[Stoves] Biogas technology

[frank]

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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-- 
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