Dear Chanakya, could you send me the article or the link where I could download the research papers.
Thank you very much. Michael Köttner IBBK Am Donnerstag 28 Oktober 2010 18:28:35 schrieb Hoysall Chanakya: > Dear All, > At IISc Bangalore there has been sustained work on small scale dry > digestion carried out over the last 20 years (termed as solid state > stratified bed reactor) in principle very similar to Bekon. There is > quite some data on how the process works and how much gas can be obtained > from various feedstocks. > > I could send 4 research papers bearing this information to whoever is > interested. Please send me a mail directly. Tommorrow I will make a > small gist of this work and post it to the server. > with best wishes > chanakya > > > In a developing world context, it would also make sense to utilize the as > > much of the gas production as possible, meaning that maybe a two-chamber > > system would make the most sense so that you could allow the HRT to be > > 100+ > > days in each chamber. Then, if there was a flexible portion of each > > chamber > > that could be compressed while venting you would be able to essentially > > eliminate any risk of an explosive mixture inside the system. My point > > it that it would make sense to push the gas through to the end-use, then > > open the chamber while it was empty. Under that scenario I see very > > little risk. I may also be talking at a small scale, as I am imagining > > chamber of > > maybe 50 m3 and smaller. Dry digestion for us would be a huge step, as > > we have a water limitation that keeps us from installing digesters in > > many areas of Mexico and Latin America. > > > > I am returning from the UN Genus waste to energy meeting in Costa Rica, > > where I did have a really interesting discussion about a multi-chambered > > dry > > digester system for food waste and solid waste collected at a larger > > level and installed at landfills. In that scenario, I also envision some > > sort of > > flexible cover that could be vacuum pumped empty before the cover was > > opened. We were also talking about cells with 2+ year HRTs. > > > > Does anyone have some good info on dry digestion, appropriate substrates, > > HRTs and gas production rates? > > > > A > > > > On Thu, Oct 28, 2010 at 10:22 AM, David <[email protected]> wrote: > >> Yvonne, > >> > >> On 10/28/2010 1:53 AM, Voegeli, Yvonne wrote: > >> > >> After visiting a Bekon biogas plant in Switzerland, Im especially > >> concerned regarding the opening of the digester for emptying and > >> refilling. > >> Before opening the door, the digester has to be vented in order to avoid > >> a > >> gas-air-mixture which is explosive. This installation seems to me rather > >> complicated.... > >> > >> ...Is it possible to install a simpler venting system? > >> > >> > >> I would venture a guess that where the inlet air is being forced in by > >> bubbling through water, and the outlet air likewise is allowed to escape > >> by > >> bubbling through water, then the only place in the system where there > >> would > >> be both a potentially explosive gas mixture and the potential of a spark > >> would be at the evacuation point of the exiting gas mixture. Where > >> sufficient air is blown over the water through which the evacuating air > >> is > >> exiting, then the risk of any explosion would, I would think, be very > >> close > >> to zero. > >> > >> > >> > >> d. > >> -- > >> David William House > >> "The Complete Biogas Handbook" www.completebiogas.com > >> *Vahid Biogas*, an alternative energy consultancy www.vahidbiogas.com > >> > >> "Make no search for water. But find thirst, > >> And water from the very ground will burst." > >> (Rumi, a Persian mystic poet, quoted in *Delight of Hearts*, p. 77) > >> > >> http://bahai.us/ > >> > >> _______________________________________________ > >> 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.bioener > >>gylists.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/ > > > > -- > > Alexander Eaton > > Sistema Biobolsa > > IRRI-Mexico > > > > Mex cel: (55) 11522786 > > US cel: 970 275 4505 > > > > [email protected] > > [email protected] > > sistemabiobolsa.com > > www.irrimexico.org > > > > -- > > This message has been scanned for viruses and > > dangerous content by MailScanner, and is > > believed to be clean. > > > > _______________________________________________ > > 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.bioenerg > >ylists.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. Hoysall Chanakya > Centre for Sustainable Technologies > (Assoc. Faculty at Centre for Infrastructure, Sustainable Transport and > Urban Planning (CiSTUP) and Centre for Contemporary Studies) > Indian Institute of Science, Bangalore 560 012 > ph 91-80-2293 3046; fax-91 80 2360 0683 -- -- Internationales Biogas und Bioenergie Kompetenzzentrum International Biogas and Bioenergy Centre of Compentence IBBK Fachgruppe Biogas GmbH Am Feuersee 6 74592 Kirchberg/Jagst Germany Fon: +49 (0)7954 926203 Fax: +49 (0)7954 926204 www.biogas-zentrum.de/ibbk/ Geschäftsführer: Dipl. Agr.biol. Michael Köttner Steuernummer: 57073/21766 UmSt.ID: DE213140113 ________________________________ Fördergesellschaft nachhaltige Biogas und Bioenergienutzung (FnBB) e.V. German Society for sustainable Biogas and Bioenergy Utilisation (GERBIO) Am Feuersee 8 74592 Kirchberg/Jagst Germany Fon: +49 (0)7954 921969 Fax: +49 (0)7954 926132 www.fnbb.org www.gerbio.org Vorstandsvorsitzender: Dipl. Agr.biol. Michael Köttner Stellvertretender Vorsitzender: Dipl.Ing. Heinz-Peter Mang Registergericht: Amtsgericht Langenburg Registernummer: VR224 Steuernummer: 57075/04800
_______________________________________________ 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/
