Abstract
Heat transfer in five air-lift and bubble column bioreactors has been investigated. Water (Newtonian) and xanthan solutions (non-Newtonian) were used. The effects of superficial gas velocity, liquid-phase viscosity and riser-to-downcomer cross-section area ratio have been studied. In air-lift slightly higher heat transfer coefficients were observed than in bubble column reactors. The superficial gas velocity and the effective liquid-phase viscosity influence strongly the heat transfer performance in all systems studied. Following the surface renewal concept, general correlations for heat transfer in Newtonian and non-Newtonian fermentation broth were developed. They describe precisely heat transfer coefficients in a wide range of operating and geometrical conditions.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
