I suggest, please calculate based on ... indian bovine manure: 18% DS, 83% vDS, 300 l biogas/kgvDS, 60% CH4
and better check the DS and also sometimes the vDS (because of sand and soil, if you buy by weight) warm regards / mit herzlichen Gruessen Klaus Peter Hankel Message: 1 Date: Mon, 25 Oct 2010 19:04:35 +0530 From: Awadhoot Bapat <[email protected]> To: For Discussion of Anaerobic Digestion <[email protected]> Subject: Re: [Digestion] Digestion Digest, Vol 2, Issue 40 Message-ID: <[email protected]> Content-Type: text/plain; charset="iso-8859-1" Dear All , 540 M3 from 1000 Kg of cow dung ? Is it possible that there is an error in measurement ? OR an enthusiastic overstatement by the gentleman ? ( If cow dung or the flora present in /alongwith it had so much of energy value ,,,, it would create so many possibilities ) Regards, Avadhut Bapat On Mon, Oct 25, 2010 at 2:27 PM, Markus Schlattmann <[email protected]>wrote: > Hi, > > when you compare the yields based on fresh mass, are you sure you're > talking about the same "dung"? > > Here in Central Europe cattle often are kept in stables leading to liquid > (~8%TS) manure. > In India perhaps "dung" is "dried dung"? > Generally, for comapring gas yields of substrates it's better to compare > gas yields based on VS, not fresh matter, since water content may vary a > lot. > > I can't think that there's a production of 18 times more biogas if we are > talking about comparable dung. You may calculate/estimate a C-Balance. If > there's one loading, you can't get more C in CH4/CO2 out of the system than > you have put into it with the substrate/inoculum in the beginning. > > Markus Schlattmann _______________________________________________ Digestion mailing list to Send a Message to the list, use the email address [email protected] to UNSUBSCRIBE or Change your List Settings use the web page http://lists.bioenergylists.org/mailman/listinfo/digestion_lists.bioenergylists.org for more information about digestion, see Beginner's Guide to Biogas http://www.adelaide.edu.au/biogas/ and the Biogas Wiki http://biogas.wikispaces.com/
