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<p>Several studies report the effectiveness of hydroxyapatite (HAp) in removing contaminants from water, such as heavy metals, anions, and emerging pollutants. This study aimed to evaluate the application of natural HAp obtained from devil fish bones (Loricariidae family) and synthetic HAp prepared using a sol–gel precipitation method in the removal of lead from water. The adsorption kinetics of Pb<sup>2+</sup> on the materials were determined using an initial concentration of 200&#xa0;mg L<sup>−1</sup> of Pb<sup>2+</sup>, with 0.02&#xa0;g of adsorbent in 25&#xa0;mL of solution at pH 5 and 25&#xa0;°C. The results showed that HAp from devil fish bones had a maximum adsorption capacity of 235&#xa0;mg&#xa0;g<sup>−1</sup> by BHAp550, while Synthetic HAp reached 255&#xa0;mg&#xa0;g<sup>−1</sup>. In addition, it was observed that the physicochemical, textural, and structural properties of HAp influence its capacity to adsorb Pb<sup>2+</sup>, which can be attributed to chemisorption mechanisms such as ion exchange, complexation, and precipitation on the surface material.</p> Graphical abstract <p></p>

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Adsorbent materials based on biogenic and synthetic hydroxyapatite: Synthesis, characterization, and adsorption of lead from water

  • 期刊论文

  • 发表日期：

    2026年2月9日

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  • Hilda Guadalupe Cisneros-Ontiveros,
  • Alfredo Israel Flores-Rojas,
  • Nahum Andrés Medellín-Castillo,
  • Juan Carlos Moreno-Piraján,
  • Gladis Judith Labrada-Delgado,
  • Simon Yobanny Reyes-López,
  • Jonathan Michel Sánchez-Silva,
  • Sergio Armando Cruz-Briano

摘要

Several studies report the effectiveness of hydroxyapatite (HAp) in removing contaminants from water, such as heavy metals, anions, and emerging pollutants. This study aimed to evaluate the application of natural HAp obtained from devil fish bones (Loricariidae family) and synthetic HAp prepared using a sol–gel precipitation method in the removal of lead from water. The adsorption kinetics of Pb2+ on the materials were determined using an initial concentration of 200 mg L−1 of Pb2+, with 0.02 g of adsorbent in 25 mL of solution at pH 5 and 25 °C. The results showed that HAp from devil fish bones had a maximum adsorption capacity of 235 mg g−1 by BHAp550, while Synthetic HAp reached 255 mg g−1. In addition, it was observed that the physicochemical, textural, and structural properties of HAp influence its capacity to adsorb Pb2+, which can be attributed to chemisorption mechanisms such as ion exchange, complexation, and precipitation on the surface material.

Graphical abstract