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<p>In this study, bovine bone char (CHR) obtained from slaughterhouse waste was synthesized for use in the adsorption of fluoride and arsenic from water, and its textural and physicochemical properties were determined. The use of these materials provides an additional alternative for the use of bones and contributes to sustainability, promotes the circular economy, and improves biomass recovery. The bone chars were synthesized in a top-lit upflow (TLUD) gasifier at 853&#xa0;K for 1.5&#xa0;h. The CHR had a specific area of 114 m<sup>2</sup>&#xa0;g⁻<sup>1</sup> and showed surface groups such as CO₃<sup>2</sup>⁻, PO₄<sup>3</sup>⁻, and OH<sup>−</sup>, indicating the presence of hydroxyapatite. The maximum adsorption capacities of CHR were obtained at pH&#xa0;=&#xa0;5.0, reaching adsorption capacities of 24.5&#xa0;mg&#xa0;g⁻<sup>1</sup> and 32&#xa0;µg&#xa0;g⁻<sup>1</sup> for fluoride and arsenic, respectively. These results highlight the potential of CHR as a promising adsorbent for the removal of fluoride and arsenic from aqueous solutions.</p> Graphical abstract <p></p>

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Evaluation of the use of bovine bone char in the adsorption of fluoride and arsenic in water

  • 期刊论文

  • 发表日期：

    2025年11月26日

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  • Sergio Armando Cruz-Briano,
  • Nahum Andrés Medellín-Castillo,
  • Matthieu Carrière,
  • Alfredo Israel Flores-Rojas,
  • Hilda Guadalupe Cisneros-Ontiveros,
  • Jaime Reyes-Hernández

摘要

In this study, bovine bone char (CHR) obtained from slaughterhouse waste was synthesized for use in the adsorption of fluoride and arsenic from water, and its textural and physicochemical properties were determined. The use of these materials provides an additional alternative for the use of bones and contributes to sustainability, promotes the circular economy, and improves biomass recovery. The bone chars were synthesized in a top-lit upflow (TLUD) gasifier at 853 K for 1.5 h. The CHR had a specific area of 114 m2 g⁻1 and showed surface groups such as CO₃2⁻, PO₄3⁻, and OH−, indicating the presence of hydroxyapatite. The maximum adsorption capacities of CHR were obtained at pH = 5.0, reaching adsorption capacities of 24.5 mg g⁻1 and 32 µg g⁻1 for fluoride and arsenic, respectively. These results highlight the potential of CHR as a promising adsorbent for the removal of fluoride and arsenic from aqueous solutions.

Graphical abstract