Scholarlink

Abstract <p>Fe-impregnated natural clay adsorbents were prepared and used for H<sub>2</sub>S removal under fixed bed conditions. Structural and textural analyses of the raw and Fe-modified clays reveal successful impregnation of iron species onto the clay matrices, as evidenced by the identification of distinct crystalline phases and functional groups. The natural clays, characterized by moderate surface area and layered silicate structures, exhibited low adsorption capacities for raw clays NCR (0.140&#xa0;mg&#xa0;g<sup>−1</sup>) and NCS (0.163&#xa0;mg&#xa0;g<sup>−1</sup>). In contrast, the Fe-modified clays, with enhanced surface reactivity and the presence of iron oxides dispersed on their surfaces, showed significantly improved adsorption efficiencies, reaching 0.354&#xa0;mg&#xa0;g<sup>−1</sup>for Fe-modified NCR and 0.862&#xa0;mg&#xa0;g<sup>−1</sup> for Fe-modified NCS. Fixed bed Fe-modified clays physically and chemically adsorb H<sub>2</sub>S on their surface, providing high efficiency and easy operation. They are particularly suitable for very low outlet H<sub>2</sub>S concentrations.</p> Graphical Abstract <p></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

Sustainable Hydrogen Sulfide Removal Using Iron-Modified Natural Clays

  • 期刊论文

  • 发表日期：

    2025年10月28日

查看全文
  • A. Tamin,
  • S. Laasri,
  • A. Hajjaji,
  • A. Laghzizil,
  • J. M. Nunzi,
  • S. Touhtouh

摘要

Abstract

Fe-impregnated natural clay adsorbents were prepared and used for H2S removal under fixed bed conditions. Structural and textural analyses of the raw and Fe-modified clays reveal successful impregnation of iron species onto the clay matrices, as evidenced by the identification of distinct crystalline phases and functional groups. The natural clays, characterized by moderate surface area and layered silicate structures, exhibited low adsorption capacities for raw clays NCR (0.140 mg g−1) and NCS (0.163 mg g−1). In contrast, the Fe-modified clays, with enhanced surface reactivity and the presence of iron oxides dispersed on their surfaces, showed significantly improved adsorption efficiencies, reaching 0.354 mg g−1for Fe-modified NCR and 0.862 mg g−1 for Fe-modified NCS. Fixed bed Fe-modified clays physically and chemically adsorb H2S on their surface, providing high efficiency and easy operation. They are particularly suitable for very low outlet H2S concentrations.

Graphical Abstract