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The bubble and surface volumetric mass transfer coefficients for oxygen, k L a b and k L a s , are separately determined for 179 aeration tests, with diffuser depths ranging from 2.25 to 32m, using the DeMoyer et al. [2003. Impact of bubble and free surface oxygen transfer on diffused aeration systems. Water Res 37, 1890–1904] mass transfer model. Two empirical characterization...
The primary location of oxygen transfer in a diffused aeration system is examined by separately determining the surface air-water and bubble-water mass transfer coefficients. The mass transfer model developed to determine the mass transfer coefficients advances the McWhirter and Hutter (A.I.Ch.E. J. 35(9) (1989) 1527) model by tracking oxygen and nitrogen transfer into and out of the bubbles as they...
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