, Volume 16, Issue 6, pp 385-392

Instantaneous concentration profiles of oxygen accompanying absorption in a stratified flow

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Absorption of oxygen from air to water is studied for a stratified flow. Instantaneous concentration profiles in the liquid, close to the interface, are measured by utilizing oxygen quenching of the fluorescence from pyrenebutyric acid. When waves are present very large temporal variations of the concentration profile and of the mass transfer rate are observed. These results seem to rule out the notion that turbulence in the liquid is controlling mass transfer.

This work is being supported by the National Science Foundation under NSF CIS 92-09877 and by the U.S. Department of Energy under DEF Go2-86-ER13556. The idea behind this work evolved from discussions with Professor G. Weber of the Department of Biochemistry, the University of Illinois, Urbana.