Abstract
For processes which are not rate limited by chemical reactions, interfacial mass transfer will be controlled by the fluid mixing. This applies to transfer across both the gas/water and the oil/water (e.g. petroleum spill) interfaces. As they involve environmental water bodies, such processes are therefore often controlled by the degree and nature of the turbulence underlying the interface. Efforts in our laboratories have been directed towards the use of the pH-dependent laser-induced fluorescence (LIF) of fluorescein compounds to characterize the mass transfer of CO2 (an acid) across both the gas/water interface and the oil/water interface. The photodiode monitoring of the LIF intensity in dilute fluorescein solutions (~10−7 M) as a function of depth allows the calculation of the CO2 flux across the interface as well as across any internal solution surface. Turbulence has been generated by means of an oscillating grid. Mass transfer measurements have been made under conditions of varying turbulence intensity, length scale, and distance to the interface.
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Pankow, J.F., Asher, W.E., List, E.J. (1984). Carbon Dioxide Transfer at the Gas/Water Interface as a Function of System Turbulence. In: Brutsaert, W., Jirka, G.H. (eds) Gas Transfer at Water Surfaces. Water Science and Technology Library, vol 2. Springer, Dordrecht. https://doi.org/10.1007/978-94-017-1660-4_10
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DOI: https://doi.org/10.1007/978-94-017-1660-4_10
Publisher Name: Springer, Dordrecht
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