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<p>The development of effective, sustainable adsorbents is still one of the key priorities in wastewater treatment due to increasing concerns over heavy metal contaminations. Conventional adsorbents often exhibit low adsorption efficiency due to badly defined pore structures. This study addresses these Limitations by engineering the pore structure of agro-based composite adsorbents to enhance heavy metal uptake. Langmuir isotherm modeling Further revealed that the optimized adsorbent showed maximum adsorption capacities of 97.8&#xa0;mg/g for Cu(II) And 96.2&#xa0;mg/g for Ni(II). BET surface area Analysis confirmed that the specific surface area increased up to 245&#xa0;m<sup>2</sup>/g, And BJH pore distribution indicated mesopores in the 2–20&#xa0;nm range, which were optimized for the transport And adsorption of metal ions in process. The kinetics of the adsorption followed a pseudo-second-order model, with rate constants of 0.045&#xa0;g/mg•min for Cu(II) And 0.041&#xa0;g/mg•min for Ni(II), so that Chemisorption was the prevalent mechanism. Surface charge Analysis determined that pHpzc ≈ 6.5, and electrostatic interactions favored the usual pH conditions of wastewater. SEM data from previously published, reputable studies were referenced to confirm the well-defined mesoporous structure of similar adsorbents, ensuring structural stability during repeated cycles of adsorption and desorption. This will bridge fundamental characterization of adsorption with practical wastewater treatment applications. This novel solution is scalable, efficient, and can be applied for heavy metal removal process.</p> Graphical abstract <p></p>

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Tailoring the pore structure of mesoporous composite agro-based adsorbents for the enhanced removal of Cu(II) and Ni(II) heavy metal ions from wastewater

  • 期刊论文

  • 发表日期：

    2025年9月7日

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  • Rajesh M. Bhagat,
  • Shantanu R. Khandeshwar,
  • Amit B. Ranit,
  • Mangesh P. Bhorkar,
  • Bhupesh P. Nandurkar,
  • Sagar Shelare,
  • Shubham Sharma,
  • N. Beemkumar,
  • S. Hemalatha,
  • Parveen Kumar,
  • Ankit Kedia,
  • Ehab El Sayed Massoud

摘要

The development of effective, sustainable adsorbents is still one of the key priorities in wastewater treatment due to increasing concerns over heavy metal contaminations. Conventional adsorbents often exhibit low adsorption efficiency due to badly defined pore structures. This study addresses these Limitations by engineering the pore structure of agro-based composite adsorbents to enhance heavy metal uptake. Langmuir isotherm modeling Further revealed that the optimized adsorbent showed maximum adsorption capacities of 97.8 mg/g for Cu(II) And 96.2 mg/g for Ni(II). BET surface area Analysis confirmed that the specific surface area increased up to 245 m2/g, And BJH pore distribution indicated mesopores in the 2–20 nm range, which were optimized for the transport And adsorption of metal ions in process. The kinetics of the adsorption followed a pseudo-second-order model, with rate constants of 0.045 g/mg•min for Cu(II) And 0.041 g/mg•min for Ni(II), so that Chemisorption was the prevalent mechanism. Surface charge Analysis determined that pHpzc ≈ 6.5, and electrostatic interactions favored the usual pH conditions of wastewater. SEM data from previously published, reputable studies were referenced to confirm the well-defined mesoporous structure of similar adsorbents, ensuring structural stability during repeated cycles of adsorption and desorption. This will bridge fundamental characterization of adsorption with practical wastewater treatment applications. This novel solution is scalable, efficient, and can be applied for heavy metal removal process.

Graphical abstract