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<p>ATP–Fe<sub>3</sub>O<sub>4</sub>–APTES (AFAS), was synthesized by modifying magnetic attapulgite with 3-aminopropyltriethoxysilane to remove U(VI) and tetracycline (TC) from medical wastewater. In a single-component system, the maximum adsorption capacities of AFAS for U(VI) were 298.87&#xa0;mg/g and tetracycline were 111.71&#xa0;mg/g, respectively. Synergistic effect instead of competitive adsorption occurred between U(VI) and TC under the combined binary system, with the complexation interactions between the U(VI) and TC. U(VI) adsorption mechanisms on AFAS (e.g. precipitation, ion exchange and complexation) are different from the tetracycline (e.g. hydrogen bonding and π-π interactions). After five recycling cycles, AFAS maintained over 75% removal efficiency for both pollutants in the binary system.</p>

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Efficacy and mechanism of synchronized removal of uranium(VI) and tetracycline from medical wastewater by functionalized attapulgite

  • 期刊论文

  • 发表日期：

    2025年5月6日

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  • Xiangxiang Ma,
  • Shuibo Xie,
  • Nijing Shi

摘要

ATP–Fe3O4–APTES (AFAS), was synthesized by modifying magnetic attapulgite with 3-aminopropyltriethoxysilane to remove U(VI) and tetracycline (TC) from medical wastewater. In a single-component system, the maximum adsorption capacities of AFAS for U(VI) were 298.87 mg/g and tetracycline were 111.71 mg/g, respectively. Synergistic effect instead of competitive adsorption occurred between U(VI) and TC under the combined binary system, with the complexation interactions between the U(VI) and TC. U(VI) adsorption mechanisms on AFAS (e.g. precipitation, ion exchange and complexation) are different from the tetracycline (e.g. hydrogen bonding and π-π interactions). After five recycling cycles, AFAS maintained over 75% removal efficiency for both pollutants in the binary system.