Si transfiérela, gracias
Rodolfo Bisceglia PLOTEC SRL [email protected] Cel.:15-6464-1898 Tel.:4748-0505 Fax: 4846-2704 -----Mensaje original----- De: [email protected] [mailto:[email protected]] En nombre de [email protected] Enviado el: Lunes, 06 de Junio de 2011 04:00 p.m. Para: [email protected] Asunto: Digestion Digest, Vol 10, Issue 5 Send Digestion mailing list submissions to [email protected] To subscribe or unsubscribe via the World Wide Web, visit http://lists.bioenergylists.org/mailman/listinfo/digestion_lists.bioenergylists.org or, via email, send a message with subject or body 'help' to [email protected] You can reach the person managing the list at [email protected] When replying, please edit your Subject line so it is more specific than "Re: Contents of Digestion digest..." Today's Topics: 1. AD for cow manure (Rex Zietsman) 2. Re: Biogas microbiology Conference (Marcell Nikolausz) 3. Re: AD for cow manure (Vianney Tumwesige) ---------------------------------------------------------------------- Message: 1 Date: Sun, 5 Jun 2011 21:31:49 +0200 From: "Rex Zietsman" <[email protected]> To: <[email protected]> Subject: [Digestion] AD for cow manure Message-ID: <[email protected]> Content-Type: text/plain; charset="us-ascii" Paul, The bladder system I described is Shelby's. He is now living in the USA. Peter, Nice system, too small for the scale we are looking at. Michael, It is not so much the cost of getting over there and doing the course, it is my time. I work for myself as a consultant and have to pay the rent. So my time costs more than the flight and course combined. I agree that I am probably looking at covered lagoon processes. The SA farmers you mentioned, do you know if they ever installed systems? Kind regards Rex ------------------------------ Message: 2 Date: Mon, 06 Jun 2011 13:11:27 +0200 From: Marcell Nikolausz <[email protected]> To: For Discussion of Anaerobic Digestion <[email protected]> Subject: Re: [Digestion] Biogas microbiology Conference Message-ID: <[email protected]> Content-Type: text/plain; charset="iso-8859-1"; Format="flowed" Dear Vianney Tumwesige, I'm in the organizing committee of the "1st International Conference on Biogas Microbiology" that will be held in Leipzig between 14th and 16th September. You can find more information on the homepage of our meeting: www.ufz.de/biogas-microbiology Best regards Marcell Nikolausz Department of Bioenergy (BEN) - in cooperation with DBFZ Helmholtz Centre for Environmental Research - UFZ Helmholtz-Zentrum f?r Umweltforschung GmbH - UFZ Torgauer Strasse 116 D-04347 Leipzig Germany phone: + 49 (0) 341 2434 566 fax: + 49 (0) 341 2434 133 e-mail: [email protected] homepage: http://www.ufz.de/index.php?de 729 Das UFZ hat einen neuen Namen: Helmholtz-Zentrum f?r Umweltforschung GmbH - UFZ The UFZ has a new name: Helmholtz Centre for Environmental Research - UFZ Sitz der Gesellschaft: Leipzig Registergericht: Amtsgericht Leipzig Handelsregister Nr. B 4703 Vorsitzender des Aufsichtsrats: MinR Wilfried Kraus Wissenschaftlicher Gesch?ftsf?hrer: Prof. Dr. Georg Teutsch Administrativer Gesch?ftsf?hrer: Dr. Andreas Schmidt -------------------------------------------------------------------------------------------- I. International Conference on Biogas Microbiology Leipzig, 14-16 September 2011 http://www.ufz.de/biogas-microbiology [email protected] > Hello AD friends, > > Hope this email finds you well. I have been following most of the > discussions lately, thanks to you all. > > Do you know of a conference on Biogas Microbiology to happen at some > point in October/November? It will be great to learn about it. > > All the best. > > -- > Vianney Tumwesige > Director - Green Heat (U) Ltd Picture > P.O. Box 10235 > Kampala-Uganda > 256 (0) 71 237 9889 > > "The more people are self sufficient in cooking fuel, the more > personal and financial freedom they have." - Emma Casson > > > <http://trustvianney.wordpress.com/> > > > _______________________________________________ > 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. Marcell Nikolausz Department of Bioenergy (BEN) - in cooperation with DBFZ Helmholtz Centre for Environmental Research - UFZ Helmholtz-Zentrum f?r Umweltforschung GmbH - UFZ Torgauer Strasse 116 D-04347 Leipzig Germany phone: + 49 (0) 341 2434 566 fax: + 49 (0) 341 2434 133 e-mail: [email protected] homepage: http://www.ufz.de/index.php?de 729 Das UFZ hat einen neuen Namen: Helmholtz-Zentrum f?r Umweltforschung GmbH - UFZ The UFZ has a new name: Helmholtz Centre for Environmental Research - UFZ Sitz der Gesellschaft: Leipzig Registergericht: Amtsgericht Leipzig Handelsregister Nr. B 4703 Vorsitzender des Aufsichtsrats: MinR Wilfried Kraus Wissenschaftlicher Gesch?ftsf?hrer: Prof. Dr. Georg Teutsch Administrativer Gesch?ftsf?hrer: Dr. Andreas Schmidt -------------------------------------------------------------------------------------------- I. International Conference on Biogas Microbiology Leipzig, 14-16 September 2011 http://www.ufz.de/biogas-microbiology [email protected] -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.bioenergylists.org/pipermail/digestion_lists.bioenergylists.org/attachments/20110606/6f3708e2/attachment-0001.html> ------------------------------ Message: 3 Date: Mon, 6 Jun 2011 07:32:02 -0700 From: Vianney Tumwesige <[email protected]> To: For Discussion of Anaerobic Digestion <[email protected]> Subject: Re: [Digestion] AD for cow manure Message-ID: <[email protected]> Content-Type: text/plain; charset="iso-8859-1" Hey Rex, Please contact Greg Austin ([email protected]), he has a company based in South Africa. I hope he will be of help. All the best On Sat, Jun 4, 2011 at 2:40 AM, Rex Zietsman <[email protected]>wrote: > David, > > What I have seen down here which sounds and looks attractive is the use of > bladders. Effectively the "inventor" scraped hollows with adjacent walls > and > put in heavy duty bladders that hold about 30m3. He has 11 of them and > empties and fills one a week with chicken litter. As the bladders are > black, > they absorb heat from the sun which helps keep the temperature up. He then > uses two bladders as his gas storage system. By packing rocks onto the > bladder, he can pressurise them to deliver gas using PVC piping to his > generator. His H2S removal system was two 200 litre drums welded together > and filled with machining swarf. Catchpots served both as flash back > arrestors and as condensate drains. Each bag costs about $1500. > > The benefit of this simple system is that it is easily tested at the > one/two > bag size. If successful ie convinces the farmer that it works, it can > easily > be expanded. At the same farm mentioned above, the farmer bought an old > scuba diving tank filling compressor and bought some old gas cylinders. He > then rigged his tractors and truck to take compressed biogas into their air > inlets and save diesel that way. So there are ways of extending the use of > biogas. > > If anyone can add to this type of debate, I believe it would be helpful not > only to me but the list in general. > > Kind regards > Rex > > -----Original Message----- > From: David Fulford [mailto:[email protected]] > Sent: 04 June 2011 10:59 AM > To: Rex Zietsman > Cc: [email protected] > Subject: Re: [Digestion] AD for cow manure > > Hello Rex and listers, > > It depends if you want a set of small cheap systems or a large-scale > sophisticated system. Farms with >500 cows probably need the type of > digester that have been developed by various different German companies. > They are designed to generate power and use hot water from the engine to > keep the temperature in the digester at an optimum value (35 deg.C). They > are designed to be as automated as possible. They use both dung and silage > as the main feedstocks. The only disadvantage is cost. > > In other parts of Africa there are small-scale systems that are much > cheaper, but rely on labour to run them. The majority of these systems use > the dung from just a few cattle to generate cooking fuel for a family. > However, there are much larger systems that can be used to run a generator. > > I do know of installers based in Tanzania and Kenya, capable of making the > larger-scale cheaper units, if you would be interested in this approach. > > Regards, > > David F > > Saturday, June 4, 2011, 7:42:52 AM, you wrote: > > > Hi all, > > > I am going to do something I swore I would never do. Unfortunately, I > > just don't have the time and know that the folks on this list know far > > more than me and can point me in the right direction. > > I live in a rural area where we are subject to occasional power cuts > > (power lines down mostly due to weather) but, more importantly, our > > power bills are rocketing as South Africa races to catch up to the > > rest of the world in terms of cost of power. Historically we had paid > > off coal fired power plants that gave us the lowest cost of power in > > the world. Anyway, now that power costs are rising, own generation is > becoming an economic necessity. > > > In my area we have a large number of dairy farms milking >500 cows. > > These are sizeable operations and the manure they produce is worth > pursuing. > > Typically they all have slurry dams and they spread their manure from > > time to time (much to our temporary dismay while the odour kills us!). > > The question is: what is an economical way of producing gas? Bear in > > mind, efficiency is not an issue in this case. What we are talking > > about is getting gas that can be cleaned up and fed into motors to > > produce power. I am looking at using 3 litre petrol engines that will > > push out about 50kW tops. So, we are not looking for anything fancy. A > > plugflow system would make most sense as they can pump it into the one > > end while the processed material leaves the other. Heating > > suggestions? What about using the engine exhaust to heat water and > > circulate that around the reactor or use it to preheat the incoming > > feed? Here I was simply thinking of a double tank with hot water in the > outer tank... any other suggestions? > > > The other thing these farmers use a lot of is sileage (chopped maize > > that is stored and allowed to ferment). Has anyone had experience > > adding some of this to the AD? > > > Looking forward to hearing from you all! > > Rex > > > > > _______________________________________________ > > 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.bioen > > ergylists.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/ > > > > > -- > Best regards, > David > mailto:[email protected] > ******************************************************************** > Dr David Fulford CEnv MEI, 15, Brandon Ave, Woodley, Reading RG5 4PU > [email protected], Tel: +44(0)118 326 9779 Mob: +44(0)7746 806401 > Kingdom Bioenergy Ltd, www.kingdombio.com, [email protected] > > > > > > > _______________________________________________ > 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/ > > -- Vianney Tumwesige Director - Green Heat (U) Ltd [image: Picture] P.O. Box 10235 Kampala-Uganda 256 (0) 71 237 9889 "The more people are self sufficient in cooking fuel, the more personal and financial freedom they have." - Emma Casson <http://trustvianney.wordpress.com/> -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.bioenergylists.org/pipermail/digestion_lists.bioenergylists.org/attachments/20110606/246361e8/attachment-0001.html> ------------------------------ _______________________________________________ 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/ End of Digestion Digest, Vol 10, Issue 5 **************************************** Se certificó que el correo entrante no contiene virus. Comprobada por AVG - www.avg.es Versión: 9.0.901 / Base de datos de virus: 271.1.1/3689 - Fecha de la versión: 06/08/11 15:34:00 _______________________________________________ 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/
