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Sustainable utilisation of waste carbon zinc battery derived carbon rods as cathodes in peroxicoagulation based wastewater treatment

使用済み炭素亜鉛電池由来カーボンロッドのペルオキシ凝固法廃水処理におけるカソードとしての持続可能な利用 (AI 翻訳)

Bibin K. Suresh, T K R Singh

Figshare📚 査読済 / ジャーナル2026-07-21#その他経営インパクト: コスト削減対象セクター: manufacturing
DOI: 10.6084/m9.figshare.33053063
原典: https://doi.org/10.6084/m9.figshare.33053063

🤖 gxceed AI 要約

日本語

本研究は、使用済み炭素亜鉛電池から得たカーボンロッド（CR-CZb）を廃水処理の代替カソードとして活用する。酸処理により窒素含有量が3%向上し、特定表面積が8.923 m²/gに改善。最適条件（pH3、電流密度30 mA/cm²、120分）でTN 76.36%、COD 94.32%、TOC 90.23%の除去効率を達成。廃電池の有効活用と環境負荷低減に貢献する。

English

This study innovatively uses carbon rods from waste carbon-zinc batteries as cathodes for electrochemical wastewater treatment. Acid modification enhances nitrogen content by 3% and increases specific surface area to 8.923 m²/g. Optimal removal efficiencies for TN, COD, and TOC reach 76.36%, 94.32%, and 90.23% respectively at pH 3, current density 30 mA/cm², and 120 min. It demonstrates sustainable valorization of battery waste.

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

日本の廃電池リサイクルや排水処理技術において、低コスト電極材料としての可能性を示すが、直接的な脱炭素（GX）への寄与は限定的。循環経済の観点から関心を持たれる可能性がある。

In the global GX context

This paper contributes to circular economy and wastewater treatment innovation but has limited direct relevance to climate disclosure, carbon accounting, or transition finance. It may interest practitioners in industrial water treatment and waste valorization.

👥 読者別の含意

🔬研究者:Electrochemical wastewater treatment researchers can explore waste-derived electrode materials for improved efficiency.

🏢実務担当者:Industrial wastewater treatment facilities could consider using waste battery rods as low-cost electrodes.

🏛政策担当者:Policymakers may note the potential for promoting battery waste recycling in environmental applications.

📄 Abstract（原文）

The present study innovatively employs waste-derived carbon rods from used carbon-zinc batteries (CR-CZb) as an alternative cathode for the electrochemical treatment of wastewater. The acid modification of CR-CZb using HNO<sub>3</sub> resulted in an enhancement of nitrogen content by 3% and introduced -C-OH- and -N=O- functional groups, which was verified by EDX and FTIR analysis. BET analysis indicated an improvement in the specific surface area to 8.923 m<sup>2</sup>/g for CR-CZb-HNO<sub>3</sub> and revealed a pore size of 20.7 nm. XRD results confirmed the characteristics of graphitic carbon materials in CR-CZb-HNO<sub>3</sub>. LSV confirmed a peak current density of ∼8 mA/cm<sup>2</sup> for CR-CZb-HNO<sub>3</sub> compared to CR-CZb, which may improve the electroactivity for the two-electron ORR pathway. The experiments were systematically conducted in mixed dye wastewater by varying parameters, such as pH, current density and electrolysis duration. The optimal removal efficiencies achieved through the peroxicoagulation process for TN, COD and TOC removal were 76.36%, 94.32% and 90.23%, respectively, at a pH of 3, a current density of 30 mA/cm<sup>2</sup> and an electrolysis time of 120 min. This study demonstrates that the waste carbon rods from used batteries can become a source of inexpensive electrodes that can degrade the pollutants.

🔗 Provenance — このレコードを発見したソース

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