Listers, including Dr Chanakya and Duncan Martin, Hello,
The aerobic pre-digestion system that is becoming commercial is the
Nisargruna system developed by Dr Kale of BARC
<http://www.barc.ernet.in/akruti-tp/atp_nisar.html> (Bhaba Atomic
Research Centre), Mumbai, India. One of the groups marketing the system
is Greentech-Ensys <http://www.green-ensys.org/site/Biogas_Plant.html>
who provide useful information on the technology on their website. Dr
Kale has written a paper on the system
<http://www.scpmaharashtra.com/docs/nisargruna.pdf>.
The system is designed for the organic component of municipal solid
waste. According to the literature on AD, the first stage, hydrolysis,
is carried out by facilitative bacteria that can live with or without
oxygen. Tests that I did many years ago showed that these bacteria will
grab oxygen from the air in the gas space above the slurry, when a
biogas plant is started. Thermophyllic aerobic hydrolysis is aggressive
and breaks down carbohydrates and proteins into soluble fatty acids. If
the process is stopped after a limited time, the risk of breaking these
materials completely into carbon dioxide and water should be reduced.
Best wishes,
David F.
On 19/10/2010 15:46, Duncan Martin wrote:
Good idea. It's not a subject I know much about but I am sure some of
our colleagues can help.
Duncan
On 19 October 2010 14:03, Hoysall Chanakya
<[email protected] <mailto:[email protected]>>
wrote:
Dear Dr Martin,
I wonder if we could pick up the thread where we abruptly left off
at the
aerobic pre-digestion of agro residues as a possible means to avoid or
substitute pretreatment that is required for digesting
agro-residues in
predominantly liquid digesters - I am sure there would be a wealth of
experience and may be direction to head if a lot of NZ and Australian
farms are trying to go green and sustainable
with best wishes
chanakya
--
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
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--
********************************************************************
Dr David Fulford CEnv MEI, 15, Brandon Ave, Woodley, Reading RG5 4PU
[email protected] <mailto:[email protected]>, Tel:
+44(0)118 326 9779 Mob: +44(0)7746 806401
Kingdom Bioenergy Ltd, www.kingdombio.com <http://www.kingdombio.com>,
[email protected] <mailto:[email protected]>
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for more information about digestion, see
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and the Biogas Wiki http://biogas.wikispaces.com/
