thilo.kind(at)gmx.net
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 Posted: Sun Nov 25, 2007 12:15 am Post subject: AW: [Suspect] Re: Removing Ethanol from your car-gas? |
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The Ethanol does not easily blend with gasoline,; thus, compatibilzers are used in the fuel as well. They hold the ethanol in the gasoline. I'm pretty sure, that those additives won't let the Ethanol easily go into the water. The only way the remove the Ethanol from the gasoline is by distilling colones, but that would exceed the capablities of the homebuilder...
Thilo Kind
RV 8A builder
-----Ursprüngliche Nachricht-----
Von: owner-rv-list-server(at)matronics.com [mailto:owner-rv-list-server(at)matronics.com] Im Auftrag von Scott
Gesendet: Sunday, November 25, 2007 6:08 AM
An: rv-list(at)matronics.com
Betreff: Re: [Suspect] Re: Removing Ethanol from your car-gas?
Maybe I'm missing something (and I'm NOT a chemist) but I think the
original poster was saying that if you mixed water in a tank (NOT the
aircraft fuel tank!!) of gas with ethanol in it, the ethanol would
"attach" itself to the water. We all know that water settles to the
bottom of a tank of gas. If a drain (petcock) was fitted to the mixing
tank, one could drain off the water that now has the ethanol attached to
it, removing the ethanol and leaving the gas only in the mixing tank.
One could probably then distill the ethanol out of the water to reclaim
a portion of it to be used in the tractor or lawn mower if desired.
Feasible? (I've sent the original post to a chemist in our EAA chapter
to see what he thinks)
Scott
http://corbenflyer.tripod.com/
Gotta Fly or Gonna Die
Building RV-4 (Super Slow Build Version)
Kelly McMullen wrote:
| Quote: |
What is being talked about is referred to as phase separation. With
ethanol it takes at least an equal amount of water to the ethanol, and
very cold temps to get the ethanol water mix to settle out. Try
putting some beer in mogas and see how well it settles out. Beer is
usually 5-6% ethanol, the rest water. It might work.
Ethanol in gasoline is 10% pure anhydrous ethanol.Good luck on
separation, and better luck at getting all that contaminated water out
of your tanks.
Also consider that mogas, even without ethanol is very hard on the PRC
sealant in your tanks. Tends to soften the sealant too much, leading
to leaks. I know of a Mooney owner that flew with mogas on the sly. No
issue with the engine, but his tanks turned to much and he had to put
in bladders to fix it.
c.ennis wrote:
>
>
> The EAA sells an ethanol tester....works exactly as you say. It is
> graduated and gives you the percentage of ethanal contained in a
> given volumn of fuel. Around here (northern KY area) it runs in the
> neighborhood of 10 to 12 percent, that was 2 months ago. If auto fuel
> were at $3 a gallon that would be around 30 cents out of every gallon
> bought which would be unusable and disposed of. I guess you could
> dump it in your car if you could separate it from the water.
> It seems to me that avgas is better for your engine, you don't have
> to spend any time fussing with it to remove ethanal, you don't have
> to haul it to the airport in 5 gallon cans, you don't have to get rid
> of the unusable portion of it and you don't have to wonder and worry
> about what it may be doing to that expensive prop crank on the front
> of your airplane.
> As an added thought, what kind of container do you use to "settle"
> out the ethanal? Something would need to be built which would hold a
> minimum of 20 gallons or so, or it would take hours to "unrefine"
> enough to be useful, in 5 gallon batches ( you only get 4 1/2 gallons
> usable out of every 5 you buy).
>
> Of course, thats just my opinion. 
> Charlie Ennis
> do not archive
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