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<p>Tetracycline (TC) has been widely used in aquaculture to prevent bacterial diseases. While extensive research has been conducted on advanced oxidation processes (AOPs) to remove various contaminants from wastewater, the specific removal of TC in AOPs has yet to be widely reported. This research investigated the efficacy of synthesized magnetic activated carbon (MAC) nanocomposite for TC degradation in aqueous solutions. The degradation of TC in the presence of ultraviolet irradiation (UV-A, LED: 30 w) was examined utilizing the MAC catalyst produced by microwave-assisted as an efficient hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>) activator. To determine the structure of the MAC catalyst, different techniques, including X-ray powder diffraction (XRD), field emission scanning electron microscope (FESEM), and energy dispersive spectroscopy (EDS)—mapping and line scan—were employed. The degradation of TC was tested under various experimental conditions, including different catalyst dosages, pH values, oxidant and TC concentrations. Under optimal conditions, the maximum removal efficiency of TC reached 97.3% in synthetic wastewater. The parameters for this efficiency included a pH of 4, catalyst dosage of 1.2 g/L, an initial TC concentration of 5 µM, a reaction time of 75 min, and H<sub>2</sub>O<sub>2</sub> concentration of 3 mM, all facilitated by UV irradiation at a controlled ambient temperature of 25 °C. Our data approved the high stability and catalytic activity of MAC nanocomposite. This study also explored the reusability of MAC nanocomposite in synergistic processes such as UV-assisted Fenton reactions. The results indicate the potential for MAC nanocomposites to be effectively utilized in advanced wastewater treatment processes.</p>

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Synthesis and Efficacy of Magnetic Activated Carbon Nanocomposite as a Recyclable Catalyst for Degradation of Tetracycline

  • 期刊论文

  • 发表日期：

    2025年5月19日

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  • Seyedeh Nastaran Asadzadeh,
  • Ahmad Rajab Dizavandi,
  • Abozar Nasiri-Jahrodi,
  • Mostafa Gholamrezaei,
  • Nima Firouzeh,
  • Amir Amani

摘要

Tetracycline (TC) has been widely used in aquaculture to prevent bacterial diseases. While extensive research has been conducted on advanced oxidation processes (AOPs) to remove various contaminants from wastewater, the specific removal of TC in AOPs has yet to be widely reported. This research investigated the efficacy of synthesized magnetic activated carbon (MAC) nanocomposite for TC degradation in aqueous solutions. The degradation of TC in the presence of ultraviolet irradiation (UV-A, LED: 30 w) was examined utilizing the MAC catalyst produced by microwave-assisted as an efficient hydrogen peroxide (H2O2) activator. To determine the structure of the MAC catalyst, different techniques, including X-ray powder diffraction (XRD), field emission scanning electron microscope (FESEM), and energy dispersive spectroscopy (EDS)—mapping and line scan—were employed. The degradation of TC was tested under various experimental conditions, including different catalyst dosages, pH values, oxidant and TC concentrations. Under optimal conditions, the maximum removal efficiency of TC reached 97.3% in synthetic wastewater. The parameters for this efficiency included a pH of 4, catalyst dosage of 1.2 g/L, an initial TC concentration of 5 µM, a reaction time of 75 min, and H2O2 concentration of 3 mM, all facilitated by UV irradiation at a controlled ambient temperature of 25 °C. Our data approved the high stability and catalytic activity of MAC nanocomposite. This study also explored the reusability of MAC nanocomposite in synergistic processes such as UV-assisted Fenton reactions. The results indicate the potential for MAC nanocomposites to be effectively utilized in advanced wastewater treatment processes.