Hello Marc
snip
Aerobic composting produces a (very) useful
product, the compost, with the heat essentially a by-product, often a
waste-product (very under-utilized); anaerobic digestion primarily
produces energy, the biogas, and a resultant sludge that isn't useful
and is difficult to handle.
Keith wrote:
But piggeries and chicken yards are best part of a mixed farm, not
standalones. In Hong Kong's rural areas the guvmint, being a guvmint,
and very much subject to Chris's Leviathan's First Rule, decided
specializing was best. Previously the peasant system was mixed, like
all
- Original Message -
From: Marc de Piolenc [EMAIL PROTECTED]
To: Biofuel List biofuel@yahoogroups.com
Sent: Wednesday, September 18, 2002 02:46
Subject: [biofuel] Biogas Digester
Recently, there have been addenda to the anaerobic digestion schemes
involving an aerobic post
I found a web site that discusses an aerobic/anaerobic
biodigester. They claim that what is left after the methane
is removed is so clean that the effluent can be used as a
complete hydroponics solution or as a conventional organic
fertilizer. http://www.hydor.eng.br/Pag21-1.html
--- Keith
Sirs,
It may not be feasible to simultaneously utilise the heat of composting and the
methane.
Composting is an AEROBIC process while methane production is ANAEROBIC.
Different groups of bacteria which are entirely different are resposible for
the processes.
No utilisable heat is evolved in
hello Marc
Keith wrote:
But piggeries and chicken yards are best part of a mixed farm, not
standalones. In Hong Kong's rural areas the guvmint, being a guvmint,
and very much subject to Chris's Leviathan's First Rule, decided
specializing was best. Previously the peasant system was mixed, like
Kris Book wrote:
I found a web site that discusses an aerobic/anaerobic
biodigester. They claim that what is left after the methane
is removed is so clean that the effluent can be used as a
complete hydroponics solution or as a conventional organic
fertilizer.
- Original Message -
From: Keith Addison [EMAIL PROTECTED]
To: biofuel@yahoogroups.com
Sent: Wednesday, September 18, 2002 00:21
Subject: Re: [biofuel] Biogas Digester
Whatever one might think of Chairperson Mao, his Seven Characters,
rules for agriculture, were pretty good. One
Sirs,
It may not be feasible to simultaneously utilise the heat of
composting and the methane.
Composting is an AEROBIC process while methane production is ANAEROBIC.
Different groups of bacteria which are entirely different are
resposible for the processes.
No utilisable heat is evolved in
Read interesting article in Permaculture Magazine no.30 about Jean Pain and
his work with shredded woodland thinnings.
A search on the net turned up this
http://lists.ibiblio.org/pipermail/permaculture/2002-March/000294.html which
summerizes(follow the threads for more) .
Sorry if this has
Read interesting article in Permaculture Magazine no.30 about Jean Pain and
his work with shredded woodland thinnings.
A search on the net turned up this
http://lists.ibiblio.org/pipermail/permaculture/2002-March/000294.html which
summerizes(follow the threads for more) .
Sorry if this has
This post...
Read interesting article in Permaculture Magazine no.30 about Jean Pain and
his work with shredded woodland thinnings.
Interesting he produced methane from the woodland wastes
and used the
compressed gas for vehicles, machinery and generator. Used the heat of the
About the hazards of digesting. The el cheapo Fijian bag digesters are
actually quite safe.
1. No missiles - if they do explode, the bag ruptures and that is that.
2. Continuous rather than batch mode - less gas resident at any one time
3. Variable volume - collapses when gas is withdrawn,
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