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<p>Hexavalent chromium [Cr(VI)] contamination poses a severe environmental and public health risk due to its high toxicity and carcinogenicity. Conventional Cr(VI) removal methods are often costly, energy-intensive, and generate hazardous secondary waste, necessitating the search for sustainable and cost-effective alternatives. This study investigates the potential of powdered <i>Ficus drupacea</i> leaves as a natural, eco-friendly biosorbent for Cr(VI) removal from aqueous solutions. Due to abundance and low cost, <i>Ficus drupacea</i> presents a promising alternative to conventional treatment methods. Key adsorption parameters, including pH, contact time, Cr(VI) concentration, temperature, biosorbent dosage, etc. were systematically analyzed to optimize removal efficiency. Characterization techniques such as Fourier-transform infrared (FTIR) spectroscopy, energy-dispersive X-ray (EDX) analysis, and scanning electron microscopy (SEM) confirmed the biosorbent’s structural and chemical suitability. Adsorption equilibrium was assessed using two-variable isotherm models, and kinetic studies indicated that the pseudo-second-order model best described the process. Desorption studies using NaOH and HCl identified HCl as the most effective eluent for Cr(VI) recovery. The biosorbent was successfully regenerated for up to three cycles while retaining significant removal efficiency. These findings highlight <i>Ficus drupacea</i> leaves as a viable, sustainable, and cost-effective solution for Cr(VI) remediation in wastewater treatment.</p>

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Biosorption Potential of Ficus drupacea Leaves as a Novel Low-Cost Adsorbent for Hexavalent Chromium

  • 期刊论文

  • 发表日期：

    2025年8月8日

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  • Palak Kansal,
  • Abha Shukla,
  • Rishi Kumar Shukla

摘要

Hexavalent chromium [Cr(VI)] contamination poses a severe environmental and public health risk due to its high toxicity and carcinogenicity. Conventional Cr(VI) removal methods are often costly, energy-intensive, and generate hazardous secondary waste, necessitating the search for sustainable and cost-effective alternatives. This study investigates the potential of powdered Ficus drupacea leaves as a natural, eco-friendly biosorbent for Cr(VI) removal from aqueous solutions. Due to abundance and low cost, Ficus drupacea presents a promising alternative to conventional treatment methods. Key adsorption parameters, including pH, contact time, Cr(VI) concentration, temperature, biosorbent dosage, etc. were systematically analyzed to optimize removal efficiency. Characterization techniques such as Fourier-transform infrared (FTIR) spectroscopy, energy-dispersive X-ray (EDX) analysis, and scanning electron microscopy (SEM) confirmed the biosorbent’s structural and chemical suitability. Adsorption equilibrium was assessed using two-variable isotherm models, and kinetic studies indicated that the pseudo-second-order model best described the process. Desorption studies using NaOH and HCl identified HCl as the most effective eluent for Cr(VI) recovery. The biosorbent was successfully regenerated for up to three cycles while retaining significant removal efficiency. These findings highlight Ficus drupacea leaves as a viable, sustainable, and cost-effective solution for Cr(VI) remediation in wastewater treatment.