Plants draw down so much carbon from the atmosphere in producing their biomass that their impact on atmospheric CO2 levels is visible as the downward strokes of the Keeling curve. Every year, as the northern hemisphere enters its growing season, CO2 levels worldwide take a downturn. The problem is that the decay of all of this biomass and the burning of biomass in uncontrolled wildfires results in the release of CO2 back into the atmosphere.
The emissions from a biomass gasifier genset of this type are about 18% CO2 (460 times more concentrated than the atmospheric CO2), but all of the carbon content of these emissions came from the atmosphere rather than from fossil sources. Feeding the emissions of a biomass gasifier into a limestone calcium reactor would give it the concentrated CO2 it needs to operate efficiently.
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