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<p>The study aimed to assess the effectiveness of TiO₂/ZnO nanocomposite-modified biochar (TZB) derived from pristine biochar (TBC) precursor materials to sequester acetaminophen (APH) from the aqueous solution using the batch adsorption technique. The uptake of APH by TZB and TBC was examined at solution pH 7, 30&#xa0;mg adsorbent dose, and a 100-min contact time. The findings suggest a bimolecular interaction between the adsorbates and adsorbents, with pseudo-second-order kinetics. According to isotherm research, Langmuir and Freundlich models, respectively, best fit the data acquired for TZB and TBC. For both TBC and TZB, an increase in the Langmuir monolayer adsorption parameters was observed, suggesting better sorption of acetaminophen with increasing solution temperature. According to thermodynamic studies, both adsorbents spontaneously removed acetaminophen. Acetaminophen elimination by TBC and TZB was an endothermic procedure. This study validates the prospective use of TBC and TZB as potential capacity substitutes for treating pharmaceutical-polluted wastewater.</p>

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Adsorption capacity of nanocomposite synthesized using biochar sourced from Telfairia occidentalis stem and titanium oxide for the removal of acetaminophen

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年9月15日

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  • James Friday Amaku,
  • Okoche Kelvin Amadi,
  • Fanyana M. Mtunzi,
  • Jesse Greener

摘要

The study aimed to assess the effectiveness of TiO₂/ZnO nanocomposite-modified biochar (TZB) derived from pristine biochar (TBC) precursor materials to sequester acetaminophen (APH) from the aqueous solution using the batch adsorption technique. The uptake of APH by TZB and TBC was examined at solution pH 7, 30 mg adsorbent dose, and a 100-min contact time. The findings suggest a bimolecular interaction between the adsorbates and adsorbents, with pseudo-second-order kinetics. According to isotherm research, Langmuir and Freundlich models, respectively, best fit the data acquired for TZB and TBC. For both TBC and TZB, an increase in the Langmuir monolayer adsorption parameters was observed, suggesting better sorption of acetaminophen with increasing solution temperature. According to thermodynamic studies, both adsorbents spontaneously removed acetaminophen. Acetaminophen elimination by TBC and TZB was an endothermic procedure. This study validates the prospective use of TBC and TZB as potential capacity substitutes for treating pharmaceutical-polluted wastewater.