Pathways

Technology pathways are not interchangeable.

Different materials require different conversion routes, storage outcomes, and verification evidence. MSW2CDR separates pathway discovery from verified removal claims so supply chain partners, buyers, reviewers, and facilities can move responsibly.

Pathway family

AD + CO₂ storage

Wet biogenic materials such as food scraps, grocery organics, beverage residue, and source-separated organics may support AD systems. CDR requires captured biogenic CO₂, durable storage, emissions accounting, and leakage controls.

Potential fitFood waste, wet organics, source-separated organics, digestate-adjacent streams.
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Pathway family

Biochar and solid carbon

Clean biomass can be pyrolyzed into more stable solid carbon for soil, non-soil, material, or storage applications. Feedstock quality, contaminants, durability, and end use decide route status.

Potential fitWood, yard trimmings, clean dry fiber, selected residuals, screened overs.
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Pathway family

Hydrothermal carbonization / hydrochar

Wet biomass may be processed under heat and pressure to produce hydrochar and other outputs. This is relevant where drying costs make conventional pyrolysis difficult.

Potential fitFood waste, wet fiber, biosolids-adjacent organics, digestate.
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Pathway family

BECCS / gasification + CCS

Prepared biogenic waste may be converted for energy, syngas, fuels, heat, power, or products with CO₂ capture and durable storage. Fossil carbon fractions must be separated in accounting.

Potential fitDry biomass, clean wood, paper/cardboard residuals, controlled biogenic fractions.
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Pathway family

Mineralization and carbonated materials

Captured biogenic CO₂ can be reacted into stable mineral carbonates or used in carbon-storing materials. This is often a destination for captured CO₂ rather than raw MSW itself.

Potential fitBiogenic CO₂ from AD, fermentation, BECCS, or other processing.
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Pathway family

Bio-oil or liquid carbon storage

Biomass may be converted into a liquid carbon product and stored in accepted durable storage routes where project criteria are met.

Potential fitClean dry biomass, selected wood/fiber streams, technology-specific feedstocks.
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Pathway family

Biomass burial / solid storage

Some woody or lignin-rich biomass may support long-term storage under controlled conditions. This requires careful durability, leakage, and alternative-fate analysis.

Potential fitWood, brush, yard trimmings, tree waste, selected dry biomass.
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Pathway family

Existing facility retrofit routes

Existing composting sites, AD facilities, transfer stations, WtE assets, landfills, and organics processors may be upgraded with carbon capture, pyrolysis, HTC, mineralization, biochar, or MRV systems.

Potential fitExisting facilities with recurring biogenic streams and operational control.
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Readiness discipline

MSW2CDR separates emerging routes from verified project outcomes.

A pathway can be scientifically promising without being buyer-ready. The atlas distinguishes existing methodology routes, buyer-backed routes, emerging routes, and site-specific retrofit opportunities. This keeps the platform ambitious without overstating readiness.