Re: DIG-L:GAS TREATMENT ENQUIRY

[Paul Harris <Paul.Harris@adelaide.edu.au>]

G'day All,

150mm (6") of water is a low pressure and can easily be developed in a
digester (even a plastic film one, if the plasitc could not stand this
pressure it would burst under weight of water unless VERY carefully
supported), you just consider the pressure in the design (basically by
raising the overflow by this amount). Sufficient weight on the gas
storage (which may be the digester itself) will maintain this pressure
during use.

HOOROO

Steve&Anne wrote:
> 
> 1. ".... I'm interested in anaerobic digestion to produce methane to use
> for cooking, driving gas engine. ...." enquiry by Julian
> 
> 2. Marty replied ".......for iron oxide I think you can use steel wool, you can just put a wad of it in a
> removable part of your gas outlet pipe and change it every six months........."
> 
> With regard to what I know of your project - I plan to use steel wool also - but a byproduct is water so
> a drain point nearby is required.
> I would recommend that you consider using green matter with the cattle manure as it gives a better yield
> of methane.
> Like you, I am interested in building a small scale digester in order to utilise the gas.
> 
> I am very keen to discuss design objectives and methodologies to attain these objectives.
> 
> Since you plan to scrub the biogas - how do you plan to boost the gas pressure (which I think you will
> have to do) in order to scrub it and then to store it? I see from websites, that commercial operators are
> delivering the gas, via a blower, to
> engines or boilers at about 150mm (manometer pressure of water).
> 
> Kia Ora (NZ greeting)
> Steve Rodda
> 
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> 
> Beginners Tour of Biogas
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-- 
Paul Harris
Agronomy & Farming Systems
Faculty of Sciences
Adelaide University, Roseworthy Campus, AUSTRALIA 5371
Ph    : +61 8 8303 7880
Fax   : +61 8 8303 7979
mailto:paul.harris@adelaide.edu.au
http://www.roseworthy.adelaide.edu.au/~pharris

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Digestion List Archives:
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Digestion List Moderator:
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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