β-alumina and green H2 production from discarded aluminum foil via a novel refined hydrolysis-calcination pathway process
Afef Bouazizi, Salah Jellali, I. Bekri-Abbes
🤖 gxceed AI 要約
日本語
この研究は、廃アルミ箔からグリーン水素とβ-アルミナ固体電解質を同時に製造する新規な加水分解-焼成プロセスを提案。廃棄物から97.5%の収率で水素を生成し、残渣からリチウムイオン電池用電解質材料を合成。循環型経済に貢献するゼロウェイストプロセス。
English
This study presents a novel integrated hydrolysis-calcination process to valorize aluminum multilayer packaging waste, producing green hydrogen (97.5% yield) and β-alumina solid electrolyte simultaneously. The low-temperature, zero-waste process exemplifies circular economy principles, converting waste into renewable fuel, battery material, recycled polymer, and cellulosic feedstock.
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
日本の水素基本戦略や廃棄物削減政策に直結する技術。特に、アルミ廃棄物からの水素製造は、国内の資源循環と水素サプライチェーン構築に貢献可能。
In the global GX context
This innovation aligns with global hydrogen economy and circular economy goals, offering a scalable method to produce green hydrogen and battery-grade materials from problematic waste streams. Relevant to ISSB and TCFD discussions on waste circularity in transition to net-zero.
👥 読者別の含意
🔬研究者:Demonstrates a novel pathway for simultaneous H2 and β-alumina production from waste Al, with kinetic analysis and material characterization.
🏢実務担当者:Offers a potential zero-waste process for recycling aluminum packaging into hydrogen fuel and battery materials.
🏛政策担当者:Highlights a circular economy approach that could inform waste management and hydrogen production policies.
📄 Abstract（原文）
ABSTRACT The escalating generation of multilayer packaging waste presents significant environmental challenges due to their complex laminated structure comprising paperboard, polyethylene, and aluminum foil. This study presents a novel integrated hydrolysis-calcination pathway for complete valorization of Aluminun multilayer pakaging waste, achieving simultaneous production of green hydrogen and β-alumina solid electrolyte. Following hot water separation of the paperboard fraction, the LDPE/aluminum laminate undergoes alkaline hydrolysis, generating hydrogen gas with a yield of 97.5% (215 mL from 5.9 g waste) while preserving intact LDPE film for direct mechanical recycling. Kinetic analysis reveals that increasing NaOH concentration reduces activation energy from 26.2 kJ/mol (1M) to 12.7 kJ/mol (4M). The resulting sodium aluminate solution is transformed into pure β-alumina (NaAl₁₁O₁₇) phase via controlled precipitation at pH 9 and calcination at 1000°C. Comprehensive characterization (XRD, SEM-EDS, FTIR, TGA, photoluminescence) confirms good material quality suitable for advanced energy storage applications. This zero-waste process exemplifies circular economy principles, converting challenging multilayer packaging into four high-value products: renewable hydrogen fuel, advanced battery electrolyte material, recycled polymers, and cellulosic feedstock. GRAPHICAL ABSTRACT
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://doi.org/10.1080/09593330.2026.2634285first seen 2026-05-15 20:44:22
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