If you want to capture the most of the carbon, you cook the wood in an oxygen free environment turning it to charcoal and liberating volatile components (which could be used as carbon neutral fuel to run the furnaces)
Nothing can eat charcoal, so it could be stored cheaply
Decomp still sequesters carbon.
Sure, burning them releases a portion back, but not most of it…
What do you think comprises ash?
If you want to capture the most of the carbon, you cook the wood in an oxygen free environment turning it to charcoal and liberating volatile components (which could be used as carbon neutral fuel to run the furnaces)
Nothing can eat charcoal, so it could be stored cheaply