Dear Richard, the acidification of dung is only due to organic acids. It may change the pH but should not have any effect on the organic substances like cellulose, lignin or even mucus in the dung. Yours A.D.Karve On Wed, Dec 8, 2010 at 7:36 AM, Richard Stanley <[email protected]>wrote:
> Good questions Kevin, > > I am embarrassed to say that I have never pursued the issue, an admission > made worse by the fact of having extolled Biogas tech widely in Tanzania > through most of the 70's . Question is if the bath is acid as Crispin > implies through his description of the mentioned peace corpsman, what > effect would that have on the fiber content of the dung so essential for > wet process briquetting ? We would need the fibers intact. > As also related to Crispin's story about the use of the decanted liquid for > solidifying clay: I'm just wondering Crispin; did you get any idea of the > thermal properties of the resulting clay-cement ? Would it in other words be > good for stove insulation and/or structure ? > > Richard > > On Dec 7, 2010, at 7:58 AM, Kevin wrote: > > > Dear Rajan > > ----- Original Message ----- From: <[email protected]> > > To: "Kevin" <[email protected]>; "Discussion of biomass cooking > stoves" <>>> > >> > >> Dear Kevin, > >> > >> Well, we also use biogas plants where animal dung is a major feedstock. > >> > >> Here the energy part comes out as methane ( which is used as fuel ) and > the slurry from the plant contains all the nutrients ( without any loss ). > > > > I have no experience with biogas plants run on animal manure. Is the > slurry from a biogas plant filterable? If so, would it potentially make a > fuel equivalent or superior to dung that was burned directly, with no > washing? > > > > As I understand it, Richard Stanley uses a retting process on biomass, to > develop binding characteristics for his holey briquette feed. Would the > drained solids from a biodigester perhaps have better "binder > characteristics than freshly washed dung? Perhaps Righard has already > explored this avenue? > > > > Best wishes, > > > > Kevin > > > > > >> > >> Best Regards, > >> > >> > >> Rajan > >> > >> > >> > >> > >> > >> ----- > >> No virus found in this message. > >> Checked by AVG - www.avg.com > >> Version: 10.0.1170 / Virus Database: 426/3302 - Release Date: 12/07/10 > > > > > > _______________________________________________ > > Stoves mailing list > > > > to Send a Message to the list, use the email address > > Stoves mailing list > > > > 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/ > > [email protected] > > > http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org > > > _______________________________________________ > Stoves mailing list > > to Send a Message to the list, use the email address > Stoves mailing list > > 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/ > [email protected] > > http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org > -- *** Dr. A.D. Karve President, Appropriate Rural Technology Institute (ARTI) *Please change my email address in your records to: [email protected] *
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