[Stoves] Stoves Digest, Vol 4, Issue 13

[Anand Karve]

Dear Kevin,
the slurry should be mostly lignin. The mucus in the dung is sticky. It
helps in holding the dung cake together, even when it is shaped by hand. In
the process of anaerobic digestion the mucus gets digested. I have not heard
of anybody using slurry from a biogas digester as domestic fuel, most
probably because that household would be using biogas as cooking fuel.
Frankly, I do not know if the slurry would be briquettable or not
Yours
A.D.Karve

On Wed, Dec 8, 2010 at 2:24 AM, Kevin <kchisholm at ca.inter.net> wrote:

>  Dear AD
>
> ----- Original Message -----
> *From:* Anand Karve <adkarve at gmail.com>
> *To:* Discussion of biomass cooking stoves<stoves at lists.bioenergylists.org>
> *Sent:* Tuesday, December 07, 2010 1:02 PM
> *Subject:* Re: [Stoves] Stoves Digest, Vol 4, Issue 13
>
> Dear Rajan,
> Transporting the wet slurry from a dung based biogas plant to the field is
> always a bother. One can allow the slurry to be filtered through a bed
> of straw. The water in the slurry drains out, leaving the relatively dryer
> slurry on the surface of the bed of straw.  The slurry, now devoid of most
> of its water is easier to handle and to transport
>
> # OK!! Do you think it might be possible to briquette the drained anaerobic
> residue ands a fuel or pellet? Does such residue have greater as an
> agricultural supplement than as a potential fuel?
>
>  Best wishes,
>
> Kevin Chisholm
>
> Yours
> A.D.Karve
> On Tue, Dec 7, 2010 at 11:58 PM, Kevin <kchisholm at ca.inter.net> wrote:
>
>> Dear Rajan
>> ----- Original Message ----- From: <rajan_jiby at dataone.in>
>> To: "Kevin" <kchisholm at ca.inter.net>; "Discussion of biomass cooking
>> stoves" <>>>
>>
>>>
>>> Dear Kevin,
>>>
>>> Well, we also use biogas plants where animal dung is a major feedstock.
>>>
>>> Here the energy part comes out as methane ( which is used as fuel ) and
>>> the slurry from the plant contains all the nutrients ( without any loss ).
>>>
>>
>> I have no experience with biogas plants run on animal manure. Is the
>> slurry from a biogas plant filterable? If so, would it potentially make a
>> fuel equivalent or superior to dung that was burned directly, with no
>> washing?
>>
>> As I understand it, Richard Stanley uses a retting process on biomass, to
>> develop binding characteristics for his holey briquette feed. Would the
>> drained solids from a biodigester perhaps have better "binder
>> characteristics than freshly washed dung? Perhaps Righard has already
>> explored this avenue?
>>
>> Best wishes,
>>
>> Kevin
>>
>>
>>
>>> Best Regards,
>>>
>>>
>>> Rajan
>>>
>>>
>>>
>>>
>>>
>>> -----
>>> No virus found in this message.
>>> Checked by AVG - www.avg.com
>>> Version: 10.0.1170 / Virus Database: 426/3302 - Release Date: 12/07/10
>>>
>>>
>>
>> _______________________________________________
>> Stoves mailing list
>>
>> to Send a Message to the list, use the email address
>> Stoves mailing list
>>
>> to UNSUBSCRIBE or Change your List Settings use the web page
>>
>> http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org
>>
>> for more Biomass Cooking Stoves,  News and Information see our web site:
>> http://www.bioenergylists.org/
>> Stoves at lists.bioenergylists.org
>>
>> http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org
>>
>
>
>
> --
> ***
> Dr. A.D. Karve
> President, Appropriate Rural Technology Institute (ARTI)
>
> *Please change my email address in your records to: adkarve at gmail.com *
>
>
>
>  ------------------------------
>
> _______________________________________________
> Stoves mailing list
>
> to Send a Message to the list, use the email address
> Stoves mailing list
>
> to UNSUBSCRIBE or Change your List Settings use the web page
>
> http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org
>
> for more Biomass Cooking Stoves,  News and Information see our web site:
> http://www.bioenergylists.org/
> Stoves at lists.bioenergylists.org
>
> http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org
>
> ------------------------------
>
> No virus found in this message.
> Checked by AVG - www.avg.com
> Version: 10.0.1170 / Virus Database: 426/3302 - Release Date: 12/07/10
>
>
> _______________________________________________
> Stoves mailing list
>
> to Send a Message to the list, use the email address
> Stoves mailing list
>
> to UNSUBSCRIBE or Change your List Settings use the web page
>
> http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org
>
> for more Biomass Cooking Stoves,  News and Information see our web site:
> http://www.bioenergylists.org/
> Stoves at lists.bioenergylists.org
>
> http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org
>
>


-- 
***
Dr. A.D. Karve
President, Appropriate Rural Technology Institute (ARTI)

*Please change my email address in your records to: adkarve at gmail.com *
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.bioenergylists.org/pipermail/stoves_lists.bioenergylists.org/attachments/20101208/290494b1/attachment.html>