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

Sun Sep 4 10:48:10 CDT 2016

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 gesendetAnand 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
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Subject: [Stoves] Hi tech cow dung technology
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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

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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
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