Powering the Future: Biofuels. Activity: Algal Photosynthesis Describe the requirements of...
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Powering the Future: Biofuels. Activity: Algal Photosynthesis Describe the requirements of photosynthesis Take measurements to assess the rate of photosynthesis
Activity: Algal Photosynthesis Describe the requirements of
photosynthesis Take measurements to assess the rate of
photosynthesis under varying conditions Evaluate the benefits of
producing biofuels from algae and the conditions required
Slide 3
To help combat climate change the UK has a target to reduce
carbon emissions by 80% by 2050. 30% of the UK renewable energy
could come from biomass heat and electricity by 2020. To meet the
European Renewable Energy Directive, the UK is aiming for 10% of
transport energy to be from renewable sources by 2020. 18% of the
sustainable renewable road transport fuel used in the UK between
April 2012 and April 2013 came from UK feedstocks. Facts and
Figures
Slide 4
Algae : Algae are a diverse group of eukaryotic photosynthetic
organisms. They can be single-celled (unicellular) or multicellular
such as seaweed. Microalgae have been described as natures very own
power cells and could provide alternatives to petroleum-based fuels
without competing with crops.
Slide 5
Algae products : There are a wide range of bioenergy products
that can be obtained from culturing algae including biomass for
combustion to produce heat and electricity, fermentation to produce
bioethanol, biobutanol or biogas, oil for conversion to biodiesel
or even possibly algal synthesised biodiesel.
Slide 6
Algae light microscope image: In order to develop biofuels from
algae, research is being conducted to find suitable strains that
produce high levels of oils, can tolerate heat and high
concentrations of carbon dioxide, and are easy to harvest. Plymouth
Marine Laboratory
Slide 7
Bubble Columns: Microalgae can be grown in large bioreactors
and continually harvested unlike crops or macroalgae. They could be
grown using the waste carbon dioxide from industrial processes,
power stations or waste treatment plants. The oil they produce can
then be converted into liquid fuel. Plymouth Marine Laboratory
Slide 8
Scanning Electron Microscope image of algae: Algae can harvest
the power of the sun through photosynthesis and convert this into
biomass including oil. They are fast growing and more efficient
than plants at absorbing carbon dioxide. Plymouth Marine
Laboratory
Slide 9
Scanning Electron Microscope image of algae: There may well be
naturally occurring algae that can perform many of the tasks that
we might want and researchers carrying out bioprospecting hope to
identify suitable strains by selective screening. Plymouth Marine
Laboratory
Slide 10
Fluorescent staining of oil in algae: In order to develop algal
biofuels research is being conducted to find suitable strains that
produce high levels of oils, can tolerate heat and high
concentrations of carbon dioxide, and are easy to harvest. Plymouth
Marine Laboratory
Slide 11
Hydrogen carbonate indicator: Photosynthesis can be measured as
the indicator turns from yellow to purple as carbon dioxide is
removed from the solution by the algae. The amount of light that
will pass through the indicator decreases as it turns purple and
this can be measured with a colourimeter.
Slide 12
Activity: Algal Photosynthesis Describe the requirements of
photosynthesis Take measurements to assess the rate of
photosynthesis under varying conditions Evaluate the benefits of
producing biofuels from algae and the conditions required