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<p>With the advancement of globalization and the continuous growth of the global population, issues related to water resource scarcity and water pollution have become increasingly severe. Antibiotics, as a significant class of environmental pollutants, are extensively used in human medicine and animal husbandry. Consequently, substantial amounts of antibiotics are discharged into the environment, adversely affecting human health and ecosystems. Among these antibiotics, tetracycline (TC) ranks second in both usage and production volume. This study investigates the degradation of tetracycline using FeOCl-activated persulfate, examining the effects of various systems, PMS concentration, TC concentration, FeOCl dosage, initial pH value, and the presence of anions and inorganic substances on TC degradation efficiency. Response surface methodology was employed to analyze the combined influence of PMS concentration, FeOCl dosage, and initial pH on TC degradation. Under the optimized conditions (PMS concentration = 1 mM, FeOCl dosage = 0.286 g/L, and initial pH = 8), the predicted maximum TC degradation efficiency of the system reached 93.45%. Quenching experiments were conducted using i-PrOH, benzoquinone, methanol, and tert-butanol to investigate the primary active substances involved in the degradation of TC. The degradation pathway of TC treated with the FeOCl/PMS system was inferred through mass spectrometry analysis.</p>

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Efficient degradation of tetracycline in water via the FeOCl-activated persulfate process

  • 期刊论文

  • 发表日期：

    2026年1月3日

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  • Xinjun Shen,
  • Li Yao,
  • Xuhong Jin

摘要

With the advancement of globalization and the continuous growth of the global population, issues related to water resource scarcity and water pollution have become increasingly severe. Antibiotics, as a significant class of environmental pollutants, are extensively used in human medicine and animal husbandry. Consequently, substantial amounts of antibiotics are discharged into the environment, adversely affecting human health and ecosystems. Among these antibiotics, tetracycline (TC) ranks second in both usage and production volume. This study investigates the degradation of tetracycline using FeOCl-activated persulfate, examining the effects of various systems, PMS concentration, TC concentration, FeOCl dosage, initial pH value, and the presence of anions and inorganic substances on TC degradation efficiency. Response surface methodology was employed to analyze the combined influence of PMS concentration, FeOCl dosage, and initial pH on TC degradation. Under the optimized conditions (PMS concentration = 1 mM, FeOCl dosage = 0.286 g/L, and initial pH = 8), the predicted maximum TC degradation efficiency of the system reached 93.45%. Quenching experiments were conducted using i-PrOH, benzoquinone, methanol, and tert-butanol to investigate the primary active substances involved in the degradation of TC. The degradation pathway of TC treated with the FeOCl/PMS system was inferred through mass spectrometry analysis.