海運代替燃料のライフサイクルアセスメントに関するレビュー：方法論、多次元評価、脱炭素化経路
A Review of Life Cycle Assessment for Marine Alternative Fuels: Methodology, Multidimensional Evaluation, and Decarbonization Pathways (原題)
Hongyu Li, Chenxi Li, Xin Song, Weizhuang Ma, Shaobo Yang, Qunhong Tian, Hongwei Chang, Yicheng Wen, Yude Shao
🤖 gxceed AI 要約
日本語
IMOとEUの厳格な海運脱炭素政策を背景に、LNG・メタノール・アンモニア・水素・バイオ燃料・電池の物性・効率・普及状況を整理したレビュー。IMO 2024燃料LCAガイドラインとWell-to-Wake算定枠組みを軸に、環境・経済・技術・社会の多次元性能を比較する。システム境界や排出係数の相違が燃料評価のばらつきを生む点を指摘し、方法論標準化・不確実性分析を今後の課題とする。
English
This review synthesizes LCA advances for marine alternative fuels—LNG, methanol, ammonia, hydrogen, biofuels, and batteries—covering properties, efficiency, and deployment. It outlines the IMO 2024 Fuel LCA Guidelines and well-to-wake framework, then compares environmental, economic, technical, and social performance. Divergences in system boundaries and emission factors drive reported discrepancies; standardization and uncertainty analysis are flagged as priorities.
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
IMOのLCAガイドラインとEUの海運脱炭素規制は、日本の海運・造船・エネルギー企業の燃料選択やScope 3算定に直結する。SSBJ開示や有報での排出量報告を進める日本企業にとって、WtW算定の標準化動向を把握する材料となる。
In the global GX context
The IMO 2024 Fuel LCA Guidelines and EU shipping rules are shaping global well-to-wake accounting, which underpins Scope 3 reporting for shipping-dependent value chains. The review's focus on methodological standardization speaks directly to ISSB/CSRD-aligned emissions accounting debates.
👥 読者別の含意
🔬研究者:海運燃料LCAの方法論的ばらつきと標準化課題を整理する基礎資料となる。
🏢実務担当者:海運を利用する企業のScope 3算定や燃料調達判断にWtW枠組みの理解が役立つ。
🏛政策担当者:IMO・EU規制下での燃料評価標準化と不確実性対応の論点を提供する。
📄 Abstract（原文）
Driven by global climate goals and stringent shipping decarbonization policies led by the International Maritime Organization (IMO) and the European Union, green alternative fuels have become a key pathway toward net-zero shipping. Life cycle assessment (LCA) is essential for quantifying the environmental performance of marine fuels and supporting fuel selection, policy making, and industrial deployment. However, existing studies still diverge in system boundary setting, emission factor selection, and methodological frameworks, leading to considerable discrepancies in reported fuel performance and constraining their large-scale deployment. This review synthesizes recent advances in the LCA of marine alternative fuels. It summarizes the physicochemical properties, energy conversion efficiency, propulsion configurations, and deployment status of mainstream options, including LNG, methanol, ammonia, hydrogen, biofuels, and battery power. It then outlines the standardized LCA framework for marine fuels, represented by the IMO 2024 Fuel LCA Guidelines and the well-to-wake (WtW) accounting framework. On this basis, it compares the environmental, economic, technical, and social performance of these fuels and discusses the major methodological debates and remaining challenges. Finally, it identifies future research priorities, including methodological standardization, integrated multidimensional assessment, and uncertainty analysis. These findings can inform the selection of shipping decarbonization pathways and further marine fuel LCA development.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.3390/jmse14212069first seen 2026-11-06 05:04:39
- semanticscholar https://doi.org/10.3390/jmse14212069first seen 2026-11-06 05:37:12
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