RE: DIG-L: community biogas in North America/Europe

[Effenberger Mathias <effenberger@tec.agrar.tu-muenchen.de>]

We are currently conducting research on a demonstration plant for dry
digestion of solid agricultural wastes. It's a batch system where the
material is piled into a sort of garage which is then closed. Additionally,
water is percolating through the pile and circulated back which provides an
inoculum. The material digests for about 60 days and the produced biogas is
used in a CHP-unit. The system is described on: http://www.bioferm.de/
(unfortunately, no English version of the website is available). However,
reliable data will not be available before next year.

Mathias Effenberger
Bayerische Landesanstalt fuer Landtechnik
Am Staudengarten 3
85354 Freising
GERMANY
phone: +49 8161 71-5157
fax:   +49 8161 71-4363
email: effenberger@tec.agrar.tu-muenchen.de

> -----Original Message-----
> From: Marty Climenhaga [mailto:mclimenhaga@macviro.com]
> Sent: Thursday, March 21, 2002 12:17 AM
> To: digestion@crest.org
> Subject: RE: DIG-L: community biogas in North America/Europe
> 
> 
> Thanks very much for your replies Stuart and Paul. The 
> question of dry 
> digestion reminds me of something I heard about a farm 
> practice of sealing 
> up hay in plastic, where it digests over the winter, and then 
> the bag is 
> cut open and the contents used for sileage (methane released to 
> atmosphere). Does anyone know about that or have I got the 
> facts wrong?
> 
> 
> >G'day Marty,
> 
> >For solid waste I think you should look at dry digestion, 
> which should
> >raise a few comments from others in the list more 
> knowlegable than I in
> >that area. That avoids the chopping/slurry but you may need 
> to develop
> >an inocculum.
> 
> -----Original Message-----
> From:	Marty Climenhaga [SMTP:mclimenhaga@macviro.com]
> Sent:	Tuesday, March 19, 2002 8:47 AM
> To:	digestion@crest.org
> Subject:	DIG-L: community biogas in North America/Europe
> 
> Hello all
> I'm working with a community group that has some funding to 
> explore options 
> for a very small-scale, low-tech biogas plant. They would like to see
> whether it is possible and how expensive it is to digest 
> about a tonne a
> week of foodscraps and garden waste, with the biogas being used for
> supplemental greenhouse heating.  I know there are lots of 
> examples of this 
> kind of scale digestion with manure in developing countries, 
> I have helped
> out with one in El Salvador, but I don't know whether it's 
> possible to do
> it here in Canada, especially with a feedstock that would have to be
> chopped up and slurried. I'm wondering whether anyone knows 
> of any examples 
> in North America or Europe or has any ideas to help me (my 
> first reaction
> is that regulatory issues and economics would make it very expensive /
> close to impossible here, but I can't necessarily prove that 
> it wouldn't
> work).
> Thanks for any thoughts at all.
> Marty
> 
> Marty Climenhaga, M.S. (Eng)
> MacViro Consultants Inc.
> 600-90 Allstate Parkway
> Markham ON L3R 6H3
> tel: 905-475-7270 ext. 289
> fax: 905-475-5994
> 
> 
> 
> 
> 
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http://www.crest.org/articles/static/1/1010424940_7.html

Beginners Tour of Biogas
http://WWW.roseworthy.adelaide.edu.au/~pharris/biogas/beginners

Digestion List Archives:
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Other Digestion Events and Information:
http://www.bioenergy2002.org
http://crest.org/discussiongroups/resources/biomass/biogas/BIOGASMK.pdf
http://www.crest.org/articles/static/1/1010424940_7.html

Beginners Tour of Biogas
http://WWW.roseworthy.adelaide.edu.au/~pharris/biogas/beginners

Digestion List Archives:
http://www.crest.org/discussion/digestion/200202/

Digestion List Moderator:
Paul Harris, paul.harris@adelaide.edu.au
http://www.roseworthy.adelaide.edu.au/~pharris
List-Post: <mailto:digestion@crest.org>
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Other Digestion Events and Information:
http://www.bioenergy2002.org
http://crest.org/discussiongroups/resources/biomass/biogas/BIOGASMK.pdf
http://www.crest.org/articles/static/1/1010424940_7.html

Beginners Tour of Biogas
http://WWW.roseworthy.adelaide.edu.au/~pharris/biogas/beginners