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Microbubbles: an energy-efficient way to accelerate biofuel production

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Microbubbles: an energy-efficient way to accelerate biofuel production

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    1. Microbubbles: an energy-efficient way to accelerate biofuel production Will Zimmerman Professor of Biochemical Dynamical Systems Chemical and Biological Engineering, University of Sheffield with Dr Hemaka Bandulasena and Dr Jaime Lozano-Parada, with Mr Kezhen Ying and Mr James Hanotu and special thanks to Professor Vaclav Tesar, Dr Buddhi Hewakandamby, and Mr Olu Omotowa (all formerly University of Sheffield researchers).

    2. Outline Why and how microbubbles? ALB concept Performance studies Steel stack gas trials Advantages for microbial and mammalian cell ALBs Ozone plasma microreactor in the lab (oxidation, lysing cells) Prototype designs

    3. Why microbubbles?

    4. The Fluidic oscillator

    5. Fluidic oscillator makes microbubbles!

    7. Bubble size distribution

    8. Energetics from pilot plant

    9. Air lift loop bioreactor design

    10. Construction

    11. Growing algae in the lab

    13. Biomass Concentration

    14. Algal bioreactor challenge and market

    15. Methodology

    16. Field trials Corus: steel plant algal culture Aecom: separation/harvesting Oxyfuel integration with CLCC.

    17. Key Findings/results

    18. Probing operation

    19. Pseudosteady operation

    20. Next Steps

    21. Features

    22. Ozone Kills and mineralizes!

    23. Microfluidic onchip ozone generation

    24. Plasma discs

    25. Dosing lance assembly

    27. Consequences Our low power ozone plasma microreactor can be inserted into the microporous diffusers to arrange for ozone dosing on demand in an ALB, for sterilization or other uses. One potential use is providing a non-equilibrium driving force for biochemical reaction / biomass growth by breaking down extracellular metabolites secreted by microorganisms to minerals (CO2, H2O, nitrates, phosphates etc.) by UV-ozone providing a strong oxidizing environment in situ.

    28. More Acknowledgements Corus: Bruce Adderley, Mohammad Zandi and many more. Suprafilt: Graeme Fielden, Jonathan Lord, and Hannah Nolan Micropore Technologies: Mike Stillwell HP Technical Ceramics: Tim Wang AECOM DB: Brenda Franklin, Ben Courtis, Hadi Tai Yorkshire Water: Martin Tillotson, Ilyas Dawood UoS: Jim Gilmour, Raman Vaidyanathan, Simon Butler, Graeme Hitchen, Adrian Lumby, Stuart Richards, Clifton Wray, Andy Patrick Yorkshire Forward, TSB, EPSRC, SUEL

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