@momo @thomasfuchs so this improves outcome. But pyrolysis also produces gas which is much more difficult to sequester, so it's probably put to better use as fuel, possibly directly to help perform the pyrolysis.

Of course, that's for the long term. For the shorter to mid term, biomass carbon should be sequestered by making buildings out of wood, especially instead of making them from concrete or steel. Also a compounding effect there.