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The Building Blocks of CDR Systems • Carbon Dioxide Removal Primer

cdrprimer.org · 26,408 words · saved by 1 readers

The previous chapter explained why carbon dioxide removal is necessary to combat global temperature increases, what constitutes negative emissions, and the connection of CDR to the global carbon cycle. It also discussed the potential benefits and costs of negative emissions, especially in the context of social justice. This chapter provides an overview of the types of CDR approaches that have been developed or are being developed today. Together, they comprise a portfolio of approaches, or “building blocks,” for CDR systems. As introduced in Section 1.2, the concept of “potential CDR” is critical when evaluating specific CDR approaches. While all the approaches discussed in this chapter have the capacity to achieve net-negative emissions, they will not do so under all conditions. Life cycle analysis, discussed in detail in Chapter 4, provides one tool for evaluating whether net negativity can be achieved under different deployment assumptions. This chapter introduces each of the potent

The Building Blocks of CDR Systems • Carbon Dioxide Removal Primer Authors Mineralization Greg Dipple, Peter Kelemen, and Caleb M. Woodall Ocean Alkalinity Enhancement Phil Renforth and Ben Kolosz Soil Carbon Sequestration Keith Paustian, Pete Smith, Rory Jacobson, and Margaret Torn Forest Carbon Bill Anderegg, Jeremy Freeman, Rory Jacobson, and Margaret Torn Coastal Blue Carbon Tiffany Troxler Biochar Erica Belmont, Daniel L. Sanchez, Pete Smith, and Margaret Torn BECCS Erica Belmont, Rory Jacobson, and Daniel L. Sanchez DAC Noah McQueen and Jennifer Wilcox Geological Sequestration Susan Hovo

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