[Digestion] The relatively high cost of digesters.

[Paul Harris]

G'day All,

One reason for the "high" cost of digesters is that "Westerners" seem to
have a preoccupation with complexity and large, centralised facilities -
which "we" expect to inflict on the rest of the world.

The small, simple, decentralised systems used extensively in China, India
and more recently Columbia, Vietnam, Cambodia and Bolivia and reported by
some members of this discussion group are making a big improvement to the
environment by providing convenient, clean fuel without deforestation or
fossil fuel depletion. They may not win on "biogas per unit digester volume"
or "throughput per day" and will not make corporate profits but they do lift
people from poverty, ease the grind of daily life and may well get more
biogas per unit of VS/COD, compared to "our" large units.

I agree you get what you pay for and there are bound to be improvements that
may need to be done, but it's also "horses for courses".

Happy digesting,
HOOROO

Mr. Paul Harris, Room S116b, Waite Main Building Faculty of Sciences, The 
University of Adelaide, Waite Campus, PMB 1, Glen Osmond SA 5064 Ph    : +61
8 8303 7880      Fax   : +61 8 8303 4386
mailto:paul.harris at adelaide.edu.au  
http://www.adelaide.edu.au/directory/paul.harris

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-----Original Message-----
From: digestion-bounces at lists.bioenergylists.org
[mailto:digestion-bounces at lists.bioenergylists.org] On Behalf Of Edgar
Blanco-Madrigal
Sent: Tuesday, 7 December 2010 10:51 PM
To: For Discussion of Anaerobic Digestion
Cc: digestion
Subject: Re: [Digestion] The relatively high cost of digesters.

In AD the universal principle applies: 
"You get what you pay for"

You can build a cheap digester, and produce gas, etc. But you should not
pretend this in any way will be helping the environment, because to do that
money has to be committed in the whole operation. 

SNIP

Please, do not peddle technology on the basis of its low cost, do it on the
basis of quality!