The four terrestrial CDR (tCDR) -methods: (1) pyrogenic carbon capture (biochar), (2) en-hanced weathering (EW), (3) enhancement of soil organic carbon (SOC), and (4) biomass carbon capture (BCC) are not only those that can be implemented globally on short time horizons but they are highly complementary. To maximize the carbon sink potential per cultivated area of land, the co-application of these four tCDR methods needs to be investigated and optimized. For each of the tCDR methods, regional and global carbon sink estimates exist but as they have predominantly been studied separately, their global potential was apparently underestimated. Mechanistic understanding, experimental field data, dynamic models, implementation pathways, and thus upscaling assessments for their co-application are missing.
The PyMiCCS project will implement a combined experimental-modelling R&D pathway to close the knowledge gaps by quantifying the realistic C-sink potential for pre- and post-pyrolysis combinations of bio-char and rock powder and their effects on soils. It will use a cascade of iterative experiments and analyses from the lab to the field scale, with and without soils and plants, to produce the data needed to parameterize global models for C-sink potential analyses and to assess the economic feasibility. Specifically, it will produce the so-far lacking databases to develop a model-framework for CDR-potential assessment, including CDR co-benefit generation in different soils, climates and economic regions.
PIK estimates the economic potential of biochar, enhanced weathering and their combination with their land use model. Simultaneously, envorpnmental and socio-economic side-effects are assessed by different climativ and socio-economic development pathways.
