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<p>In this work, nanocellulose has been extracted from rice husk and modified with zinc oxide to remove naphthalene and pyrene from the simulated wastewater. The sorption efficiency of ZnO@nanocellulose for naphthalene and pyrene was determined in batch mode experiments. ZnO@NC was characterized using FESEM, EDX, XRD, Zeta potential, and FTIR. Sorption behavior was investigated using isotherm and kinetic models. The maximum removal of both naphthalene and pyrene by ZnO@NC was 82 and 80% respectively at 2&#xa0;mg/L concentration, pH 2 with a 0.8&#xa0;g dose in 30&#xa0;min. Pseudo-second-order model explained the sorption behavior of Naphthalene and pyrene onto ZNO@NC. The Langmuir model is best fitted for naphthalene and pyrene adsorption with the data, with an adsorption capacity of 26.11 and 7.62 mg g<sup>− 1,</sup> respectively. The low value of the chi-square error analysis also confirmed that the PSO model will be fitted in the sorption process. Thermodynamic studies show that the sorption process was endothermic.</p>

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Comparative adsorption study of naphthalene and pyrene on modified nanocellulose with zinc oxide

  • 期刊论文

  • 发表日期：

    2025年12月1日

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  • Pooja Ranwala,
  • Jitender Pal

摘要

In this work, nanocellulose has been extracted from rice husk and modified with zinc oxide to remove naphthalene and pyrene from the simulated wastewater. The sorption efficiency of ZnO@nanocellulose for naphthalene and pyrene was determined in batch mode experiments. ZnO@NC was characterized using FESEM, EDX, XRD, Zeta potential, and FTIR. Sorption behavior was investigated using isotherm and kinetic models. The maximum removal of both naphthalene and pyrene by ZnO@NC was 82 and 80% respectively at 2 mg/L concentration, pH 2 with a 0.8 g dose in 30 min. Pseudo-second-order model explained the sorption behavior of Naphthalene and pyrene onto ZNO@NC. The Langmuir model is best fitted for naphthalene and pyrene adsorption with the data, with an adsorption capacity of 26.11 and 7.62 mg g− 1, respectively. The low value of the chi-square error analysis also confirmed that the PSO model will be fitted in the sorption process. Thermodynamic studies show that the sorption process was endothermic.