As airlines
struggle to find cleaner ways to power jets and with an industry-wide meeting
on CO2 emissions just months away, scientists are busy growing algae
in open tanks at an Airbus site near Munich. The European aerospace group is
part financing the Munich Technical University project to grow algae for
bio-fuel and although commercial production is a long way off, hopes are high. The
bio-fuel from alga-culture could cater for 3-5% of jet fuel needs by about
2050. Algae can grow 12 times faster than plants cultivated on soil and produces
an oil yield about 30 times that rapeseed. However, although aviation bio-fuel
made from feedstocks such as flax or used cooking oil is available, limited
stocks and low oil prices mean only a few airlines, including Lufthansa and
KLM, are using it on a trial basis. To substitute 100% of the kerosene use
today, researchers will not do it with algae alone. They need a combo of different
technologies to enable that substitution. Airbus also says the technology is
still at an early stage and is not financially viable for airlines just yet. But
they are sure that over time, they will make it possible to offer kerosene made
of algae for a competitive price.
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