[Stoves] Biogas technology

[adkarve]

Dear Frank, the diffusion of carbon dioxide from the gas holder into the
atmosphere is more pronounced in a smaller biogas plant like the ARTI biogas
plant, because the area of the slit around the gas holder is relatively
large in proportion to the toal surface area of water in the digester.
Therefore, proportionately more CO2 escapes into the atmosphere from a
smaller biogas plant than from a biogas plant having a large diameter. The
process is accelerated if you increased the weight of the gas holder
pressing on the biogas.
Yours
A.D.Karve
----- Original Message -----
From: frank <frank at compostlab.com>
To: Choppalli Venkata Krishna <krishnacreat1 at rediffmail.com>; Discussion of
biomass cooking stoves <stoves at listserv.repp.org>
Sent: Monday, August 27, 2007 10:45 PM
Subject: Re: [Stoves] Biogas technology


> Stovers,
>
> Much like a compost operation, if you have a large quantity of material
> at one time, from area collection or cleaning out a stock yard, it is
> best to build a large batch system. But, like home composters, producing
> small amounts of biodegradable waste at a time that cannot be stored I
> suggest Dr. Karve's flow through system. I like the simplistic system Dr
> Karve has introduced. It fits in well with the home that produces a
> little every day and, at the same time, needs a little nutrients (the
> waste product) for fertilizing the home plants. I like the fool proof
> pressure system that has no chance of leaks and I am intrigued with the
> idea that CO2 is removed from the gas because the pressure inside the
> gas container has a higher pressure than the small slit around the edge
> permitting the CO2 to escape around the edge. I need to think about this
> more but it sounds reasonable. One thing is for sure, is that pH control
> is needed in the liquid for ideal CO2 control, but that is the same for
> both systems..
>
> I have seen the large batch inflating systems and worked on finding uses
> for the large amounts of waste that is available all at one time.
> Storing organic products to ready for filling the system and disposing
> of both the liquid and solid waste at the end without disrupting the
> neighbors or contaminating the ground water is a challenge.
>
>
> Just my two cents
>
> Frank
>
>
> Choppalli Venkata Krishna wrote:
>
> >See papers at: http://www.bioenergylists.org/en/chopalliartibiogas
> >
> > > Sent: Saturday, August 25, 2007 11:04 PM
> >
> >
> >>>To: stoves at listserv.repp.org
> >>>Cc: anildhussa at yahoo.com
> >>>Subject: [Stoves] Biogas technology
> >>>
> >>>  Dear Stovers,
> >>>While going through the conference delibrations of each participant, I
> >>>was for a while stuck up with some doubts and had referred Dr. Karve's
> >>>Paper on Biogas Technology to one Anil Dhussa, Director, Ministry of
> >>>New & Renewable Energy Sources, Govt. of India seeking a clarification.
> >>>Both Dr. Karve's Paper & Anil Dhussa's Report are enclosed.
> >>>For comments and opinions ,please.
> >>>- Krishna
> >>>
> >>>
> >
> >_______________________________________________
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> >http://listserv.repp.org/mailman/listinfo/stoves_listserv.repp.org
> >http://stoves.bioenergylists.org
> >http://info.bioenergylists.org
> >
> >
> >
> >
> >
>
> --
> Frank Shields
> Soil Control Lab
> 42 Hangar way
> Watsonville, CA  95076
> (831) 724-5422 tel
> (831) 724-3188 fax
> frank at compostlab.com
> www.compostlab.com
>
>
>
>
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