Dear Elisabeth,
"the other year" Iplanned a similar operation for the slaughterhause
wastes of Mallorca.
I talked intensively to competent folks from Svizzerland,Spain, Germany
anc the Cheq Republic.
Sterilization is a must, but the main concern was that a high N
feedstock must be compensated by at least 70 % C for a feasable
digestion and the C source must be reliable!
There can also arise issues with the effluent, check your local laws if
you want to use it as a fertilizer or dispose of it.
We gave up before we really began because we could not organize a
reliable C base.
This should not discourage you, your circumstances might be better.
Good luck!
Rolf
Am 12.08.2012 21:00, schrieb [email protected]:
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Today's Topics:
1. need for assistance (Elisabeth Staniewski)
----------------------------------------------------------------------
Message: 1
Date: Sat, 11 Aug 2012 23:33:09 -0600
From: Elisabeth Staniewski<[email protected]>
To: [email protected]
Subject: [Digestion] need for assistance
Message-ID:
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Dear Friends at DigestionDigest,
I have been a member of DigestionDigest for many years, but last three
years I was off work force due to health issues and was not participating
in the discussions. Finally last week I landed a new research project.
In the past, I have completed a number of projects on renewable energy,
including biogas from anaerobic digestion processes; no detailed
calculations though, assessing technical, environmental and economic
aspects of a variety of processes/technologies. I learned two days ago
what my next research work will be about; it is a very fascinating project,
and I am looking forward to begin. The company is planning to build a
pilot plant to convert a mixture of organic waste into biogas; it is a
thermal hydrolysis process (high pressure, 125 degrees C) that is going to
process a mixture of organic waste: about 35% of SRM/specified risk
material (slaughterhouse by-products, high probability BSE/Mad Cow
Disease), the rest being cow manure and food waste. Government
Environmental Agency has reviewed an application for approval and came up
with several questions with regards to additional required information.
According to my knowledge there is none presently operating similar process
and therefore no factual information is available. And, I am going to be
the one who has to deliver best estimates available. Do you know about any
similar process, either operating or in a research stage, or lab stage that
I can learn about? I would very much appreciate any assistance. Looking
forward to our communication again.
Best Regards,
Elisabeth Staniewski
Alberta, Canada
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End of Digestion Digest, Vol 24, Issue 6
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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/
