[Stoves] Hi tech cow dung technology (Anil Rajvanshi)

Sun Sep 4 23:35:12 CDT 2016

Dear Rolf,

when you decide on adopting any technology, you have to consider all the
pros and cons, economics and priorities. For a typical Indian farmer, using
dung as cooking fuel in the form of biogas is a very costly techbnology. He
would need about 40 kg dung every day for producing the necessary amount of
gas. Because of higher standard of living of people in the cities, the
ritual use of dung cakes and also their price has increased. The dung cakes
made from 40 kg dung can be sold for *US$1 *. Spending a dollar every day
for cooking the meals is absurd, because the food that the family eats,
costs less than that. We are advocating that villagers use biogas plants of
our design. 10 kg green leaves yield the same amount of biogas as 40 kg
cowdung, and it takes only three days for the leaves to do this, while dung
has to remain in the biogas plant for about 40 days.   Dung can be used as
an agricultural input. I have been advocating a type of agriculture which
uses no fertilizers, because all the minerals required by plants are
available in the natural soil. Just yesterday I saw on the t.v. an
interview of a proponent of this type of farming.  He claimed that about
four million farmers in India followed his advice. All he advocates is to
apply to the farmland 25 kg cowdung per ha, once a month. This keeps the
number of micro-organisms in soil  high, and it is the microbes which in
turn make the soil minerals available to the plants. In my lectures, I
advocate the use of 125kg green leaves per ha, once every two months.

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 Sun, Sep 4, 2016 at 9:18 PM, energiesnaturals <energiesnaturals at gmx.de>
wrote:

> Very true Anand, but kcals are not the whole story. Don't forget that
> biogas burns much more efficiently than dried dung, produces much less
> noxious smoke and one retains all the fertilizer for growing more. There
> are many Cs saved!
> B.R. from Rolf suffering from 42 C in Spain
>
> Von Samsung-Tablet gesendet
>
> Anand Karve <adkarve at gmail.com> hat geschrieben:
>
> Dear Nikhil,
> producing biogas from dung is a very wasteful process. 1 kg (dry weight)
> of dung, which would yield 4000 kcal energy if burned,  yields only about
> 200 kcal energy, if converted into biogas. In the city where I live,
> cowdung cakes are used in certain religious rites. They are sold at a
> lucrative price of about 9 USCents per piece. That would be a very
> attractive business for a Dutch dairy farmer, but drying the dung would be
> problematic in a country like holland.
> 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 Thu, Sep 1, 2016 at 10:27 PM, Traveller <miata98 at gmail.com> wrote:
>
>> Anil:
>>
>> Are you suggesting the USEPA folks should set emission targets for manure
>> management?
>>
>> I think they already do in the US. Now all we need is for GACC to claim
>> biogas as such superior clean cooking technology - Kirk Smith argued that
>> in 2000 and I fully agree, just that there is too much open defecation by
>> man and animal -  that ISO must have lab testing at various scales.
>>
>> Heck, I will even write the testing protocol and specify a standardized
>> bull, a standardized meal, standardized poop, ... They have the rest -
>> standardized water, standardized meals, standardized cooks. Just
>> unstandardized dose-response claptrap.
>>
>> Cow poop is ok, it is the Anthropocene bull manure that only a select few
>> can digest, anaerobically of course.
>>
>> "a small clay pisspot is a cutting-edge technology"?
>>
>> Yeah, for the New Age nuevau riche of the New york times.
>>
>> I once worked on a GHG offset project to both change cattle diet and to
>> reduce methane emissions. If I remember correctly, open cow manure in hot
>> areas dries up quickly and does not emit that much methane.
>>
>> But those who want to cook up numbers and careers, research papers and
>> propaganda, will stop at no BS.
>>
>> Seriously, the main point here is that biomass is not a climate-friendly
>> technology at all. Taken all the emissions from the production to
>> consumption of foods - including those due to cutting forests, open burning
>> of grass and leaves, forest fires - and valued in 20-year GWP terms, the
>> contribution to atmospheric concentrations is much greater than that, say,
>> from power generation.
>>
>> Go read Nadine Unger.
>>
>> Or Nick Stern, who I believe has gone veg. (I also hope he gave up
>> sugar.)
>>
>> Then again, there was some paper a few years ago claiming beef is a
>> superior food because its carbon footprint can be quite low.
>>
>> I prefer to be a horse. But I am fond of BS; academia and media give me
>> such earthy fragrances all the time.
>>
>> Nikhil
>>
>>
>> Message: 6
>> Date: Tue, 30 Aug 2016 10:41:04 +0530
>> From: nari phaltan <nariphaltan at gmail.com>
>> To: Discussion of biomass cooking stoves
>>         <stoves at lists.bioenergylists.org>
>> Subject: [Stoves] Hi tech cow dung technology
>> Message-ID:
>>         <CAGeG2tDBzt_RDONrSmo+u-WTpcS9DsFSXUiDOa28cj1npWO5Jw at mail.gm
>> ail.com>
>> Content-Type: text/plain; charset=UTF-8
>>
>> Hello stovers,
>>
>> You might enjoy reading this article in NY Times.
>> http://www.nytimes.com/2016/08/29/t-magazine/cow-poop-design
>> -museum-castelbosco-farm.html?emc=eta1&_r=0
>>
>> Cheers.
>>
>> Anil K rajvanshi
>>
>> --
>> Nimbkar Agricultural Research Institute (NARI)
>> Tambmal, Phaltan-Lonand Road
>> P.O.Box 44
>> Phaltan-415523, Maharashtra, India
>> Ph:91-2166-220945/222842
>> e-mail:nariphaltan at gmail.com
>>            nariphaltan at nariphaltan.org
>>
>> http://www.nariphaltan.org
>>
>>
>>
>> ------------------------------
>>
>>
>>
>>
>>
>>
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>
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