Dear Alex, the charcoal was ordinary wood charoal purchased from the market. The lump size varied from about 1 cm to 3 cm. Yours A.D.Karve
On Fri, Mar 22, 2013 at 8:03 AM, Alex English <[email protected]> wrote: > Dear Anand, > What was the particle size of the char that you added to achieve this > effect? Have you tried different sizes? > > Thanks, > Alex > > > On 21/03/2013 8:53 PM, Anand Karve wrote: >> >> Dear Paul, Ron and others, >> I was instrumental in the development of an urban biogas plant, which >> does not use cattle dung but uses food waste as feedstock. One kg dry weight >> of starch, sugar, cellulose, protein or any other kind of human food >> produces about 1 kg biogas. My biogas plant could normally accept only 1gram >> (dry weight) food waste per litre capacity of digester. Our experiments in >> which the biogas digester was filled with charcoal made it possible to >> increase the quantity of food waste to three grams per litre, with three >> times as much biogas becoming available from the same plant. This worked for >> about three months and then the higher efficiency was no longer available. >> It is a common observation, that a biogas plant works better, if chemical >> fertilizers are added to the feedstock. I have been thinking about this and >> it appears to me that it was the minerals in the biochar, that were >> contributing to this phenomenon. After the organisms in the biogas plant had >> consumed the minerals, the higher efficiency was no longer available. >> The same phenomenon might be responsible for the higher yield in fields >> provided with biochar. >> Yours >> A.D.Karve >> O > > > > _______________________________________________ > Stoves 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/stoves_lists.bioenergylists.org > > for more Biomass Cooking Stoves, News and Information see our web site: > http://www.bioenergylists.org/ > -- *** Dr. A.D. Karve Trustee & Founder President, Appropriate Rural Technology Institute (ARTI) _______________________________________________ Stoves 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/stoves_lists.bioenergylists.org for more Biomass Cooking Stoves, News and Information see our web site: http://www.bioenergylists.org/
