Related Experiment Video
Updated: Jul 3, 2026

Continuous Liquid-Liquid Extraction of Medium-Chain Fatty Acids from Fermentation Broth Using Hollow-Fiber Membranes
Published on: August 9, 2024
Enhancement of oxygen transfer in highly viscous non-newtonian fermentation broths
1Biochemical Engineering Research Center, Department of Applied Chemistry, Toyo University, Kawagoe, Saitama 350, Japan.
Abstract:
The influence of short draft tubes covered by perforated plates on gas-liquid mass transfer was examined in external-loop airlift bioreactors. The volumetric mass transfer coefficients in a model external-loop airlift bioreactor were measured with water and non-Newtonian media. It was found that introduction of draft tubes covered with perforated plates in the riser significantly improved the mass transfer rate, particularly in higher viscous non-Newtonian fermentation media. The enhancement of mass transfer rate might be due mainly to an increase in bubble coalescence and redispersion.
More Related Videos
Related Concept Videos
Bioreactor Controls-II
Viscosity of Fluid
Viscosity
The SI unit of viscosity is...
Viscosity
Colloids and Suspensions
Designing Growth Media for Bioreactors

