石炭フライアッシュの新たな価値化経路：炭素回収、戦略的元素回収、ポリマー複合材料
Emerging valorization pathways for coal fly ash: carbon capture, strategic element recovery, and polymer composites (原題)
Zhenhua Wan, Chao Yu, Tianwei Zhang, Kangyi Xu, Kai Shen, Yaping Zhang
🤖 gxceed AI 要約
日本語
石炭火力発電の副産物である石炭フライアッシュ（CFA）の従来型利用（建設・環境修復・農業）は低付加価値に留まる。本レビューはCFAの物理化学的特性を整理し、CO2回収材料、リチウム・ガリウム・希土類元素（REE）の選択的回収、CFA系ポリマー複合材料という3つの高付加価値経路を検討する。長期安定性、抽出効率、界面適合性などの課題と、技術成熟度・拡張性・経済性・環境影響を比較し、ライフサイクル評価とテクノエコノミック評価の必要性を指摘する。
English
This review examines coal fly ash (CFA) valorization beyond low-value bulk uses, focusing on three high-value pathways: CO2 capture materials, selective recovery of lithium, gallium and rare earth elements, and CFA-based polymer composites. It discusses mechanisms, performance, and persistent challenges such as limited long-term stability, low extraction efficiency, and poor interfacial compatibility, comparing technological maturity, scalability, economics, and environmental implications. The authors call for improved material design, scalable processing, and comprehensive life-cycle and techno-economic assessments to transition CFA from waste to resource.
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
日本は石炭火力依存が残り、石炭灰の有効利用は廃棄物削減と資源循環の両面で重要である。CO2回収材料や希土類回収は、資源安全保障とGX産業競争力に直結し、国内の石炭灰利用政策やカーボンニュートラル戦略に示唆を与える。
In the global GX context
Globally, coal fly ash valorization intersects with CCUS deployment, critical mineral supply chains, and circular economy goals. For disclosure scholarship, it highlights the need for life-cycle and techno-economic evidence to support transition finance and ESG assessments of industrial by-product utilization.
👥 読者別の含意
🔬研究者:石炭灰の高付加価値利用における材料設計と抽出効率の課題を整理し、今後の研究課題を提示する。
🏢実務担当者:石炭灰を排出する電力・製造業にとって、CO2回収材料や希土類回収による新たな収益源と廃棄物削減の可能性を示す。
🏛政策担当者:石炭灰の資源化とCO2回収・重要鉱物回収を促進する政策設計に、技術成熟度と経済性の観点から示唆を与える。
📄 Abstract（原文）
Coal fly ash (CFA), a massive by-product of coal-fired power generation, poses significant environmental and health risks if improperly managed. Conventional bulk utilization of CFA in construction, environmental remediation, and agriculture is largely confined to relatively low-value-density sectors and is subject to inherent limitations. This review summarizes the physicochemical properties of CFA and discusses both conventional and emerging utilization pathways, with particular emphasis on three potential high-value routes: CFA-derived materials for CO 2 capture, selective recovery of strategic elements, particularly lithium, gallium, and rare earth elements (REEs), and CFA-based polymer composites. Key mechanisms, performance characteristics, and persistent challenges such as limited long-term stability, low extraction efficiency, and poor interfacial compatibility, are discussed. Comparative considerations of technological maturity, scalability, economic feasibility, and environmental implications are further highlighted based on available literature evidence. Future development requires improved material design, scalable processing strategies, and comprehensive life-cycle and techno-economic assessments to facilitate the transition of CFA from a waste by-product to a valuable resource for sustainable technologies.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1016/j.fuel.2026.141291first seen 2026-09-16 04:39:28
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