直接空気回収（DAC）
Puro.earth
Geologically Stored Carbon Methodology for CO2 Removal, Edition 2024 v. 2
PURO-EARTH-GEOLOGICALLY-STORED-CARBON-2024
永続性1,000年
反転リスク中
貯留媒体地質
経路直接空気回収（DAC）
適用条件（eligibility）
CO2 must be captured from direct air capture (DAC) or eligible biogenic sources (BECCS, waste-CCS) and injected into deep geological reservoirs (typically >800m depth) in jurisdictions with robust legal frameworks. For biomass-based projects, feedstock must be proven sustainable and traceable. Storage site must be approved by competent local authorities with permits for injection and geological storage. Projects must demonstrate additionality (revenues driven by carbon finance, not required by law) and prevent double-counting of removal claims.