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<p>Residues of Tetracycline hydrochloride (TCH) in water can cause monumental damage to the environment and human health. Accumulating and landfilling decarbonized coal gasification fine slag (DGFS) leads to the waste of resources and environmental pollution. Based on the principle of Treating Waste with Waste, a Fenton-like catalyst (DAPC) for the catalytic degradation of TCH in water was prepared using DGFS as raw material by one-step acid leaching. The composition, micromorphology and surface functional groups of DGFS and DAPC were analyzed, and the catalytic degradation effect and cycling performance of DAPC catalyst on TCH were investigated. The results showed that the specific surface area of DAPC is 191.20 m<sup>2</sup>/g, which is nearly 40 times higher than that of before acid leaching. The presence of abundant polar functional groups, such as hydroxy and siloxy, on the surface of the catalyst provides active sites that facilitate the adhesion of TCH to the DAPC catalyst surface.. The degradation efficiency of TCH was 88.30% after 3&#xa0;h under the optimal conditions (DAPC: 5&#xa0;g/L, H<sub>2</sub>O<sub>2</sub>: 2&#xa0;mL) and 83.68% of the initial value after four cycles, demonstrating excellent catalytic and cycling performance. Using DGFS as the raw material for a Fenton-like catalyst can reduce production costs, enhance catalyst activity and prevent iron sludge pollution. This study presents a new approach to treating TCH pollutants and utilising DGFS effectively. In the future, we can modify the surface of DAPC to improve its catalytic efficiency and explore its general applicability by using it to degrade other pollutants in water.</p>

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Fenton-like Catalytic Degradation of Tetracycline Hydrochloride Using a Catalyst Derived from Decarbonized Coal Gasification Fine Slag

  • 期刊论文

  • 发表日期：

    2025年12月18日

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  • Song Wang,
  • Wenjun Zhang,
  • Zhihao Liu,
  • Feng Wu,
  • Qiang Li

摘要

Residues of Tetracycline hydrochloride (TCH) in water can cause monumental damage to the environment and human health. Accumulating and landfilling decarbonized coal gasification fine slag (DGFS) leads to the waste of resources and environmental pollution. Based on the principle of Treating Waste with Waste, a Fenton-like catalyst (DAPC) for the catalytic degradation of TCH in water was prepared using DGFS as raw material by one-step acid leaching. The composition, micromorphology and surface functional groups of DGFS and DAPC were analyzed, and the catalytic degradation effect and cycling performance of DAPC catalyst on TCH were investigated. The results showed that the specific surface area of DAPC is 191.20 m2/g, which is nearly 40 times higher than that of before acid leaching. The presence of abundant polar functional groups, such as hydroxy and siloxy, on the surface of the catalyst provides active sites that facilitate the adhesion of TCH to the DAPC catalyst surface.. The degradation efficiency of TCH was 88.30% after 3 h under the optimal conditions (DAPC: 5 g/L, H2O2: 2 mL) and 83.68% of the initial value after four cycles, demonstrating excellent catalytic and cycling performance. Using DGFS as the raw material for a Fenton-like catalyst can reduce production costs, enhance catalyst activity and prevent iron sludge pollution. This study presents a new approach to treating TCH pollutants and utilising DGFS effectively. In the future, we can modify the surface of DAPC to improve its catalytic efficiency and explore its general applicability by using it to degrade other pollutants in water.