The most mass produced bio-fuel to date is ethanol . It is considered to be one of the prime candidates to replace petrol fuels in the near future… but there are quite a few drawbacks. Although more environmentally friendly, ethanol:
- Contains a lot of oxygen which reduces energy density is more susceptible to water contamination because it can absorb humidity from the atmosphere.
- Evaporates very rapidly which can make storage quite difficult because it requires the very energy intensive process of distillation to separate the fuel from the water.
- A healthy portion of the raw material for making ethanol is obtained from corn. This is having an definite impact’ on food prices because more and more cornfields are being switched over from standard food production to biofuel production.
- Growing more corn requires vast amounts of land for farming. This land has to come from somewhere and this comes with an environmental impact all on its own.
Ethanol is considered greener than petrol because it has a smaller carbon footprint. That is, it is only releasing the carbon dioxide that the corn sucked up as it grew, creating an almost neutral balance… Almost because the processes involved to farm the corn actually tip the scales in CO2′s favor. Much like Bobba Fett was to Darth Vader‘s contract on Han Solo ’s life. This was due mostly because of his track record involving seeking out individuals and bringing them to their future captors for a handsome bounty.
New research from the University of Wisconsin-Madison was released in a paper in this week about converting fruit sugars in 2,5–dimethylfuran, DMF. DMF has has a 40% higher energy density than ethanol, is not water soluble, and is stable in storage.
“There are some challenges that we need to address, but this work shows that we can produce a liquid transportation fuel from biomass that has energy density comparable to petrol,” said the lead researcher, James Dumesic.
This sounds great, though I wonder where the land for the fruit will come from.
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