[Stoves] Re Looking for sustainable non wood biomass offtake info off Miombo forest

[Anand Karve]

Dear Richard,
agriculture produces a lot of waste biomass without using extra land,
water, fertilizers or efforts. In India, we generate annually about 800
million tonnes of agricultural waste. It contains almost 2.5 times as much
energy as the petroleum that we import every year. The only disadvantage in
the case of agricultural waste is that it is not centrally available but
lies scattered in millions of small farms. If a fair price is offered to
the farmers for this biomass, they transport it at their own cost to a
central processing factory. About 100 factories in Maharashtra State
(India) buy the agricultural waste from farmers and press it into
briquettes. These briquettes burn just like wood. Fuel oil, which is
traditionally used as boiler fuel in the factories, costs about 1 US$ per
litre. The calorific value of the petroleum based fuel oil can be matched
with about 2.5 kg biomass briquettes, which cost only about USCents 30.
Retrofitting furnaces to accept biomass briquettes has grown into a big
business here.
Yours
A.D.Karve

On Tue, Nov 29, 2011 at 3:12 PM, Richard Stanley
<rstanley at legacyfound.org>wrote:

> Paal,
>
> Thanks for that insight on wood availability. As related to it, the
> question the biomass briquetter has to ask is, how much NON wood biomass is
> generated yearly and of that how much is available for use in biomass
> briquetting. Of course its a small faction of the wood harvest but its
> available each and every year the tree is live… We had prepared some tables
> of different biomass sustainable offtake, in cooperation with a long
> established Japanese agrofrestry project in Uganda and the Uganda Forestry
> department back in 2003 when we were writing our theory and applications
> manual  but the tables are only generalised for a set of different
> bioregions and land use types.
>
> It would be interesting to get your own take on Miombo forest per se.
>
> Richard / freezing in Dar es Salaam
>
>
>  On Nov 13, 2011, at 10:47 AM, Paal wendelbo wrote:
>
>   Crispin, Anderson and others****
>                 A common Miombo forest in **Africa** will give about 3
> ton wood per ha a year. 3 ton of dry wood will give **800 kg** of
> charcoal. A household of 5 consume 2-**3 kg** charcoal a day or about **800
> kg** a year. To produce **3 kg** of charcoal you need 10-**12 kg**of dry
> fire wood in a common kiln. That will give one day cooking on a charcoal
> stove, and almost no biochar. 10-12kg dry chopped wood will give 3 days of
> cooking on a TLUD-ND or another **FES** and **2.5 kg** of biochar   ****
>                 Energy forestry using just the sprouting every year can
> give up to 10 ton wood per ha a year, easy to cut to appropriate fuel for
> TLUD-ND’s or other types of **FES**. By adding some biochar to soil of
> bad quality 20-30 % increased yields can be obtained, which will give more
> food, more household energy, more jobs, better economy, better health for
> women and children and saving the forest. It can probably be as simple as
> this and is that not some of what we are looking for and need?****
>                 We know some changes have to take place on the household
> energy sector and we have to start somewhere. Why not start with small
> scale farmers on sandy soil, and from there develop the new household
> bio-energy strategy for developing countries. Probably also with the
> charcoal business, they have the whole infrastructure intact and can easy
> change from charcoal to alternative biomass like chopped wood or pellets
> from agriculture and forestry related waste. Or do you have a better
> solution Crispin?****
> With regards Paal W****
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-- 
***
Dr. A.D. Karve
Trustee & Founder President, Appropriate Rural Technology Institute (ARTI)
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