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Showing posts from July 17, 2011

Ethanol in fuel - Up close and personal

Five years ago, I published a short letter to Science about the real biofuel cycles.  The letter was published after a long struggle with the journal's Editor of Physical Sciences, Dr. R. Brooks Hanson, who limited my letter to 150 words, and tried to prevent me from putting in a link to these supporting materials. The whole fight was for not, because the link has been broken since I left Berkeley.  In these supporting materials, I made the following two statements:
Furfural in an impure ethanol mixture will gradually dissolve almost any rubber or elastomeric seals or ducts in storage systems and car fuel systems. (Page 13)

Finally, ethanol dissolves a large number of substances insoluble in water and acids, such as many inorganic salts, phosphorus, sulfur, iodine, resins, essential oils, fats, coloring matters, etc. (Wright, 1994).  Therefore, the metal-rich sludge in fuel tanks of most older cars will dissolve in ethanol-containing gasoline and accelerate corrosion of fuel system…