[Stoves] Jatropha and its future

[Anand Karve]

Dear Crispin,
we have in India castor hybrids that can yield upto 5 tons of seed or
2.5 ton oil per ha. Only Malaysian oil palm can outyield hybrid
castor. Castor oil acts as a purgative if one gulps it directly, but
if used in cooking or frying, whereby it gets mixed with other type of
food, it loses its purgative effect and it is digested by the human
system like any other vegetable oil. Castor oilcake is however highly
toxic because of the presence of ricin in it, but it is a great
feedstock for producing biogas.
Yours
A.D.Karve

On Mon, Aug 8, 2011 at 2:36 AM, Crispin Pemberton-Pigott
<crispinpigott at gmail.com> wrote:
> Dear Friends
>
> I am not sure how many stove are being worked on as Jatropha seed or oil or
> cake burners, but my understanding was the main thrust was to put to use
> some of the leftovers from biofuel production, especially that was the focus
> in Tanzania.
>
> It seems those farmers who invested in Jatropha production lost about $65
> per ha http://pubs.acs.org/doi/full/10.1021/es201943v so my question is
> whether or not there is much point in working on (perhaps) whole seed
> stoves. Perhaps if the J-oil industry suffers a quick death there will still
> be a meaningful supply of oily seed fuel that  can be burned relatively
> easily with a decent performance and controllability. At least until they go
> back to sunflower which looks a lot more promising.
>
> Has anyone made a sunflower seed burning stove? The oil runs up to 49% on
> some varieties.
>
> Always looking for new ideas…
>
> Regards
>
> Crispin
>
>
>
>
>
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-- 
***
Dr. A.D. Karve
President, Appropriate Rural Technology Institute (ARTI)

*Please change my email address in your records to: adkarve at gmail.com *