Modeling Micro- And Nano-Bubble Stability and Treatment Mechanisms in Batch Reactors

Harald Klammler, Mohamed M.A. Mohamed, Kirk Hatfield, Jerry Achar, Jinho Jung

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Micro and nano bubbles have increased water treatment efficiency in laboratory and field experiments due to the elevated pressure inside small bubbles and their large specific surface area, which enhance mass transfer into surrounding water. Existing theoretical studies are limited to size dynamics and stability of (mostly) single bubbles or transport of stable bubbles through porous media. We present a theoretical modeling approach combining bubble generation, stability, and treatment reaction mechanisms in batch reactors. We consider bubble dynamics as quasi-steady compared to other reaction time-scales involved. For a single treatment gas, we demonstrate two regimes (stable bubbles or not) in agreement with previous work. The critical transition point into the stable bubble regime is defined in terms of a minimum treatment substance concentration and minimum stable bubble radius. The results are discussed through hypothetical examples and further validated using existing ozone nanobubble batch experiment data for butylated hydroxytoluene (BHT) remediation.

Original languageEnglish
Article number04020079
JournalJournal of Environmental Engineering (United States)
Volume146
Issue number8
DOIs
Publication statusPublished - 2020 Aug 1

Keywords

  • Bubble dynamics
  • Butylated hydroxytoluene
  • Chemical reaction
  • Ozone
  • Stability regime

ASJC Scopus subject areas

  • Environmental Engineering
  • Civil and Structural Engineering
  • Environmental Chemistry
  • Environmental Science(all)

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