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Decomposing plant matter creates C02 and methane, so Hugelkultur only suquesters carbon for short periods. Biochar, a.k.a. terrapreta which is buried wood char
by nanomonkey 9y ago
Decomposing plant matter creates C02 and methane, so Hugelkultur only suquesters carbon for short periods. Biochar, a.k.a. terrapreta which is buried wood charcoal, on the other hand is thought to be inactive in the soil for closer to 10k years.
One can combine energy production from wood gasification, which produces char-ash and biochar to produce a carbon negative electricity source. Taking this a step further one can use the Fischer–Tropsch process on the resultant syngas to produce liquid fuels.
- foxhop 9y agoIt sequesters it for 10-30 years and then the plants and trees that are grown on or near it further sequesters CO2 and carbon. I think of composition as a "slow burn" (merging back with air). Also creating bio-char is a pain in the ass and not passive at all.
- BenjiWiebe 9y agoOne benefit of biochar is that it anecdotally increases soil fertility, so maybe you could produce more bio diesel while you are at it.