Holdup and Mass Transfer in Bubble Columns

Comprehensive experimental investigation of counter-current bubble column hydrodynamics: Holdup, flow regime transition, bubble size distributions and local flow properties

“…Herein, a set of correlations have been selected and compared with our data (Fig. 12): Hughmark (1967):…”

New Approaches for Theoretical Estimation of Mass Transfer Parameters in Both Gas-Liquid and Slurry Bubble Columns

“…Both the gas holdup and the volumetric liquid-phase mass transfer coefficient k L a increase with gas velocity. The correlations of Hughmark (1967), Akita and Yoshida (1973) and Hikita et al (1981) predict well k L a values in bubble columns of diameter up to 5.5 m. Öztürk et al (1987) also proposed correlation for k L a prediction in various organic liquids. Suh et al (1991) investigated the effects of liquid viscosity, pseudoplasticity and viscoelasticity on k L a in a bubble column and they developed their own correlation.…”

“…In the homogeneous flow regime (where no bubble coalescence and breakup occur), bubble diameters can be estimated by the existing correlations for bubble diameters generated from perforated plates (Tadaki and Maeda, 1963;Koide et al, 1966;Miyahara and Hayashi, 1995) 393 or porous plates (Hayashi et al, 1975). Additional correlations for bubble size were developed by Hughmark (1967), Akita and Yoshida (1974) and Wilkinson et al (1994). The latter developed their correlation based on data obtained by the photographic method in a bubble column operated between 0.1-1.5 MPa and with water and organic liquids.…”

“…Correlations for gas holdup in the transition regime are proposed by Koide et al (1984) and Tsuchiya and Nakanishi (1992). Hughmark (1967), Akita and Yoshida (1973) and Hikita et al (1980) derived gas holdup correlations for the heterogeneous flow regime. The effects of alcohols on gas holdup were discussed and the correlations for gas holdups were obtained by Akita (1987a) and Salvacion et al (1995).…”

“…Godbole et al (1984) proposed a correlation for gas holdup prediction in CMC solutions. Most of the works in bubble columns dealing with gas holdup measurement and prediction are based on deep bubble beds (Hughmark, 1967;Akita and Yoshida, 1973;Kumar et al, 1976;Hikita et al, 1980;Kelkar et al, 1983;Behkish et al, 2007). A unique work concerned with gas holdup ε G under homogeneous bubbling conditions was published by Hammer et al (1984).…”