Food waste can be assumed to have about 50% moisture and grass and leaves can have 70 to 80% moisture. This mixture can ferment and produce methane in the presence of methanogens, without addition of water. We have tested it by filling it into 200 litre barrels, which were sealed after filling. The system works like a miniature land fill pit, giving a small quantity of gas every day, for about 3 to 4 months. Yours A.D.Karve On Mon, Feb 13, 2012 at 4:15 AM, Wayne Zschech < [email protected]> wrote:
> G'day all! > > Greetings from very frozen Ukraine! > > Does anyone have any experience in using dry digestion? I am planning on > using food waste and grass, leaves etc. I am hoping to avoid adding water > which creates a very diluted fertilizer and I presume that there would be > an increases in energy consumption of trying to keep (or reheat) all that > liquid in a low solid system. > I really like the OWS Dranco type of configuration. I have been told that > the thermophilic reaction is more unstable in general but maybe someone > still has a working model that is simple enough to run on small scale or > around 20-25m3. I am happy to do a multistage process if I can get a more > concentrated NPK product. > > Please share any info that may be beneficial. > Blessings, > Wayne > > _______________________________________________ > 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/ > > > -- *** Dr. A.D. Karve Trustee & Founder President, Appropriate Rural Technology Institute (ARTI)
_______________________________________________ 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/
