Agricultural waste seems like a better use case, but that's just my sensibilities. A fluidized bed of 700C supercritical CO2 would be able to thermally crack w

Agricultural waste seems like a better use case, but that's just my sensibilities. A fluidized bed of 700C supercritical CO2 would be able to thermally crack woody biomass quite effectively. The remaining biochar could be used for carbon sequestration (reverse mining) by adding it to soil as an amendment to improve it's nutrient holding capabilities, ion exchange and friability.