Impinging-Jet Ozone Bubble Column Modeling: Hydrodynamics, Gas Hold-up, Bubble Characteristics, and Ozone Mass Transfer
作者： Mahad S. Baawain , Mohamed Gamal El-Din , Katie Clarke , Daniel W. Smith
DOI: 10.1080/01919510701451441
关键词: Backflow 、 Mass transfer coefficient 、 Steady state 、 Mass transfer 、 Ozone 、 Analytical chemistry 、 Chromatography 、 Sauter mean diameter 、 Jet (fluid) 、 Bubble 、 Chemistry
摘要: A transient back flow cell model was used to the hydrodynamic behaviour of an impinging-jet ozone bubble column. steady-state developed analyze dissolved concentration profiles measured in The column-average overall mass transfer coefficient, kLa (s−1), found be dependent on superficial gas and liquid velocities, uG (m.s−1) uL (m.s−1), respectively, as follows: kLa = 55.58 · 1.26· 0.08 . specific interfacial area, a (m−1), determined = 3.61 × 103 0.902 −0.038 by measuring hold-up (e G = 4.67 1.11 −0.05 ) Sauter mean diameter, dS (mm), bubbles (dS = 7.78 0.207 − 0.008 ). local kL then be: kL = 15.40 0.354 0.118
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