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<p>Paracetamol (PC) removal from water was experimentally investigated by combining photocatalysis with a peroxydisulfate (PDS) under UV-A irradiation at ambient temperature. TiO<sub>2</sub>-PC500 immobilized on cellulosic paper (TiO<sub>2</sub>-PC500-CelulPap), prepared via the sol–gel method, was characterized. The characterization results demonstrated that the properties of TiO<sub>2</sub>-PC500 were maintained unmodified after immobilization on cellulosic paper. Increasing the PDS concentration from 2 to 10&#xa0;mM enhanced PC removal from 42 to 60% after 120&#xa0;min of reaction time, attributed to an increase of the reactive oxygen species formed, such as S<sub>2</sub>O<sub>8</sub><sup>·−</sup>, ·OH and O<sub>2</sub><sup>·−</sup>. The highest degradation efficiency of PC was obtained at neutral&#xa0;pH (pH = 7). As the initial PC concentration increased from 0.039 to 0.198&#xa0;mM, the degradation efficiency of PC decreased 39% after 120&#xa0;min of reaction times. Based on modelling part, the optimal conditions were: 5.7 ≤ pH ≤ 9, 3.362&#xa0;mM ≤ [PDS] ≤ 10&#xa0;mM, [PC] = 0.062&#xa0;mM, and irradiation = 4.78&#xa0;h, resulting in 98% PC degradation yield.</p>

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Degradation of paracetamol by TiO2-PC500 immobilized cellulosic paper coupling with peroxydisulfate under UV irradiation

  • 期刊论文

  • 发表日期：

    2025年4月30日

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  • Anissa Hamiche,
  • Idris Yahiaoui,
  • Aymen Amine Assadi,
  • Moutaz Aldrdery,
  • Lotfi Khezami,
  • Jari S. Algethami,
  • Amar Manseri,
  • Walid Elfalleh,
  • Abdeltif Amrane,
  • Farida Aissani-Benissad

摘要

Paracetamol (PC) removal from water was experimentally investigated by combining photocatalysis with a peroxydisulfate (PDS) under UV-A irradiation at ambient temperature. TiO2-PC500 immobilized on cellulosic paper (TiO2-PC500-CelulPap), prepared via the sol–gel method, was characterized. The characterization results demonstrated that the properties of TiO2-PC500 were maintained unmodified after immobilization on cellulosic paper. Increasing the PDS concentration from 2 to 10 mM enhanced PC removal from 42 to 60% after 120 min of reaction time, attributed to an increase of the reactive oxygen species formed, such as S2O8·−, ·OH and O2·−. The highest degradation efficiency of PC was obtained at neutral pH (pH = 7). As the initial PC concentration increased from 0.039 to 0.198 mM, the degradation efficiency of PC decreased 39% after 120 min of reaction times. Based on modelling part, the optimal conditions were: 5.7 ≤ pH ≤ 9, 3.362 mM ≤ [PDS] ≤ 10 mM, [PC] = 0.062 mM, and irradiation = 4.78 h, resulting in 98% PC degradation yield.