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Local overall volumetric gas–liquid mass transfer coefficients in gas–liquid–solid reversed flow jet loop bioreactor with a non-Newtonian fluid by Wen Jianping; Na Ping; Huang Lin; Chen Yunlin is a Biochemistry, Genetics and Molecular Biology article available to read on EtoBox.

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The local overall volumetric gas-liquid mass transfer coefficients at the specified point in a gas-liquid-solid three-phase reversed flow jet loop bioreactor (JLB) with a non-Newtonian fluid was experimentally investigated by a transient gassing-in method. The effects of liquid jet flow rate, gas jet flow rate, particle density, particle diameter, solids loading, nozzle diameter and CMC concentration on the local overall volumetric gas-liquid mass transfer coefficient (K L a) profiles were discussed. It was observed that local overall K L a profiles in the three-phase reversed flow JLB with non-Newtonian fluid increased with the increase of gas jet flow rate, liquid jet flow rate, particle density and particle diameter, but decreased with the increase of the nozzle diameter and CMC concentration. The presence of solids at a low concentration increased the local overall K L a profiles, and the optimum of solids loading for a maximum profile of the local overall K L a was found to be 0.18×10 -3 m 3 corresponding to a solids volume fraction, ε S =2.8%.

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Author

Wen Jianping; Na Ping; Huang Lin; Chen Yunlin

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 1369-703X)

Published

2000

Language

EN

Field

Biochemistry, Genetics and Molecular Biology (Physical Sciences)