On 11/12/2012 11:44 PM, Takamoto wrote:
Dear Biogas List,
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...
Effect of oxytetracycline on biogas production and active
microbial populations during batch anaerobic digestion of cow manure
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."
d.
--
David William House
"The Complete Biogas Handbook" |www.completebiogas.com|
/Vahid Biogas/, an alternative energy consultancy |www.vahidbiogas.com
|
|
"Make no search for water. But find thirst,
And water from the very ground will burst."
(Rumi, a Persian mystic poet, quoted in /Delight of Hearts/, p. 77)
http://bahai.us/
|
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