[Stoves] Vegetable oil or biodiesel?

[Anand Karve]

Dear Agnes,
edible oil is used mainly in frying. The cook generally knows how much
oil to take in the pan. During the process of frying, a part of it
gets absorbed in the substance being fried and a part evaporates.  The
quantity of oil in the pan goes on diminishing, as one fries
successive batches of food. Thus eventually the oil in the pan is
finished. Nothing is left to throw away.
 Yours
A.D.Karve

On Wed, Nov 9, 2011 at 11:46 PM, Agnes Klingshirn <aklingshi at t-online.de> wrote:
> Dear AD,
> yes, it can be re-used, but the question is, how often can you do that and
> what happens with it afterwards; is it thrown away then, fed to the pigs, or
> could it be filtered and used as a fuel? Agnes Klingshirn
>
> -----Ursprüngliche Nachricht-----
> Von: stoves-bounces at lists.bioenergylists.org
> [mailto:stoves-bounces at lists.bioenergylists.org] Im Auftrag von Anand Karve
> Gesendet: Mittwoch, 9. November 2011 16:32
> An: Discussion of biomass cooking stoves
> Betreff: Re: [Stoves] Vegetable oil or biodiesel?
>
> Dear Richard,
> vegetable oil is used in India mainly as a medium for frying. One uses
> the left over oil again for the next batch to be fried. Throwing away
> used edible oil is not a common practice. It is generally re-used.
> Yours
> A.D.Karve
>
> On Wed, Nov 9, 2011 at 8:57 PM, Richard Stanley
> <rstanley at legacyfound.org> wrote:
>> Dear AD,
>>
>> Thanks for that elucidation about fresh veggie oil use in India but what
> about the spent, or in local jargon, waste veggie oil ?
>> Is it not filterable and heatable and useable a fuel ?
>>
>> Richard Stanley
>> Arusha Tz.,
>>
>> On Nov 8, 2011, at 3:25 AM, Anand Karve wrote:
>>
>>> Dear Stovers,
>>> in India, we import more than 50% of our edible vegetable oil. The
>>> non-edible plant oils are used industrially for fatty acid extraction,
>>> soap making, in paints, and nowadays also for biodiesel production. As
>>> a result, even the non-edible oils are quite costly. There is a trend
>>> nowadays of removing the non-edible ingredients from non-edible oils
>>> to make them edible. Thus, cottonseed oil and rice bran oil, which
>>> were considered to be non-edible, have now become edible. Biodiesel
>>> made from plant oil costs almost twice as much as petroleum based
>>> diesel. It is much cheaper to run internal combustion engines on
>>> biogas. Every city has a vegetable market, which generates huge
>>> quantities of vegetable waste. The wholesale vegetable market of
>>> Mumbai generates daily about 50 truckloads of waste. It has a
>>> potential of producing daily about 50 tons of biogas, which in turn
>>> would generate about 50 megawatts of electricity daily. Manufacturers
>>> have started manufacturing engines, made specifically to accept biogas
>>> as fuel. I am currently heading a project, aimed at developing a rural
>>> biogas system using green leaves as feedstock. It is funded by the
>>> Government of India.
>>> Yours
>>> A.D.Karve
>>>
>>> On Tue, Nov 8, 2011 at 8:53 AM, Darren <mail at vegburner.co.uk> wrote:
>>>> Liquid vegetable oils make excellent vehicle fuels.  Solid fats burn
> well in
>>>> diesel engines although fully heated fuel systems are required to get
> fats
>>>> to flow to the engine.
>>>>
>>>> Always feels a bit of a waste using them in heaters or generators.  No
> doubt
>>>> in some situations it makes sense.
>>>>
>>>> Best
>>>>
>>>> Darren
>>>>
>>>>
>>>>
>>>>
>>>
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>
>
> --
> ***
> Dr. A.D. Karve
> Trustee & Founder President, Appropriate Rural Technology Institute (ARTI)
>
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-- 
***
Dr. A.D. Karve
Trustee & Founder President, Appropriate Rural Technology Institute (ARTI)