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Abstract <p>Powders containing birch-derived activated carbon (BAC) and iron oxide (Fe<sub><i>x</i></sub>O<sub><i>y</i></sub>) with various component ratios (80/20 and 20/80 wt %) were synthesized by chemical coprecipitation of iron salts in the presence of NH<sub>4</sub>OH. Laser diffraction, scanning electron microscopy (SEM), low-temperature adsorption/desorption of nitrogen vapor, and X-ray diffraction were used to characterize the morphology, texture, and structure of the composites. The prepared powders were mesoporous materials. The adsorption properties of the acivated carbon, iron oxide, and iron-containing composites toward the tetracycline drug were studied. The antibiotic sorption efficiency increased in the order Fe<sub><i>x</i></sub>O<sub><i>y</i></sub> &lt; BAC &lt; BAC/Fe<sub><i>x</i></sub>O<sub><i>y</i></sub>-20/80 &lt; BAC/Fe<sub><i>x</i></sub>O<sub><i>y</i></sub>-80/20. The tetracycline adsorption kinetics on the powders under study was described by equations of pseudo-first and pseudo-second order reactions.</p>

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Adsorbent Based on Activated Carbon and Iron Oxide for the Recovery of Tetracycline from Liquids

  • 期刊论文

  • 发表日期：

    2025年2月1日

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  • O. V. Alekseeva,
  • D. N. Yashkova,
  • A. V. Noskov,
  • A. V. Agafonov,
  • N. N. Smirnov

摘要

Abstract

Powders containing birch-derived activated carbon (BAC) and iron oxide (FexOy) with various component ratios (80/20 and 20/80 wt %) were synthesized by chemical coprecipitation of iron salts in the presence of NH4OH. Laser diffraction, scanning electron microscopy (SEM), low-temperature adsorption/desorption of nitrogen vapor, and X-ray diffraction were used to characterize the morphology, texture, and structure of the composites. The prepared powders were mesoporous materials. The adsorption properties of the acivated carbon, iron oxide, and iron-containing composites toward the tetracycline drug were studied. The antibiotic sorption efficiency increased in the order FexOy < BAC < BAC/FexOy-20/80 < BAC/FexOy-80/20. The tetracycline adsorption kinetics on the powders under study was described by equations of pseudo-first and pseudo-second order reactions.