Valorization of agricultural hazelnut waste into high-surface-area activated carbon: sustainable methodology for accurate VOC capture and thermodynamic assessment
農業ヘーゼルナッツ廃棄物の高表面積活性炭への価値化：正確なVOC捕集と熱力学的評価のための持続可能な方法論 (AI 翻訳)
Erdal Kuşvuran, Ali ŞAMİL
🤖 gxceed AI 要約
日本語
本研究では、トルコの農業副産物であるヘーゼルナッツ殻から、環境に優しい水蒸気活性化法により高表面積（820 m²/g）の活性炭を合成した。新たに開発した閉ループリザーバーシステムにより、従来法では過小評価されていたVOC捕集率を正確に測定し、熱力学パラメータを導出。アルキル置換基のサイズと吸着効率の相関を示し、持続可能なVOC除去材料としての可能性を実証した。
English
This study synthesizes high-surface-area activated carbon (820 m²/g) from hazelnut shells via eco-friendly steam activation. A novel closed-loop reservoir system achieves true thermodynamic equilibrium, overcoming the underestimation of VOC recovery (up to 22%) in traditional single-pass systems. The adsorption is spontaneous and exothermic, with a clear correlation between alkyl substituent size and efficiency, highlighting sustainable VOC abatement.
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
日本ではヘーゼルナッツ廃棄物は一般的ではないが、バイオマス廃棄物の活性炭化とVOC除去の方法論は、食品加工廃棄物や剪定枝など他の農業残渣の有効活用に応用可能。GX開示とは直接関係しないが、カーボンリサイクル技術として環境負荷低減に貢献する可能性がある。
In the global GX context
This paper offers a methodological improvement (closed-loop equilibrium) for accurate adsorption measurement, relevant to carbon material synthesis and air pollution control globally. While not directly tied to climate disclosure or decarbonization, it supports circular economy and sustainable manufacturing practices.
👥 読者別の含意
🔬研究者:Provides a methodological advancement (closed-loop system) for accurate adsorption equilibrium measurement, relevant for carbonaceous adsorbent research.
🏢実務担当者:Demonstrates a sustainable route for converting agricultural waste into high-performance adsorbent for VOC control, potentially applicable to industrial emission treatment.
📄 Abstract（原文）
The conversion of agricultural residues into high-performance carbonaceous materials is a pivotal strategy for the circular economy and sustainable environmental remediation. In this study, we report the synthesis of high-surface-area activated carbon (AC) from hazelnut shells—a major agricultural byproduct in Turkey—via an eco-friendly steam activation protocol. The synthesized AC, characterized by a significant surface area of 820 m 2 /g and a well-developed microporous structure, was evaluated for the dynamic capture of a series of alkyl-substituted benzene volatile organic compounds (VOCs). A major methodological challenge in gas-phase adsorption—achieving true thermodynamic equilibrium—was addressed by implementing an innovative closed-loop reservoir (balloon) system. This novel setup provided sufficient residence time to overcome steric hindrance within the porous network, ensuring rigorous adsorption-desorption equilibrium. Comparative analysis revealed that traditional single-pass systems significantly underestimate VOC recovery by up to 22% and fail to provide reliable thermodynamic parameters. Based on high-precision equilibrium data, the adsorption process was found to be spontaneous (ΔG 0 < 0) and exothermic (ΔH 0 < 0), with a clear mechanistic correlation between the size of the alkyl substituent and adsorption efficiency due to enhanced Van der Waals interactions. These findings demonstrate that hazelnut shell-derived AC is a sustainable and highly efficient adsorbent for VOC abatement, provided that methodological accuracy is maintained through closed-loop equilibrium designs.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1038/s41598-026-63988-wfirst seen 2026-07-30 05:33:10
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