<div dir="ltr">Hi, <div><br></div><div>We have a digester treating waste from Elephants in Mexico (Indian Elephants just living in Mexico :). It is working great, and we are able to recovery biogas which is burned for heating water for crocodiles, and the water is recovered for irrigation. The elephant waste has a lot of massive, nearly whole pieces of plant stocks and other "woody" matter that is not really digested by the animal which we strain out and send to a compost. </div>
<div><br></div><div style>In my opinion, zoos are a really ideally spot for biogas plants because they have energy and fertilizer demands, and above all, they are educational centers where the technology can be promoted to a broad public that may not ever visits farms or other areas where AD is in place. Further, they should also be held to a higher sustainability standards given this educational component. </div>
<div style><br></div><div style>Best, </div><div style><br></div><div style>A </div></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Thu, Jun 27, 2013 at 3:51 PM, paul perrin <span dir="ltr"><<a href="mailto:paul@idltd.com" target="_blank">paul@idltd.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">What I have read does say that human waste is pretty useless for biogas (I saw a figure of 1 cubic foot per day from one humans waste) - but I understand that animal like elephants have massively inefficient digestion systems (much food passing through almost entirely undigested) so their dung will be entirely different and contain much more raw ingredients for biogas generation (would dried elephant dung even burn?). There is a calculation to be done, and it can't be based on 'averages' across species.</div>
<div class="HOEnZb"><div class="h5">
<div class="gmail_extra"><br><br><div class="gmail_quote">On 27 June 2013 20:28, Anand Karve <span dir="ltr"><<a href="mailto:adkarve@gmail.com" target="_blank">adkarve@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div>Dear Rabin,</div>
<div>all animals, including humans, function as live biogas plants. The fecal matter represents slurry coming out of a biogas plant. Using animal dung as feedstock in a biogas plant is a highly inefficient way of producing biogas. You get about 800 litres biogas from just 1 kg starch. To get the same amount of biogas from cattle dung, you need 40 kg of it. One gets much more energy from dung if it can be dehydrated and burned directly<br>
Yours</div>
<div>A.D.Karve<br></div>
<div class="gmail_quote"><div><div>On Wed, Jun 26, 2013 at 11:35 AM, Rabin Shrestha <span dir="ltr"><<a href="mailto:rshrestha@winrock.org.np" target="_blank">rshrestha@winrock.org.np</a>></span> wrote:<br>
</div></div><blockquote style="BORDER-LEFT:#ccc 1px solid;MARGIN:0px 0px 0px 0.8ex;PADDING-LEFT:1ex" class="gmail_quote"><div><div>
<div lang="EN-US" vlink="purple" link="blue">
<div>
<p class="MsoNormal">Hello,<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">Will it be a good idea to install biogas plant at zoo to manage and generate energy from the animal waste in the zoo???<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">Regards,<u></u><u></u></p>
<p class="MsoNormal">Rabin<u></u><u></u></p></div></div><br></div></div><div>_______________________________________________<br>Digestion mailing list<br><br>to Send a Message to the list, use the email address<br>
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<br>for more information about digestion, see<br>Beginner's Guide to Biogas<br><a href="http://www.adelaide.edu.au/biogas/" target="_blank">http://www.adelaide.edu.au/biogas/</a><br>and the Biogas Wiki <a href="http://biogas.wikispaces.com/" target="_blank">http://biogas.wikispaces.com/</a><br>
<br><br></div></blockquote></div><span><font color="#888888"><br><br clear="all"><br>-- <br>***<br>Dr. A.D. Karve<br>Trustee & Founder President, Appropriate Rural Technology Institute (ARTI)<br><br>
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<br>
for more information about digestion, see<br>
Beginner's Guide to Biogas<br>
<a href="http://www.adelaide.edu.au/biogas/" target="_blank">http://www.adelaide.edu.au/biogas/</a><br>
and the Biogas Wiki <a href="http://biogas.wikispaces.com/" target="_blank">http://biogas.wikispaces.com/</a><br>
<br>
<br></blockquote></div><br></div>
</div></div><br>_______________________________________________<br>
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<br>
for more information about digestion, see<br>
Beginner's Guide to Biogas<br>
<a href="http://www.adelaide.edu.au/biogas/" target="_blank">http://www.adelaide.edu.au/biogas/</a><br>
and the Biogas Wiki <a href="http://biogas.wikispaces.com/" target="_blank">http://biogas.wikispaces.com/</a><br>
<br>
<br></blockquote></div><br><br clear="all"><div><br></div>-- <br>Alexander Eaton<br>Sistema Biobolsa<br>IRRI-Mexico<br>RedBioLAC<br><br>Mex cel: (55) 11522786<br>US cel: 970 275 4505<br><br><a href="mailto:alex@irrimexico.org" target="_blank">alex@irrimexico.org</a><br>
<a href="mailto:alex@sistemabiobolsa.com" target="_blank">alex@sistemabiobolsa.com</a><br><br><a href="http://sistemabiobolsa.com" target="_blank">sistemabiobolsa.com</a><br><a href="http://www.irrimexico.org" target="_blank">www.irrimexico.org</a><br>
<a href="http://www.redbiolac.org" target="_blank">www.redbiolac.org</a><br>
</div>