Photo Bioreactors and Mass Algal Cultures
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Questions and Answers

What is one of the major factors that limit the practical application of photo bioreactors in algal mass cultures?

  • Light intensity
  • Mass transfer (correct)
  • Nutrient availability
  • Temperature control

    • Which application is NOT mentioned as a common use of biomass from algae?

  • CO2 fixation
  • Energy production (correct)
  • Food production
  • Water treatment

    • In closed photo bioreactors compared to open ponds, what advantage is described?

  • Less maintenance required
  • Better temperature control
  • Lower initial setup cost
  • Reduced light path length leading to higher cell densities (correct)

    • Which type of photo bioreactor is NOT mentioned in the text?

    <p>Bubble-column</p> Signup and view all the answers

    What is the main application of photo bioreactors according to the text?

    <p>Photosynthetic processes involving vegetable biomass growth</p> Signup and view all the answers

    What is a limitation of open ponds for algal biomass production?

    <p>Poor light utilization by the cells</p> Signup and view all the answers

    Which type of reactor is constructed with glass or plastic tube for outdoor biomass cultures?

    <p>Tubular photobioreactor</p> Signup and view all the answers

    What is the main purpose of the proposed device for carbonation in algae culture?

    <p>To reduce CO2 diffusion difficulty in open ponds</p> Signup and view all the answers

    Which method is used for recirculating cultures in outdoor tubular photobioreactors?

    <p>Airlift system</p> Signup and view all the answers

    What is a major advantage of tubular photobioreactors?

    <p>High surface area for illumination</p> Signup and view all the answers

    What is the reported H2 yield achieved in the illustrative H2 production experiment using the flat plate photobioreactor?

    <p>105 L/L</p> Signup and view all the answers

    Why are flat-plate photobioreactors made of transparent materials?

    <p>To achieve high photosynthetic efficiencies</p> Signup and view all the answers

    What is the major advantage of using a flat-plate photobioreactor for mass cultures of algae?

    <p>High photosynthetic efficiencies</p> Signup and view all the answers

    What is the purpose of the second compartment in the flat plate photobioreactor?

    <p>To achieve turbulent culture mixing</p> Signup and view all the answers

    Which type of photobioreactor geometry was chosen for H2 production due to its superior surface-to-volume ratio?

    <p>Flat-plate reactor</p> Signup and view all the answers

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