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Oxygen mass transfer in bubble columns

✍ Scribed by M. Alvarez-Cuenca; C.G.J. Baker; M.A. Bergougnou

Publisher: Elsevier Science
Year: 1980
Tongue: English
Weight: 755 KB
Volume: 35
Category: Article
ISSN: 0009-2509
DOI: 10.1016/0009-2509(80)85101-3

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✦ Synopsis

The mass transfer of oxygen between an and water has been studled m a bubble column over wide ranges of hquld and gas velocity An oxygen probe was used to map the steady-state hqmd phase concentration of oxygen throughout the column At any given pomt m the column, the oxygen concentration mcreased with gas veloety Mmlma were observed m plots of concentration against hqmd velocity Two distinct absorption resons were observed Close to the distributor the concentration decreased rapidly with height and volumetric mass transfer coefficients ranged from about 0 2 to 2 1 s-l These high values were attnbuted to enhanced mass transfer due to turbulence induced by the hquld and gas Jets m the grid regon In the bulk of the column, axial concentration gradients were much smaller and the mass transfer coefficients were up to two orders of magmtude lower than in the grid regon

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