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<div class="moz-cite-prefix">On 11/12/2012 11:44 PM, Takamoto wrote:<br>
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<blockquote
cite="mid:B1C98E63-C3B8-401D-97AD-71CFB78F3607@takamotobiogas.com"
type="cite">Dear Biogas List,<br>
<br>
I have been testing a plastic (LLDPE) floating drum digester with
cow dung and found that the biogas production was lower than
expected... I discovered that our dung supplier had recently used
the antibiotic Tetracycline for a few of his cows...</blockquote>
<br>
<h3>Effect of oxytetracycline on biogas production and active
microbial populations during batch anaerobic digestion of cow
manure</h3>
Abstract: "...Control serum bottles [in 120 mL serum bottles for 30
days with a working volume of 40 mL] produced 255 ± 13 mL biogas,
whereas 50–60 % inhibitions were obtained for the serum bottles
operated with samples collected for the 5 days after medication."<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>
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<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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