1 %vol). At superficial gas velocity below 0.26 cm/s, addition of surfactant in air-water has low influence on bubble size, whereas higher gas velocity addition of surfactant increases the number of bubble. In surfactant solutions (in comparison with pour water), resulted in an increase in number of bubble and a rough decrease in Sauter mean bubble diameter. Bubbles tend to become smaller with decreasing surface tension of water. Therefore, surfactant existence increases the gas hold-up. Further, gas holdup increased when gas bubbles movement increased.
VL - 1
IS - 2
ER -

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Author Information

Maedeh Asari

Faculty of Engineering- Dempartment of Chemical Engineering, Islamic Azad University, Shahrood Branch, Shahrood, Iran
Faramarz Hormozi

Faculty of Chemical, Gas and Petroleum Engineering, Semnan University, Semnan, Iran

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APA Style

Maedeh Asari, Faramarz Hormozi. (2013). Effects of Surfactant on Bubble Size Distribution and Gas Hold-up in a Bubble Column. American Journal of Chemical Engineering, 1(2), 50-58. https://doi.org/10.11648/j.ajche.20130102.14

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ACS Style

Maedeh Asari; Faramarz Hormozi. Effects of Surfactant on Bubble Size Distribution and Gas Hold-up in a Bubble Column. Am. J. Chem. Eng. 2013, 1(2), 50-58. doi: 10.11648/j.ajche.20130102.14

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AMA Style

Maedeh Asari, Faramarz Hormozi. Effects of Surfactant on Bubble Size Distribution and Gas Hold-up in a Bubble Column. Am J Chem Eng. 2013;1(2):50-58. doi: 10.11648/j.ajche.20130102.14

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@article{10.11648/j.ajche.20130102.14,
  author = {Maedeh Asari and Faramarz Hormozi},
  title = {Effects of Surfactant on Bubble Size Distribution and Gas Hold-up in a Bubble Column},
  journal = {American Journal of Chemical Engineering},
  volume = {1},
  number = {2},
  pages = {50-58},
  doi = {10.11648/j.ajche.20130102.14},
  url = {https://doi.org/10.11648/j.ajche.20130102.14},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajche.20130102.14},
  abstract = {This study investigates the influence of two surfactants –a non-ionic (Tween20) and a zwitterionic (Cocoamidopropyl Betaine) – upon the gas-liquid hydrodynamics in a bubble column. These kinds of substances can have an important influence upon the gas-liquid hydrodynamics, specifically on the bubble size and gas hold-up.  Bubble diameters were measured photographically in a bubble column, which was operating in the homogeneous regime with air and aqueous surfactant solutions. The bubble size and gas hold-up data were determined for several values of the superficial gas velocity (0.13, 0.26 and 0.5 cm/s). On the other hand, bubble diameter was determined for different values of surfactant concentration (0.02, 0.05 and 0.1 %vol). At superficial gas velocity below 0.26 cm/s, addition of surfactant in air-water has low influence on bubble size, whereas higher gas velocity addition of surfactant increases the number of bubble. In surfactant solutions (in comparison with pour water), resulted in an increase in number of bubble and a rough decrease in Sauter mean bubble diameter. Bubbles tend to become smaller with decreasing surface tension of water. Therefore, surfactant existence increases the gas hold-up. Further, gas holdup increased when gas bubbles movement increased.},
 year = {2013}
}

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