Effect of Suspended Liposomes on Hydrodynamic and Oxygen Transfer Properties in a Mini-Scale External Loop Airlift Bubble Column

• Published in: Chemical engineering & technology Vol. 29; no. 9; pp. 1107 - 1112
• Main Authors: Yoshimoto, M., Momodomi, C., Fukuhara, H., Fukunaga, K., Nakao, K.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Weinheim WILEY-VCH Verlag 01.09.2006; WILEY‐VCH Verlag; Wiley-VCH
• Subjects: Airlift; Airlift, Reactor; Applied sciences; Bubbles; Chemical engineering; Columns; Columns, Bubbles; Exact sciences and technology; Heat and mass transfer. Packings, plates; Hydrodynamics of contact apparatus; Oxygen; Reactor; Liquid film; Gas holdup; Bubble; Particle size distribution; Foam; Bubble column; Oxygen transfer; Hydrodynamics; Liquid phase
• ISSN: 0930-7516; 1521-4125
• DOI: 10.1002/ceat.200600140

The circulating liquid velocity, gas holdup, bubble size distribution, and liquid phase oxygen transfer coefficient were measured in a mini‐scale external loop airlift bubble column (MELBC) with the liquid volume suspending enzyme‐free liposomes of varying diameters. These values were compared to those for liposome‐free MELBC, normal bubble column (NBC), and a larger scale airlift column. The liposomes suspended in the MELBC are incorporated into the liquid film around the bubbles, leading to the development of a foam layer, where the incorporated liposomes exert negligible effect on the oxygen transfer in the film. The circulating liquid velocity, gas holdup, bubble size distribution, and liquid phase oxygen transfer coefficient were measured in a mini‐scale external loop airlift bubble column (MELBC) with liquid volume suspending enzyme‐free liposomes of varying diameters. These values were compared to those for liposome‐free MELBC, normal bubble columns (NBC), and a larger scale airlift columns.