[Digestion] Lessons Learned from the dissemination of Biodigesters for Sanitation in haiti, form 2010 to 2013.

[Murali Krishna]

Good day Dr. Karve,

Undoubtedly all the animals are mobile digesters and they convert their
food into energy and the undigested is let out into Nature. Law of Nature
does not permit 100% percent digestion of food in their digestive track and
they have to excrete and this excreta is food for some other animals that
exist down the line.  There used to be a recycling balance in the nature
when the species co-existed in a proportional order. Now due to the
explosion of population of species, living styles, dwelling space, and
several other changes, we find everywhere untreated waste. *Somewhere,
someone in the line has to handle waste and we cannot allow the fecal
matter release CH4 into atmosphere.* Urban dwelling seldom permit Nature to
take its own course and recycle nor we have space to let the other animals
roam around and take care of it for several reasons.

Now the question is whether recycling of excreta of species (including
human species) is worth recycling.  Yes, it is and it has to be.  We cannot
allow emissions even in small quantity. And this type of projects are
economically viable too!   Above all, now there is equipment to evacuate
the digesters.

Regards,

Murali Krishna

On Thu, Jan 8, 2015 at 9:58 AM, Anand Karve <adkarve at gmail.com> wrote:

> Dear Anthony,
> the report is too big for my computer to handle. Can you provide a
> short summary of the findings? As a person who has been studying
> biogas technology for the last 15 years, I have my own opinions about
> using fecal matter as a source of biogas. Please note that under
> anaerobic conditions, the microbes survive by taking oxygen from their
> food. Therefore, one must provide them with substances that contain
> oxygen in their molecules. The methanogens use the oxygen in their
> food for their own metabolism and give out methane. ammonia and H2S,
> none of which ontains oxygen. All animals, including humans represent
> living biogas plants and their fecal matter represents material that
> is predominently indigestible to the biogas producing organisms.
> Therefore, making biogas from feces of animals is not a very efficient
> way of getting biogas. Secondly, if you used human fecal matter as the
> major feedstock, and if by chance the biogas plant goes out of order,
> you may not find anybody willing to repair it.
> Yours
> A.D.Karve
> ***
> Dr. A.D. Karve
>
> Chairman, Samuchit Enviro Tech Pvt Ltd (www.samuchit.com)
>
> Trustee & Founder President, Appropriate Rural Technology Institute (ARTI)
>
>
> On Wed, Jan 7, 2015 at 8:50 PM, Anthony Kilbride
> <anthony.kilbride at gmail.com> wrote:
> > Dear Biodigestion list,
> >
> > Happy New year!
> >
> > I have been quietly observing the discussions of the Digestion list for a
> > year or more and I have gained a great insight into the world of ABD
> through
> > the various exchanges between members of the digestion list. I would
> like to
> > thank all of you who take the time to communicate your findings on the
> > forum; results, successes and challenges. The forum is truly a great
> > resource and it is wonderful to see so many individuals and groups from
> all
> > over the world who are so open and generous in sharing their information.
> >
> > I now have some information of my own to share, in the form of a lessons
> > learned document on the experiences of the dissemination of Biodigesters
> for
> > Sanitation in Haiti, from 2010 to 2013. The research was undertaken by
> the
> > NGO; Norwegian Church Aid (NCA).
> > The report in its entirety can be viewed here:
> >
> https://www.dropbox.com/s/8qqu3qpkhohatol/NCA_Biogas%20report_EN.pdf?dl=0
> >
> > Whilst sanitation and the corresponding public health gains are not the
> > objectives of many of the users of the forum (usually energy and
> recycling
> > of nutrients in slurry are the main objectives), there is nevertheless a
> > substantial volume of work being undertaken using biodigesters for
> > sanitation, and the Haitian experience is one such example which I hope
> will
> > provide interesting reading for biogas practitioners.
> >
> > I welcome feedback on the report, and I wish you all the greatest
> possible
> > success in 2015!
> >
> > Hoorooh!
> >
> > Anthony Kilbride.
> > WASH Manager.
> > NCA Haiti.
> >
> >
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> > for more information about digestion, see
> > Beginner's Guide to Biogas
> > http://www.adelaide.edu.au/biogas/
> > and the Biogas Wiki http://biogas.wikispaces.com/
> >
> >
>
> _______________________________________________
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> for more information about digestion, see
> Beginner's Guide to Biogas
> http://www.adelaide.edu.au/biogas/
> and the Biogas Wiki http://biogas.wikispaces.com/
>
>


-- 


Regards.

Murali Krishna





Protect Mother Nature
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