"tillius" wrote in message
oups.com...
Also, I've looked for the past week at the effects and up/downsides of
Ethanol vs. Butanol. This thread was one of the last things I did
searching for my answers.

I am still seeking downsides to butanol, but again, aside from the odor
during production and the possible hard starts in cold wheather with a
95 degree flashpoint, and the toxicity (not more toxic than gasoline,
however), the only other con I can find was it's high cost of
production. The new processes using fibrous fermentation beds have
changed the cost of production ($1.05 - $1.25/gallon using corn
feedstock) AND yeilds per bushel of feedstock to the same as ethanol,
only with higher energy yeild per gallon of fuel.

Using a feedstock such as dairy waste from cheese manufacturing reduces
the production cost per gallon of butanol to approximately $0.50 per
gallon.

Again, if you know of links to more downside information on butanol,
please let me know. I'm considering forming a co-op to investigate
butanol production for the personal use of co-op members in my area.

Till


The downside of ethanol, butanol or any other manufactured from grown crops
fuel, is that there is not going to be enough of the stuff. Would take just
about all our present food grown to provide our present fuel usage.