Wauw !!
Somebody - and not JUST somebody - on this forum writing in real Dutch.
Very good Keith.
Met vriendelijke groet,
Pieter Koole
----- Original Message -----
From: "Keith Addison" <[EMAIL PROTECTED]>
To: <Biofuel@sustainablelists.org>
Sent: Thursday, August 11, 2005 9:38 AM
Subject: Re: [Biofuel] RE: jelly and jellybiofuel
Dag Pieter
>Hello,
>Sorry if I start talking about something you are not talking about, because
>I did not follow this discussion, but I think I can make up that you try to
>solidify ethanol.
>You can do that very easy with wallpaperglue ( Carboxyl methyl cellulose ).
>Just use ethanol in stead of water and make "strong" glue.
Velen bedankt, maar in een 3rde Wereld dorpje is wallpaperglue nie so
maklik te vind, en jy kan dit ook nie maklik self maak van locally
available renewable resources.
Wanneer het jy al ooit erger Nederlands dan die gelesen?!! LOL! Maar
miskien kan u dit verstaan...
Beste wense
Keith
>Met vriendelijke groet,
>Pieter Koole
>
>----- Original Message -----
>From: "Keith Addison" <[EMAIL PROTECTED]>
>To: <Biofuel@sustainablelists.org>
>Sent: Wednesday, August 10, 2005 5:24 PM
>Subject: Re: [Biofuel] RE: jelly and jellybiofuel
>
>
> >There is (apparently) more than one recipe for sterno.
> >
> >We had a thread going a while back that included a method: calcium
> >acetate (egg shells and vinegar) with ethanol.
>
>This is from a previous message on ethanol gel:
>
>
> >Keith Addison wrote:
> >
> >"Mix 11 grams of Calcium Acetate with 30 mg of water. Make sure all
> >the Calcium Acetate is dissolved, this might take an hour of
> >occasional stirring. Measure 10 mg of the solution. Slowly add 40 mg
> >of ethanol. As you add the ethanol, the mixture should gel
> >instantly. Pour off any remaining ethanol (a very small amount).
> >Because the mixture gels instantly, you do not have to combine the
> >two until you need to use it for cooking."
> >
> >I made some Calcium Acetate by neutralizing acetic acid with lime.
> >Works well, gels immediately, burns very nicely, but it's not very
> >stable, best to make it when you need it. This way, since it's
> >bioduels in the Third World rural development setting that we're
> >most interested in, everything required is probably available
> >locally, or could be. Ethanol can be brewed on-site (and probably is
> >already), even if it's not absolute; acetic acid can be brewed the
> >same way, by aerating the mash, and agricultural lime is fairly
> >ubiquitous.
>
>Also, from Hoagy ("chalk and vinegar, sunshine and moonshine"):
>
> > > > Some other jelled gelled alcohol ideas --
> > > >
> > > > Zen Gelled Alcohol Stoves - Sterno-like Stoves
> > > > Jelled/Gelled Alcohol
> > > > http://zenstoves.net/Sterno.htm
> > > > Extreme do it yourselfers can make their own gelled fuel
> > > > at home with alcohol and calcium acetate (C4H6CaO4).
> > > > Either methanol or ethanol can be used for fuel.
> > > > Calcium acetate (C4H6CaO4) can be purchased or made
> > > > by slowly dissolving calcium carbonate (eggshells or chalk)
> > > > in vinegar, filtering, and allowing to dry.
> > > > If you are new to chemistry take a look at
> > > > this high school science project page.
> > > >
> > > > Chemical Reactions and Solid Fuel
> > > >
> > >
>http://www.montvilleschools.org/highschool/science/edorff/chemistry/fu
> > > >elslab.htm
> > > > A solid camping fuel like Sternoô was discovered several years ago
> > > > when a group of campers forgot to pack fuel for their camp stove.
> > > > Because the area prohibited use of campfires, the campers needed to
> > > > use an alternative fuel source. One of the campers made a gel
> > > > that they could use as a solid fuel. To make this gel,
> > > > chalk was crushed and mixed with vinegar. The resulting mixture
> > > > was filtered through a napkin and the liquid collected was
> > > > heated using a solar reflector. Some rubbing alcohol
> > > > was poured into the solution to form a gel which burned.
> > > > Step 1: Reaction between chalk (calcium carbonate) and
> > > > vinegar (acetic acid, dilute) to produce
> > > > carbon dioxide, water and calcium acetate . . .
> > > > Step 2: Filtration of unreacted chalk from the mixture
> > > > to leave a solution of calcium acetate in water . . .
> > > > Step 3: Removal of excess water from calcium acetate solution . .
.
> > > > Step 4: Mixing alcohol with calcium acetate to form fuel . . .
> > > > Step 5: Combustion of fuel produced . . .
> > > > Step 6: Evaluation of fuels produced . . . [more]
> > > >
> > > > Baking Bread (And Other Recipes) With An Alcohol Stove
> > > > http://trailquest.net/baking.html
> > > >
> > > > Cloudwalker's Homemade Alcohol Stove
> > > > http://www.cloudwalkersatpage.com/page014.html
> > > >
> > > > The Gelled Alcohol Stove Fuel
> > > > - Calcium Acetate
> > > > http://wings.interfree.it/html/Gelalcohol.html
>
>
>
> >Mike
> >
> >TarynToo <[EMAIL PROTECTED]> wrote:
> >
> >Isn't "jelly solid ethanol" Sterno fuel? Or is Sterno made with
> >methanol?
> >
> >It's hard to imagine that there's any energy advantage to jellied fuels
> >over woody plants for cooking purposes, I know that many third world
> >areas have extreme shortages of cooking fuels or firewood, but it seems
> >like that's a distribution problem, more than a real shortage.
>
>Using firewood doesn't necessarily mean deforestation as often
>alleged, very often it means local forests are maintained instead.
>Where there are shortages (very serious shortages on some places)
>it's usually due more to other reasons. Indoor smoke pollution is
>probably a bigger problem than energy efficiency, and indeed energy
>efficiency itself usually boils down to making the best use of what
>you've got rather than a matter of comparative btu's or whatever.
>
>This bit of a previous message might be of interest:
>
> > > >Not all the work with improved woodstoves is convincing. Often the
> > > >target communities also aren't convinced. Some comparisons have found
> > > >that the old three-stone woodfire can be as efficient or more
> > > >efficient if it's done well. It might be a better idea to find the
> > > >best fire builder in the valley and get him to give everyone else
> > > >lessons on how to do it properly. There might also be a bigger need
> > > >for good chimneys to take the smoke out than for improved woodstoves.
> > > >Or ethanol gel, eh? Or a good vegoil stove design that a village
> > > >blacksmith can produce.
>
>In a project in Africa, cheap kerosene stoves from the Far East (?)
>did much better in the target area, without any promotion, than
>improved woodstoves did, with a lot of promotion, local workshops and
>so on, and they were free. Better would have been to find a local
>substitute for the kerosene. There is no single solution, it needs
>all the solutions.
>
> >I know there's been a great deal of debate about the energy return of
> >ethanol production here. But no matter what the numbers, it seems clear
> >that when you don't need an energy dense liquid fuel for engines, the
> >most efficient (and easily embraced) supply would involve fast growing
> >woody plants. My impression is that burning biomass provided the best
> >overall return of solar energy.
> >
> >Am I missing the UN's intention here?? Or is this another boondoggle?
>
>There's more to it than energy.
>
>Best
>
>Keith
>
>
> >Taryn
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