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<p>The main theme of the present study is to develop a sustainable and green method for effectively removing harmful copper contents from wastewater by employing sodium alginate capped with silver. Physical and chemical characterization of Sodium alginate-capped Ag Nanocomposites (SA/Ag NCs) was performed by Scanning Electron Microscopy (SEM), X-ray diffraction (XRD), Thermogravimetric analysis (TGA) and Fourier Transform Infrared Spectroscopy (FTIR) for surface morphology, structure of composites, thermal stability and functional groups analysis respectively. These compounds effectively purify water from heavy metals like copper. The batch adsorption experiments optimize time, pH, and concentration, among other factors. The proportion of Cu that adsorbs to SA/Ag NCs under ideal experimental conditions (solution pH of 8, contact duration of 120&#xa0;min, solution temperature of 45&#xa0;°C, starting metal concentrations of 60 mg L<sup>− 1</sup>, and dose of absorbent) is found to be 99%. The best fit Langmuir isotherm, regarding both R<sup>2</sup> value and adsorption capacity to the experimental data, reveals a single layer adsorption phenomenon. Upon examining the kinetic characteristics, it was found that pseudo-second order was suitable, consistent with the metal-adsorbent interaction serving as the study’s rate-controlling element. The thermodynamic factors indicate that this was a spontaneous sorption reaction. The adsorption mode was chemisorption, as evidenced by Isothermal modeling and surface functional groups of the adsorbent. XRD indicates that the NPs are face-centered cubic (FCC). The results of this work suggest that Cu (II) can be effectively removed from wastewater. The food and chemical sectors could find numerous uses for the recently produced SA/Ag NCs.</p>

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Facile Removal of Cu (II) from Wastewater by Sodium Alginate-Capped Ag Nanocomposites

  • 期刊论文

  • 发表日期：

    2025年8月8日

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  • Mahnoor Malik,
  • Fozia Batool,
  • Maryam Basharat,
  • Muhammad Ehsan Ameer,
  • Sobia Noreen,
  • Rahman Qadir

摘要

The main theme of the present study is to develop a sustainable and green method for effectively removing harmful copper contents from wastewater by employing sodium alginate capped with silver. Physical and chemical characterization of Sodium alginate-capped Ag Nanocomposites (SA/Ag NCs) was performed by Scanning Electron Microscopy (SEM), X-ray diffraction (XRD), Thermogravimetric analysis (TGA) and Fourier Transform Infrared Spectroscopy (FTIR) for surface morphology, structure of composites, thermal stability and functional groups analysis respectively. These compounds effectively purify water from heavy metals like copper. The batch adsorption experiments optimize time, pH, and concentration, among other factors. The proportion of Cu that adsorbs to SA/Ag NCs under ideal experimental conditions (solution pH of 8, contact duration of 120 min, solution temperature of 45 °C, starting metal concentrations of 60 mg L− 1, and dose of absorbent) is found to be 99%. The best fit Langmuir isotherm, regarding both R2 value and adsorption capacity to the experimental data, reveals a single layer adsorption phenomenon. Upon examining the kinetic characteristics, it was found that pseudo-second order was suitable, consistent with the metal-adsorbent interaction serving as the study’s rate-controlling element. The thermodynamic factors indicate that this was a spontaneous sorption reaction. The adsorption mode was chemisorption, as evidenced by Isothermal modeling and surface functional groups of the adsorbent. XRD indicates that the NPs are face-centered cubic (FCC). The results of this work suggest that Cu (II) can be effectively removed from wastewater. The food and chemical sectors could find numerous uses for the recently produced SA/Ag NCs.