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<p>This study introduces a hydrogenated FeCo-MOF derivative catalyst (HC-FeCo@C<sub>350</sub>) to activate peracetic acid (PAA) for efficient degradation dye wastewater. Rhodamine B (RhB) as a model pollutant, the HC-FeCo@C<sub>350</sub>/PAA achieved a 99.33% removal efficiency within 20 min, with a rate constant 18 times higher than the non-hydrogenated system. Liquid chromatography-mass spectrometry (LC-MS) and the toxicity evaluation software (T.E.S.T.) confirmed reduced intermediate toxicity. Quenching experiments, electron paramagnetic resonance (EPR) tests, and density functional theory (DFT) calculation show that HC-FeCo@C<sub>350</sub> can effectively activate PAA to produce <sup>1</sup>O<sub>2</sub>, CH<sub>3</sub>C(O)O•, and CH<sub>3</sub>C(O)OO•. The magnetically recoverable catalyst maintained over 80% efficiency after 4 cycles. In actual dye wastewater treatment, the <i>RE</i> of chemical oxygen demand (COD), ammonia nitrogen (NH<sub>3</sub>-N), total nitrogen (TN), total phosphorus (TP) could reach approximately 53.57%, 53.23%, 29.25%, 19.2%, respectively, with reduced toxicity validated by mungbean germination experiment. This technology offers a promising approach for refractory dye wastewater treatment and reuse.</p><p></p>

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Enhanced remediation of actual dye wastewater by hydrogenated bimetallic MOF derivative with active peracetic acid

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年5月12日

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  • Shengmei Tan,
  • Liuwei Zhang,
  • Zhiliang Cheng,
  • Yuxin Peng,
  • Jinshan Tang,
  • Hongrui Zhu,
  • Facheng Qiu

摘要

This study introduces a hydrogenated FeCo-MOF derivative catalyst (HC-FeCo@C350) to activate peracetic acid (PAA) for efficient degradation dye wastewater. Rhodamine B (RhB) as a model pollutant, the HC-FeCo@C350/PAA achieved a 99.33% removal efficiency within 20 min, with a rate constant 18 times higher than the non-hydrogenated system. Liquid chromatography-mass spectrometry (LC-MS) and the toxicity evaluation software (T.E.S.T.) confirmed reduced intermediate toxicity. Quenching experiments, electron paramagnetic resonance (EPR) tests, and density functional theory (DFT) calculation show that HC-FeCo@C350 can effectively activate PAA to produce 1O2, CH3C(O)O•, and CH3C(O)OO•. The magnetically recoverable catalyst maintained over 80% efficiency after 4 cycles. In actual dye wastewater treatment, the RE of chemical oxygen demand (COD), ammonia nitrogen (NH3-N), total nitrogen (TN), total phosphorus (TP) could reach approximately 53.57%, 53.23%, 29.25%, 19.2%, respectively, with reduced toxicity validated by mungbean germination experiment. This technology offers a promising approach for refractory dye wastewater treatment and reuse.