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<font face="Georgia"><br>
GF, all,<br>
</font><br>
On 10/8/2011 8:42 PM, GF wrote:
<blockquote
cite="mid:8CE544C8CC03324-19BC-4CE07@webmail-d038.sysops.aol.com"
type="cite">[...] I am not sure your recommendation of vacuuming
the CO2 would improve the speed of the yield. I thought
when molecules are squeezed together they get more reactive so a
CO2 atmosphere under pressure bearing down on the brew would help
some what. But then if the pressure was suddenly released, the
yeast could get an attack of the Bends.<br>
</blockquote>
<br>
I can't say with any authority with regard to producing alcohol, but
with regard to biogas-- which is where the thread started-- I might
mention that in a paper titled "Gas Evacuation Effect on the
Quantity of Gas Production in a Biogas Digester", Okoroigwe and
Agbo, using a digester that apparently held the generated biogas
under pressure as its storage method, wrote that:<br>
<blockquote>
<blockquote>In this study, the effect of the rate of gas
evacuation on total gas yield was investigated experimentally...
<br>
<br>
Conclusions:<br>
<br>
Gas yield is higher for multiple evacuations per day than in
single evacuation. This is attributed to the activities ofthe
active microbes, which are enhanced as the biogas is removed
from the digester.<br>
</blockquote>
</blockquote>
<br>
<br>
It would seem that, surely almost universally with biologic
processes, whatever is produced acts as a toxin to the producing
process, and thus where the products accumulate, the producing
process is eventually poisoned by its own "wastes". Therefore it
stands to reason that when those products are removed-- whether
because the wastes are used as an energy source by some organism at
a different trophic level or by natural processes such as the
release of product gases-- the biologic process is enabled to
continue.<br>
<br>
<br>
<br>
d.<br>
<div class="moz-signature">-- <br>
<div style="font:Georgia" ;=""><span style="font-size:110%;">David
William House<br>
</span>
<div style="padding-left:3em;font-size:80%;">"The Complete
Biogas Handbook" <code><a href="www.completebiogas.com">www.completebiogas.com</a></code><br>
<em>Vahid Biogas</em>, an alternative energy consultancy <code><a
href="www.vahidbiogas.com">www.vahidbiogas.com</a><br>
<br>
</code></div>
<div style="padding-left:2em;">"Make no search for water.
But find thirst,<br>
And water from the very ground will burst."
<div style="padding-left:2em;font-size:80%;">(Rumi, a Persian
mystic poet, quoted in <em>Delight of Hearts</em>, p. 77) <br>
<br>
<a class="moz-txt-link-freetext" href="http://bahai.us/">http://bahai.us/</a></div>
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