航空・海運の脱炭素化：クリーン燃料経路、ライフサイクルGHG性能、導入戦略の比較評価
Decarbonizing Aviation and Maritime Transport: Comparative Assessment of Clean Fuel Pathways, Life Cycle Greenhouse Gas Performance, and Deployment Strategies (原題)
Malik Sajawal Akhtar, Diego Moya, Muhammad Abdul Qyyum, Haris Ishaq, Amjad Riaz, Jay J. Liu
🤖 gxceed AI 要約
日本語
航空・海運の脱炭素化に向け、水素・アンモニア・メタノール・SAF・PtL/e-fuel・バイオLNGを比較したレビュー。Well-to-wakeのLCAと技術経済性、インフラ、規制整合性を分けて評価。航空はHEFA-SAFが近-term最有力、PtLは電力・水素・CO2制約が大きい。海運はメタノールが早期統合に有利で、アンモニア・水素は貯蔵・安全・インフラ面の制約が残る。一律の優劣ではなく文脈依存のポートフォリオとシステム統合の視点を支持する。
English
This review compares hydrogen, ammonia, methanol, SAF, PtL/e-fuels, and bio-LNG for aviation and shipping decarbonization, using well-to-wake LCA, techno-economics, infrastructure, and regulatory alignment. HEFA-SAF is the strongest near-term aviation option, while PtL is constrained by electricity, hydrogen, and CO2 needs. For maritime, methanol offers favorable near-term integration, whereas ammonia and hydrogen face storage, safety, and maturity barriers. The authors argue for a context-dependent fuel portfolio rather than a universal hierarchy.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
日本は航空・海運の国際競争力とエネルギー安保の観点から次世代燃料の導入戦略が政策課題。本レビューは燃料別のLCA・コスト・インフラ制約を整理し、国内のSAF・水素・アンモニア供給計画やGX推進の投資判断に実務的示唆を与える。
In the global GX context
Aligns with global transport transition policy (ICAO CORSIA, IMO GHG strategy) and transition-finance discussions on hard-to-abate sectors. The comparative LCA and cost framing helps investors and disclosure teams assess fuel-pathway credibility and stranded-asset risk in aviation and shipping.
👥 読者別の含意
🔬研究者:燃料経路間のLCA・技術経済比較の方法論的課題と、Well-to-wake評価の境界設定の重要性を学べる。
🏢実務担当者:航空・海運の脱炭素調達やScope 3排出削減計画において、燃料別のコスト・インフラ制約を踏まえた現実的なポートフォリオ検討に使える。
🏛政策担当者:SAF・PtL・メタノール等の導入支援策やインフラ投資の優先順位を、燃料別の制約と成熟度に基づき設計する際の参考になる。
📄 Abstract（原文）
Decarbonizing aviation and shipping requires low-carbon fuels whose climate performance depends on production route, electricity source, feedstock, conversion efficiency, infrastructure, and end-use conditions. This review compares hydrogen, ammonia, methanol, sustainable aviation fuels (SAF), power-to-liquid (PtL)/e-fuel pathways, and biomethane/bio-liquefied natural gas (bio-LNG) using a structured evidence-mapping approach and critical comparative synthesis of peer-reviewed literature and authoritative institutional evidence available through 2026. Owing to methodological heterogeneity, results were not statistically pooled. Well-to-wake accounting was preferred for life-cycle greenhouse-gas (GHG) comparisons, while technology readiness, techno-economics, infrastructure, regulatory alignment, and sectoral suitability were assessed separately. For aviation, normalized production costs are USD2020 44.97/GJ-LHV for hydroprocessed esters and fatty acids (HEFA)-SAF and USD2020 74.80/GJ-LHV for PtL-SAF. PtL production requires about 42 kWh electricity/kg fuel and, in one pathway, 0.8 kg H 2 and 3.1 kg CO 2 /kg SAF. For maritime transport, equivalent fuel-volume requirements are approximately 1.8, 2.5, 3.1, and 4.6 times those of heavy fuel oil (HFO) for bio-LNG, methanol, ammonia, and liquid hydrogen, respectively. Drop-in SAF remains the strongest near-term aviation option, whereas PtL pathways are more constrained by electricity, hydrogen, and CO 2 requirements. In maritime transport, methanol offers favorable near-term integration, while ammonia and hydrogen remain constrained by storage, safety, infrastructure, and technology maturity. Across both sectors, performance remains sensitive to electricity carbon intensity and price, feedstock and CO 2 availability, methane leakage, plant utilization, infrastructure, and system boundaries. The review supports a context-dependent portfolio and system-integration perspective rather than a universal fuel hierarchy.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1016/j.adapen.2026.100318first seen 2026-11-10 05:08:38 · last seen 2026-11-13 05:20:11
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