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- W1980061869 abstract "The gas holdup, ε, and volumetric mass transfer coefficient, kLa, were measured for the air–water system in bubble columns of three different diameters, 0.1, 0.15 and 0.38 m. The superficial gas velocity U was varied in the range 0–0.35 m s−1, spanning both the homogeneous and heterogeneous flow regimes. The gas holdup ε shows a small decrease with increased column diameter; this effect is due to increased liquid recirculations with increasing scale. The volumetric mass-transfer coefficient, kLa, closely follows the trend in gas holdup. For U>0.08 m s−1, the value of kLa/ε was found to be practically independent of column diameter and superficial gas velocity; the value of this parameter is found to be about 0.48 s−1. Our studies provide a simple method for estimation of kLa in industrial size bubble columns operated at high superficial gas velocities." @default.
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- W1980061869 date "2004-04-01" @default.
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- W1980061869 title "Influence of scale on the volumetric mass transfer coefficients in bubble columns" @default.
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- W1980061869 doi "https://doi.org/10.1016/s0255-2701(03)00015-1" @default.
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