Electrolyte and temperature effects in a rising bubble

Manas M. Mandalahalli, Johan Lif, Robert F. Mudde, Luis M. Portela*

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

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Abstract

In this work, the rise characteristics of a single H2 bubble, in the ellipsoidal regime, in (i) water, (ii) single electrolyte (2 M, 4.5 M NaCl) solution and (iii) various concentrations of electrolyte mixture (up to 6.4 M of 1:5 weight fraction NaCl-NaClO3), have been studied, at temperatures up to 80°C. Our results show that both individual and collective effects of the temperature and the electrolyte concentration on the rise velocity and the bubble shape are purely dependent on the changes in liquid properties (density, viscosity, and surface tension); the bubble motion can be described by known non-dimensional correlations for clean bubble rise in pure fluids.

Original languageEnglish
Article number118276
JournalChemical Engineering Science
Volume270
DOIs
Publication statusPublished - 2023

Keywords

  • Bubble rise
  • Electrolytes
  • Non-dimensional analysis
  • Temperature effect

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