[Gasification] char and gasifiers

[Reg Preston]

>>> Reg,
>>>
>>> Your find discussions of this an related articles on the
>>> terra preta discussion list and website that we started in January.
>>> http://terrapreta.bioenergylists.org/
>>> http://bioenergylists.org/pipermail/terrapreta_bioenergylists.org/
>>>
>>> You will find links there for Cornell where Lehmann is and
>>> other charcoal research. Some people on the discussion list
>>> have started their own farm and garden tests of charcoal, on
>>> arid soils in Guinea and Australia, on alkaline soils in
>>> India, in China, "somewhere 20 miles south of Lake Erie,
>>> USA," in a nursery in Washington, etc.
>>>
>>> We're all learning what the agronomic value of the charcoal
>>> might be for different soils and plants. The results are not
>>> yet clear. At best it would be a good use for char from gasifiers.
>>>
>>> Tom

Thanks Tom

It seems to depend a lot on how the char is produced and from what kind of biomass.  The main issue would appear to be for how long is the carbon sequestered?

Reg

-- 
T R Preston

Senior Editor, Livestock Research for Rural Development
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