Alcohol-to-Jetプロセスによる持続可能な航空燃料生産の技術経済・環境・社会ライフサイクル評価 – 英国ケーススタディ
A Techno-Economic, Environmental and Social Life Cycle Assessments of Sustainable Aviation Fuel production via the Alcohol-to-Jet process – A UK Case Study (原題)
Ucheana C, Rojas-Michaga MF, Hughes KJ, Ingham D, Pourkashanian M
🤖 gxceed AI 要約
日本語
英国の麦わらを原料にAtJ経路でSAFを生産する統合バイオ精製をモデル化し、技術経済・環境・社会LCAを実施。GHG最大80%削減、SAF選択性68%、MJSPは£0.75〜4.53/kgで政策インセンティブに強く依存。原料・酵素・ユーティリティが主要コスト要因で、規模拡大が経済性を改善する。
English
This study models an integrated AtJ biorefinery using UK wheat straw, assessing techno-economics, environmental and social life cycle impacts. It finds up to 80% GHG reduction, 68% SAF selectivity, and an MJSP of £0.75–4.53/kg highly dependent on policy incentives. Feedstock, enzymes and utilities dominate costs, while scale-up improves economics.
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
日本でもSAFの国産化・供給目標が政策課題となっており、原料調達・コスト構造・政策依存性の分析枠組みは、国内SAF事業の事業性評価や航空分野のトランジション戦略に示唆を与える。
In the global GX context
As aviation decarbonisation moves up the ISSB/CSRD and transition-finance agenda, this UK case quantifies the policy sensitivity and life-cycle trade-offs of AtJ SAF, offering a replicable assessment template for jurisdictions scaling SAF mandates.
👥 読者別の含意
🔬研究者:AtJ経路のTEA・LCA・S-LCAを統合した評価手法と主要コストドライバーの定量結果を参照できる。
🏢実務担当者:SAF調達や自社脱炭素戦略において、コスト・GHG削減・政策依存性の前提を把握する材料になる。
🏛政策担当者:SAF普及にはインセンティブ設計と規制枠組みがMJSPを大きく左右する点を政策立案に反映すべき。
📄 Abstract（原文）
<title>Abstract</title> <p>This study presents a multi-dimensional (techno-economic, environmental, and social life cycle) assessment of sustainable aviation fuel production via the alcohol-to-jet pathway using lignocellulosic wheat straw and UK as a case study. A self-sufficient, integrated biorefinery was modelled in Aspen Plus®, incorporating in situ hydrogen and oxygen generation, enzyme production, co-product recovery (bio-naphtha, biodiesel), and waste-to-energy cogeneration. A techno-economic analysis was performed through discounted cash flow modelling, while environmental and social impacts were evaluated using ISO 14040/44-compliant life cycle assessment and PSILCA-based social life cycle assessment. Thermodynamic results indicate overall biomass-to-product conversion efficiency of 11% with 68% SAF selectivity, with >90% residue valorisation through a 66 MW Rankine-cycle cogeneration unit, enabling full internal energy supply and 48 MW of net electricity export. The economic analysis estimates capital and operating costs of £475 M and £193 M, with annual co-product revenues of £140 M. The Minimum Jet Fuel Selling Price ranges between £0.75 - £4.53/kg, strongly dependent on policy incentives and equity structure. Environmental assessment results show up to 80% greenhouse gas reduction compared to fossil jet comparator, while S-LCA highlights road transport and SAF production as the highest social risk sectors, with “fair salary” as the most critical indicator. Sensitivity and Monte Carlo analyses identify feedstock, enzymes, and utilities as dominant economic drivers, while scale-up from 1,000 to 4,000 t/day reduces MJSP substantially. Overall, the AtJ pathway demonstrates high SAF selectivity >70% and resource integration, offering strong potential for aviation decarbonisation under supportive policy and regulatory frameworks.</p>
🔗 Provenance — このレコードを発見したソース
- Research Square https://doi.org/10.21203/rs.3.rs-11013162/v1first seen 2026-10-02 04:20:37
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