Scholarlink

<p>Immersion microcalorimetry is a valuable technique for characterizing the surface properties and interaction potentials of porous materials. In this study, bone chars (BC) were synthesized under varying pyrolysis conditions to evaluate their physicochemical properties and their interaction with glyphosate (PMG), an emerging contaminant of global concern. Five pyrolysis parameters were explored, revealing that temperature and atmosphere significantly influence the composition, surface chemistry, and microstructure of BC, while the heating rate showed minimal effect. Characterization techniques such as FT-IR, elemental analysis, N2 physisorption, Boehm titration, and pHPZC determination provided a comprehensive understanding of the surface functionality and porosity of the BC samples. Notably, the role of nitrogen in BC surface chemistry was highlighted, with particle size and residence time influencing its incorporation. Microcalorimetric analysis revealed the hydrophilic nature of the chars, correlating with carbon content and pyrolysis conditions. Immersion calorimetry with aqueous glyphosate solution indicated significant interactions with the surface of BC, especially with the inorganic matrix (hydroxyapatite), underscoring the potential of bone chars for glyphosate removal from aqueous systems. This work advances the understanding of BC surface energetics and supports their development as effective adsorbents for water purification applications.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Studying the influence of bone char synthesis settings over its properties and its interaction with glyphosate: application of immersion calorimetry

  • 期刊论文

  • 发表日期：

    2026年5月29日

查看全文
  • Diego Felipe Hernández-Barreto,
  • Liliana Giraldo,
  • Juan Carlos Moreno-Piraján

摘要

Immersion microcalorimetry is a valuable technique for characterizing the surface properties and interaction potentials of porous materials. In this study, bone chars (BC) were synthesized under varying pyrolysis conditions to evaluate their physicochemical properties and their interaction with glyphosate (PMG), an emerging contaminant of global concern. Five pyrolysis parameters were explored, revealing that temperature and atmosphere significantly influence the composition, surface chemistry, and microstructure of BC, while the heating rate showed minimal effect. Characterization techniques such as FT-IR, elemental analysis, N2 physisorption, Boehm titration, and pHPZC determination provided a comprehensive understanding of the surface functionality and porosity of the BC samples. Notably, the role of nitrogen in BC surface chemistry was highlighted, with particle size and residence time influencing its incorporation. Microcalorimetric analysis revealed the hydrophilic nature of the chars, correlating with carbon content and pyrolysis conditions. Immersion calorimetry with aqueous glyphosate solution indicated significant interactions with the surface of BC, especially with the inorganic matrix (hydroxyapatite), underscoring the potential of bone chars for glyphosate removal from aqueous systems. This work advances the understanding of BC surface energetics and supports their development as effective adsorbents for water purification applications.