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Related Experiment Videos

Ultrahigh bioproductivity from algae.

Jeffrey M Gordon1, Juergen E W Polle

  • 1Department of Solar Energy and Environmental Physics, Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Sede Boqer Campus, 84990, Israel. jeff@bgu.ac.il

Applied Microbiology and Biotechnology
|July 25, 2007
PubMed
Summary
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Enhanced Algal Photosynthetic Photon Efficiency by Pulsed Light.

iScience·2020

This study enhances algal bioproductivity using pulsed light-emitting diodes in photobioreactors. This innovative approach boosts biomass yields for sustainable biofuel production.

Area of Science:

  • Biotechnology
  • Photonics
  • Algal cultivation

Background:

  • Current biomass production methods have limitations in efficiency.
  • Algal photobioreactors offer potential for increased bioproductivity.
  • Integrating photonics and biotechnology can overcome existing challenges.

Purpose of the Study:

  • To describe a novel strategy for dramatically increasing bioproductivity in algal photobioreactors.
  • To achieve high biomass yields (up to 100 g dry weight m(-2) h(-1)) through enhanced algal flux tolerance.
  • To explore the integration of photonics and biotechnologies for biofuel production.

Main Methods:

  • Tailoring photonic input (temporal, spectral, intensity) using pulsed light-emitting diodes (LEDs).
  • Utilizing thin-channel ultradense culture photobioreactors with rapid light/dark cycles.

Related Experiment Videos

  • Applying renewable electricity for artificial light, powered by advances in concentrator photovoltaics and high-performance LEDs.
  • Engineering algal cells to modify chlorophyll antenna size and metabolic pathways.

    • Main Results:

    • Projected biomass yields as high as 100 g dry weight m(-2) h(-1).
    • Achieved heightened algal flux tolerance through tailored pulsed light.
    • Demonstrated practical conversion of sunlight into pulsed red light for indoor photobioreactors.
    • Identified optimal pulse characteristics for rate-limiting dark reactions in photosynthesis.

    Conclusions:

    • The proposed strategy significantly enhances algal bioproductivity using existing technologies.
    • Integration of photonics and biotechnology offers a viable path for efficient biofuel production.
    • Cellular and metabolic engineering can further amplify bioproductivity gains.
    • The approach is globally feasible with renewable energy sources.