[Digestion] High costs of biogass plants in Norway

Edgar Blanco-Madrigal edgarb at summerleaze.com
Mon Dec 6 05:03:29 CST 2010


The environmental case for small scale AD plants should also be considered, and this is the main concern, and where larger scale more technically managed AD plants are far superior. 
Significant effort goes into minimising un-combusted emissions of CH4, ammonia, or, even worse: nitrous oxide. Operators of large scale AD plants control the process from the factory to the land where digestates are applied. It certainly is convenient, and useful for cheap, small-scale, low tec plants to be used in poorer regions , but by no means should anyone pretend it is ideal. 

Regards 

Edgar 

----- Original Message -----
From: Anand Karve <adkarve at gmail.com>
To: paul harris <paul.harris at adelaide.edu.au>, For Discussion of Anaerobic Digestion <digestion at lists.bioenergylists.org>
Sent: Mon, 06 Dec 2010 04:48:48 -0000 (GMT)
Subject: Re: [Digestion] High costs of biogass plants in Norway

Dear Paul,
the European countries and also the USA have rather strict rules, specifying
what a biogas plant should do and how it should be made. In India, the
biogas plants are constructed by village artisans, using locally available
material. There do not exist any specifications regarding the material to be
used. The Governments in the West do not realise that biogas is a very safe
technology. I have not heard of a single accidental explosion or of a fire
arising from a biogas plant, but one reads almost daily about explosions and
fires from LPG.  There were even reports from South America of a
sausagelike biogas plant made out of relatively thin plastic film. I don't
think there has been an accident with any of those, but something like that
would never be allowed in Europe or USA. There also appear to be rules
about effluents from a biogas plant. Antibiotics were mentioned in one of
the previous postings. Do they really persist in the effluent?
Yours
A.D.Karve

On Mon, Dec 6, 2010 at 8:19 AM, Paul Harris <paul.harris at adelaide.edu.au>wrote:

>  G’day All,
>
>
>
> Please try to accept peoples personal opinions without attacking the
> person. If the opinion appears wrong to you leave individuals out and
> explain your own point of view, please.
>
>
>
> In my opinion anaerobic digesters are just part of a waste treatment system
> that may also generate energy and organic fertiliser. The type of digester
> needs to be selected keeping in mind the expertise and situation/climate in
> which the digester will operate. With this in mind the digesters suitable
> for Europe (and North America?) will probably not be suitable for most
> situations in Australia (where we have LOTS of space and technical support
> may be a long distance away) and definitely not for some of the less
> developed tropical countries. That said why should the less developed
> countries (who need, not want, energy more than Europe and USA) be deprived
> of the benefits of AD, where some treatment is better than none, because
> they don’t meet “our” standards?
>
>
>
> We are all trying to learn, but I think one of the reasons AD is not
> greatly accepted/adopted in Australia is the perceived complexity/cost.
>
>
>
> 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 <paul.harris at adelaide.edu.au>
> http://www.adelaide.edu.au/directory/paul.harris
>
>
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-- 
***
Dr. A.D. Karve
President, Appropriate Rural Technology Institute (ARTI)

*Please change my email address in your records to: adkarve at gmail.com *





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