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- W1978131566 abstract "Volatilization of VOCs was investigated using a 55-gal laboratory-scale model in which air sparging experiments were conducted with a vertical air injection well. In addition, X-ray imaging of an air sparging sand box showed air flows were in the form of air bubbles or channels depending on the size of the porous media. Air–water mass transfer was quantified using the air–water mass transfer coefficient which was determined by fitting the experimental data to a two-zone model. The two-zone model is a one-dimensional lumped model that accounts for the effects of air flow type and diffusion of VOCs in the aqueous phase. The experimental air–water mass transfer coefficients, KGa, obtained from this study ranged from 10−2 to 10−3 1/min. From a correlation analysis, the air–water mass transfer coefficient was found to be directly proportional to the air flow rate and the mean particle size of soil but inversely proportional to Henry's constant. The correlation results implied that the air–water mass transfer coefficient was strongly affected by the size of porous media and the air flow rates." @default.
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- W1978131566 date "2008-04-01" @default.
- W1978131566 modified "2023-10-16" @default.
- W1978131566 title "Mass transfer of VOCs in laboratory-scale air sparging tank" @default.
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- W1978131566 doi "https://doi.org/10.1016/j.jhazmat.2007.07.087" @default.
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