Mass transfer in gas-sparged porous electrodes

Ken Takahashi, Richard Alkire

Research output: Contribution to journalArticle

Abstract

The electrochemical limiting current method was used to measure mass transfer coefficients with cocurrent upward gas—liquid flow in packed bed electrodes. Liquid—solid and overall gas—solid coefficients were determined from limiting current data in the presence of inert or reactive gas flows with the use of a plug flow model. The presence of inert gas flow increased mass transfer coefficients over those in single-phase flow by a factor of up to 1.7. As a result of boundary layer penetration by gas bubbles, sparging with reactive gas increased mass transfer rates by a factor of up to 3.5.

Original languageEnglish (US)
Pages (from-to)209-227
Number of pages19
JournalChemical Engineering Communications
Volume38
Issue number3-6
DOIs
StatePublished - Nov 1 1985

Keywords

  • Gas sparging
  • Mass transfer
  • Porous electrodes

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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