[Terrapreta] Charcoal costs

[Nikolaus Foidl]

Dear all!

My charcoal costs at a charring efficiency of 42 % is around 35 US$ per ton
Charcoal. Now after analyzing 15 year old soil where huge amounts of forest
where simply burned and charred. Now excavating I find huge amounts of only
torrefied wood pieces which as well did not degrade, like the charcoal
chunks.
Now looking at this and if torrefied wood would do the same as is charcoal,
why not save a huge amount of additional CO2 and just torrefy the stuff and
mill it and then burry it? Cost per ton would drop to half, CO2 taken out of
the atmosphere rise by 50 to 70 %.
Just an idea but maybe worth to be discussed.
Best regards Nikolaus