[Stoves] easy fix new route fwd...based on experience notarmchair advice...

[Richard Stanley]

Dear AD and Kevin, 
Thanks to you both for both your insights and suggestions.  Esvin says that he will try this out covering the residues with black plastic (~2mil) sheeting to elevate the temperature but this time, as an induced variable, he will  not be sealing the sides, as is currently done. (of course, this will be done alongside a closed sample of same feedstock as a control. He will revert to you and i with his results. Will also be looking into a microbiologist a the university in the capital, to analyse the sample of verderdura / yeast and try to put him or her directly in contact with you both through Esvin. 
Cheers all,
Richard 
Lankin Gutemala
this is a smallish form of what happens in productionnormally it needs to be 1 mete wide about 30 cm tall and about 5 meters long for a days produciton but you get the idea. The yeast in a water solution is in blue cup on left. 


On Dec 16, 2012, at 9:50 PM, Anand Karve wrote:

Dear Stovers,
yeast is a fungus. Under natural conditions, yeasts lead a normal life as air breathing organisms. Under anaerobic conditions, yeast ferments sugar into alcohol. Therefore we have this preconceived notion that yeast can eat only sugar. It is obvious that under aerobic conditions yeast behaves like any other fungus and can eat lignin, cellulose, protein and fat.
Yours
A.D.Karve 

On Mon, Dec 17, 2012 at 8:38 AM, Richard Stanley <rstanley at legacyfound.org> wrote:
Dear Kevin,

In Guatemala Esvin Martin tells me that yeast is not only used  for bread, or wine. It is also  used for acceleration of decomposition in the production of organic fertilizers. Where Esvin has done tests for decomposition of materials for what is being dubbed in Guatemala, as Ecolena, he has  discovered  that yeast generates a higher termperature which in turn accelerates decomposition, softens the materials and allows them to be more easily compacted. 

How this relates to the interaction of /dependence upon/  the yeast with sugars, is apparently not so much the issue as the fact that ti simply generates heat. How and through what reaction we have yet to discover but there is a traditon for using it over the past 5 years or so, in the preparation of organic fertilisers, according to Esvin. 

I saw it in use and saw the blend and observed that indeed decomposition was accelerated with the result of a more flexible fiber matrix and hence a more compact briquette. The time observed was 8 days with use of the yeast and 18 + days for non yeast:,  same blend, same black plasic covering to same form, same climate/ sun/ temperature /humidity etc., conditions. 

Admittedly there is a lot more to be understood here eh ? Will keep digging but in the mean time, its gaining some degree of acceptance in-practice.

Look fwd to any technical explanations from your and other observer's side.   This really is a good research project for real science, to a very useful end. We could benefit from it everywhere they are making briquettes of this type for real, non donor assisted, sustainable  livlihoods in the real marketplace . ( Production is going on now in about 65 countries and counting at this point ).

Thanks and anon,

Richard Stanley
de EEUU

Esvin Martin
de 
Guatemala
================================= 
 
_______________________________________________
Stoves mailing list

to Send a Message to the list, use the email address
stoves at lists.bioenergylists.org

to UNSUBSCRIBE or Change your List Settings use the web page
http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org

for more Biomass Cooking Stoves,  News and Information see our web site:
http://www.bioenergylists.org/


-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.bioenergylists.org/pipermail/stoves_lists.bioenergylists.org/attachments/20121217/55b8aa1c/attachment.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: Screen shot 2012-12-17 at 10.02.36 AM.png
Type: image/png
Size: 577716 bytes
Desc: not available
URL: <http://lists.bioenergylists.org/pipermail/stoves_lists.bioenergylists.org/attachments/20121217/55b8aa1c/attachment.png>