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Experiments were conducted in 0.05 m ID and 0.23 m ID by 3 m tall bubble columns to study the effect of surfactants and viscosity of liquid medium on gas holdup and Sauter mean bubble diameter. The addition of nbutanol (0.5 and 1 wt.%) to water leads to the formation of foam and consequently produces higher gas holdups. The foam could be eliminated completely with the addition of a sufficient quantity (0.5 wt.%) of carboxymethyl cellulose to the aqueous alcohol solution. In the absence of foam, gas holdups were similar to those obtained with pure liquids. Sauter mean bubble diameters, obtained using the dynamic gas disengagement technique, increase with viscosity of liquid medium. Copyright 1989 Canadian Society for Chemical Engineering
The Canadian Journal of Chemical Engineering
author list (cited authors)
Bukur, D. B., & Patel, S. A.