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<p>Biomass waste like a banana peel is an appropriate precursor for preparing activated carbon through chemical activation. Banana peel shows promise for commercial usage because of its efficiency and widespread availability. The prepared activated carbon derived from banana peel possesses high porosity and massive surface area making it an efficient adsorbent as well as electrode material. The adsorption of Ni(II) ions on banana peel has been demonstrated to be promising when certain conditions are satisfied, including initial concentration of Ni(II) ions, contact time, temperature, adsorbent dosage, and pH. It has been discovered that activated banana peels exhibit higher levels of heavy metal nickel adsorption than carbonized ones. The heavy metal nickel was significantly removed from the wastewater by the activated carbon derived from banana peels. The activated carbon prepared from banana peel also shows a capacitance performance due to its high porosity and surface area nature. The maximum adsorption capacity of Ni(II) ions over activated carbon was evaluated to be 41.53&#xa0;mg/g, and it shows good reproducibility. The specific capacitance of activated carbon derived from banana peel was evaluated to be 267 F/g at the current density of 1 A/g. The prepared activated carbon shows good cyclic stability with capacitance retention of 89.6% and coulombic efficiency of 96.8%. The results confirm that the prepared activated carbon proved to be a low-cost, potential bio-adsorbent for future use against various environmental pollutants and electrode material for energy storage applications.</p> Graphical abstract <p></p>

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Banana peel biomass–derived activated carbon for nickel ion removal and energy storage applications

  • 期刊论文

  • 发表日期：

    2025年3月4日

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  • Vinitha Packirisamy,
  • Rajabhuvaneswari Ariyamuthu,
  • Krithiga Thangavelu,
  • Vidhya Vathana Murugesan,
  • Jeevalatha Rugmangathan

摘要

Biomass waste like a banana peel is an appropriate precursor for preparing activated carbon through chemical activation. Banana peel shows promise for commercial usage because of its efficiency and widespread availability. The prepared activated carbon derived from banana peel possesses high porosity and massive surface area making it an efficient adsorbent as well as electrode material. The adsorption of Ni(II) ions on banana peel has been demonstrated to be promising when certain conditions are satisfied, including initial concentration of Ni(II) ions, contact time, temperature, adsorbent dosage, and pH. It has been discovered that activated banana peels exhibit higher levels of heavy metal nickel adsorption than carbonized ones. The heavy metal nickel was significantly removed from the wastewater by the activated carbon derived from banana peels. The activated carbon prepared from banana peel also shows a capacitance performance due to its high porosity and surface area nature. The maximum adsorption capacity of Ni(II) ions over activated carbon was evaluated to be 41.53 mg/g, and it shows good reproducibility. The specific capacitance of activated carbon derived from banana peel was evaluated to be 267 F/g at the current density of 1 A/g. The prepared activated carbon shows good cyclic stability with capacitance retention of 89.6% and coulombic efficiency of 96.8%. The results confirm that the prepared activated carbon proved to be a low-cost, potential bio-adsorbent for future use against various environmental pollutants and electrode material for energy storage applications.

Graphical abstract