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Modifying Activated Carbon with 2-Amino-<i>p</i>-cresol as a Low-Cost Adsorbent for Removing Hg(II) and Pb(II) Ions from Aqueous Solution

2-アミノ-p-クレゾールで修飾した活性炭による水溶液中のHg(II)およびPb(II)イオン除去のための低コスト吸着剤 (AI 翻訳)

Zuhair A. Abdulnabi, Muhand Kadhum AL-Tememi, Ahmed Y. Hammood, Rana Tariq Shabili, Lina Alaa Mousa, Meaad Khalaf Hussain

Indonesian Journal of Chemistry📚 査読済 / ジャーナル2026-07-29#その他対象セクター: water_treatment
DOI: 10.22146/ijc.107736
原典: https://doi.org/10.22146/ijc.107736

🤖 gxceed AI 要約

日本語

活性炭を2-アミノ-p-クレゾールで修飾し、水溶液中のHg(II)およびPb(II)イオンを高効率で除去する低コスト吸着剤を開発した。バッチ吸着実験により、Hg2+で99.68%、Pb2+で90.27%の除去率を達成し、吸着容量はそれぞれ4539.08および2248 µg/gであった。吸着データはFreundlichおよびLangmuirモデルに適合し、熱力学的解析により吸着プロセスの性質を解明した。HClを用いた脱着・回収も検討した。

English

A low-cost adsorbent was developed by modifying activated carbon with 2-amino-p-cresol for efficient removal of Hg(II) and Pb(II) ions from aqueous solutions. Batch experiments achieved removal efficiencies of 99.68% for Hg2+ and 90.27% for Pb2+, with adsorption capacities of 4539.08 and 2248 µg/g, respectively. Adsorption data fitted Freundlich and Langmuir models, and thermodynamic analysis elucidated the adsorption nature. Desorption and recovery using HCl were also investigated.

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

水処理技術であり、日本のGX文脈では直接的な関連は薄いが、産業排水処理や環境浄化の観点で参考になる可能性がある。

In the global GX context

This paper focuses on water treatment technology, which is relevant to environmental remediation but not directly linked to climate disclosure or transition finance. It may offer insights for industrial wastewater treatment in global contexts.

👥 読者別の含意

🔬研究者:Adsorption mechanisms and thermodynamic parameters for heavy metal removal.

🏢実務担当者:Potential low-cost adsorbent for wastewater treatment in industrial settings.

📄 Abstract（原文）

A novel approach was developed to modify activated carbon with 2-amino-p-cresol, aiming to synthesize a cost-effective adsorbent for removing mercury and lead ions from polluted water. The synthesized adsorbent was characterized using powder XRD, SEM-EDS, and FTIR. To evaluate the modified surface's removal efficiency, elemental concentrations in aqueous solutions were determined using FAAS and CVAS. Batch adsorption experiments were conducted to investigate the simultaneous removal of Hg2+ and Pb2+ ions, with particular focus on key operational parameters, including contact time, temperature, mixing speed, and solution pH. The results demonstrated exceptional removal efficiencies, achieving 99.68 and 90.27% for Hg2+ and Pb2+ ions, respectively, with adsorption capacities of 4539.08 and 2248 µg/g, respectively. Adsorption data were analyzed using three isotherm models: Langmuir, Freundlich, and Temkin. The Freundlich model provided the best fit for mercury adsorption, whereas the Langmuir model accurately described lead ion adsorption behavior. Thermodynamic functions (∆G°, ∆H°, and ∆S°) were calculated to elucidate the nature of the adsorption processes. Additionally, metal ion desorption and recovery were assessed using HCl at varying concentrations. Optimal recovery was achieved for 60 min using 0.5 and 2.0 M for Pb2+ and Hg2+, respectively.

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