CO2回収と廃バイオマス価値化を結ぶ炭素統合ノード：触媒、原料制約、システム性能

Unofficial AI-generated summary based on the public title and abstract. Not an official translation.

🔬研究者:統合CO2–バイオマス経路の評価指標と炭素収支の報告枠組みを整理できる。

🏢実務担当者:CCUS・カーボンリサイクル投資の気候便益主張をLCAと炭素永続性で裏付ける際の報告項目を学べる。

🏛政策担当者:CCUS・バイオマス統合技術の支援判断に、炭素保持と水素・電力炭素強度を条件とする評価軸を提供する。

A carbon-circular refinery must do more than place CO2 capture, biomass conversion, and catalytic upgrading in the same flowsheet: it must connect them at integration nodes where carbon losses, feed composition, catalyst durability, hydrogen demand, and separation duty can be evaluated together. This critical review therefore focuses on four nodes: recovery of biogenic CO2 from biomass processing; coupling of captured CO2 with biomass-derived methane or syngas; co-processing of CO2-derived intermediates with biomass-derived oxygenates; and allocation of residual carbon between fuels, chemicals, biochar, and geological storage. For each node, we compare feed conditioning, catalyst function, realistic impurities, deactivation and regeneration, product separation, demonstrated operating evidence, and system-level carbon consequences. Thermochemical routes are distinguished from electrochemical and photoelectrochemical routes rather than treated as interchangeable alternatives. The analysis shows that integration is most credible when a concentrated biogenic CO2 stream or a compatible biomass-derived co-reactant is available, the catalyst is tested with water and heteroatom-containing feeds, and renewable hydrogen and separation requirements are reported explicitly. High conversion or Faradaic efficiency alone does not establish climate benefit. Reactor-level carbon conversion, plant-wide carbon retention, life-cycle greenhouse-gas reduction, and carbon permanence must be reported separately. A unified set of benchmarking metrics, screening-level carbon and energy balances, and an indicative technology-readiness assessment are used to compare the routes; for example, electrolytic-hydrogen-based CO2 products deliver a climate benefit only when the electricity used has a low carbon intensity, whereas biomass-derived carbon requires about one-third of the hydrogen per mole of retained carbon. The resulting framework identifies the evidence needed to move integrated CO2–biomass pathways from conceptual coupling toward durable, scalable operation.

• openalex https://doi.org/10.3390/catal16110990first seen 2026-11-12 05:00:42 · last seen 2026-11-14 05:06:14