Measurement of bubble size distribution and mass transfer rate: Using optical fibre sensors in a micro-algal photobioreactor

W.J. Nock1*, W.Z. Zhou2, Z.M. Wang2, S. Heaven1 and C.J. Banks1

1 Faculty of Engineering and the Environment, University of Southampton, University Road Southampton, SO17 1BJ, UK 2 Guangzhou Institute of Energy Conversion, No.2 Nengyuan Rd, Wushan, Guangzhou, 510640, China


This work utilised optical fibre sensors to measure bubble size distribution (BSD) of CO2-air bubbles in a 40-L photobioreactor as a means of enhancing the growth rate and yield of micro-algal biomass. BSD measurements were used to determine changes in volume and mass transfer rates of CO2-air bubbles. Experiments were conducted with different input CO2 concentrations throughout seven-day cultivation cycles. In comparison to tap water, increased micro-algal biomass concentrations resulted in lower detected values for the bubble size. This could be caused by the micro-algal cells affecting the liquid and bubble properties, or potential interference with the optical fibre probe, and further work is planned to clarify this.

Please fill in your details to download the proceedings

For more information about how Aqua Enviro
can help you, contact us...

8 Appleton Court, Calder Park, Wakefield, WF2 7AR, UK

Consultancy and Laboratory services: + 44 (0)1924 242255

Conferences and Training enquiries: +44 (0)1924 257891


  • By submitting this form, you agree that we may use the data you provide to contact you with information related to your request/submission and other relevant Aqua Enviro services. You can unsubscribe from Aqua Enviro marketing emails at any time by clicking the unsubscribe link in the email. To learn more, see our Privacy Policy