Water/Avgas/Gasahol/Mogas

"Jim Weir" wrote:
Two years of college chemistry does not a chemist make out of me, so let's
see
if anybody has the answer to this one:

Until we get around to making gaskets and o-rings that will stand up to
alcohol,
is there a cheap and easy way to chemically (or mechanically) take the
alcohol
out of gasoline? Yeah, I know that we could use fractional distillation,
but
that's a little beyond the average home kitty-litter filter process that I
was
contemplating.

Thoughts?

I guess you're thinking of something like SilcaGel (which has a high
affinity for water), but in this case we need a substance that has a high
affinity for ethanol but none for the hydrocarbons. Sounds like you need an
Irish liver. :-)

No, seriously, you might be able to use some of the laboratory-grade
semi-permiable membranes, if you can find one that passes ethanol-sized
molecules but not aromatic hydrocarbon-sized ones.

Russell Kent