シナジーフレームワークによる中国のトウモロコシ茎由来SAF生産の炭素削減ポテンシャルと経済的実現可能性の空間的差異
Spatial Differentiation of Carbon Mitigation Potential and Economic Viability of Corn-Straw-Based SAF Production in China Through a Synergy Framework (原題)
Mao Mu, Leyou Wang, Yamin Hu, Sunel Kumar, Shuang Wang
🤖 gxceed AI 要約
日本語
中国のトウモロコシ茎を原料とする持続可能な航空燃料（SAF）について、LCAを用いて炭素削減効果と経済性を地域別に評価した。水熱液化（HTL）が61.4%と最も高い削減効率を示し最適とされる。茎の20%をSAF、80%を土壌還元に配分すると年55.0Mt-CO2eqの削減が可能で、炭素クレジットを考慮すればHTLは全州で化石ジェット燃料と競争力を持つ。
English
This study uses lifecycle assessment to evaluate carbon mitigation and economic feasibility of corn-straw-based SAF in China across APR, HTL, and gasification-FT pathways. HTL shows the highest mitigation efficiency (61.4%) and is optimal; a 20/80 straw allocation to SAF and soil retention yields 55.0 Mt CO2-eq annually. With carbon credits, HTL is cost-competitive with fossil jet fuel in all provinces, while APR remains unviable.
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の国産供給体制構築が政策課題となっており、原料調達の地域偏在や土壌炭素とのトレードオフを定量化した本手法は、日本のSAF導入戦略やGX経済移行債の対象事業評価に示唆を与える。
In the global GX context
As global aviation decarbonization accelerates under ICAO/CORSIA and national SAF mandates, this paper's spatially explicit LCA and feedstock-allocation trade-off framework offers a transferable method for assessing SAF viability and carbon-credit competitiveness in other jurisdictions.
👥 読者別の含意
🔬研究者:SAFの原料供給制約と土壌炭素のトレードオフを地域別LCAで扱う手法は、他国・他原料への応用研究の参照枠となる。
🏢実務担当者:SAF調達や炭素クレジット活用を検討する企業は、原料立地とプロセス選択がコスト競争力に与える影響を把握できる。
🏛政策担当者:SAF導入支援や炭素価格設計において、地域別の削減ポテンシャルと原料配分ルールの重要性を示す。
📄 Abstract（原文）
Sustainable aviation fuels (SAFs) are critical for aviation decarbonization, yet feedstock supply-side trade-offs, including spatial variability and straw return to soil, are often overlooked. This study integrates energy and ecological assessments via lifecycle assessment to evaluate carbon mitigation and economic feasibility of corn-straw-based SAF in China using aqueous phase reforming (APR), hydrothermal liquefaction (HTL), and gasification–Fischer–Tropsch (FT) synthesis. HTL shows the highest mitigation efficiency (61.4%) and greatest potential, and is therefore optimal. Spatially, mitigation potential is highly heterogeneous, concentrated in northeastern and northern China, while some western and southern provinces show low or negative mitigation under FT synthesis. A 20%/80% straw allocation to SAF and soil retention yields 55.0 Mt CO2-eq annually, 29.6 Mt of additional mitigation from fuel substitution and 25.4 Mt of maintained soil carbon sequestration. Economically, with carbon credits, HTL is cost-competitive with fossil jet fuel in all provinces, saving 241–1730 yuan/t (≈36–260 USD/t), highest in Inner Mongolia, Xinjiang, Heilongjiang, Liaoning, and Ningxia (1510–1730 yuan/t). FT synthesis has reached cost parity in some provinces, whereas APR remains unviable, costing 1700–3210 yuan/t (≈255–482 USD/t) more than fossil jet fuel. These findings support regional SAF deployment and China’s carbon neutrality goals.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.3390/su182110806first seen 2026-10-27 04:55:11 · last seen 2026-11-06 05:03:29
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