Ks. Ro et Mk. Singh, EFFECTS OF SOLID MASS AND SIZE ON GAS HOLDUP AND OXYGEN MASS-TRANSFERCOEFFICIENT OF A 3-PHASE AIRLIFT REACTOR, Journal of environmental science and health. Part A: Environmental science and engineering, 29(10), 1994, pp. 2219-2227
We investigated the effects of sand mass and size on gas holdups and o
xygen mass transfer coefficients of a pilot-scale three-phase air-lift
reactor. Both gas holdups and the mass transfer coefficients decrease
d with the increase in sand concentration, but increased with the supe
rficial gas velocity. Previous empirical correlations for three-phase
bubble column reactors either over- or under- predicted the actual gas
holdups and the mass transfer coefficients of our air-lift reactor. T
he sizes of sand ranging from 0.2 to 1.4 mm did not affect the mass tr
ansfer coefficients.