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<p>This study developed and evaluated novel cellulose nanofibers (CNFs) and cinnamon-modified CNFs (Cin@CNFs) derived from oil palm frond waste for the removal of ibuprofen (IBP) and paracetamol (PC) from aqueous solutions, addressing global water scarcity and pharmaceutical contamination. The developed materials were characterized using different techniques including SEM with EDX, FTIR, and BET analysis before and after adsorption process. The results showed the adsorption of IBP and PC onto CNFs is characteristic of fast rate, 5 and 15&#xa0;min, respectively. The maximum adsorption capacities of CNFs toward IBP and PC are 38.714 and 28.2&#xa0;mg/g, respectively, while cinnamon@CNFs recorded maximum adsorption capacities of 12.1 and 24.69&#xa0;mg/g toward IBP and PC, respectively. The kinetic modeling investigations for adsorption of IBP onto CNFs showed that the obtained experimental data are better fitted with the pseudo-first-order model, pseudo-second-order model, and mixed first and second model, while intraparticle diffusion is the best fit to describe adsorption of PC. Isotherm models were evaluated for modeling. Out of different models, Langmuir–Freundlich isotherm model is the best to describe IBP onto CNFs adsorption system; Baudu and Sips models are the best to describe PC onto CNFs adsorption system. For the adsorption of PC onto Cin@CNFs, Langmuir–Freundlich and Baudu models are the best. For IBP adsorption onto Cin@CNFs, Freundlich model can be used to describe this adsorption system. Both of CNFs and Cin@CNFs can be concluded to be a prominent and efficient adsorbent for IBP and PC&#xa0;contributing to sustainable water management.</p>

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Sustainable Cellulose Nanofibers for Management of Pharmaceutical Residues in Water

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年6月9日

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  • Mona Ebaid,
  • S. I. El-dek,
  • Nabila Shehata

摘要

This study developed and evaluated novel cellulose nanofibers (CNFs) and cinnamon-modified CNFs (Cin@CNFs) derived from oil palm frond waste for the removal of ibuprofen (IBP) and paracetamol (PC) from aqueous solutions, addressing global water scarcity and pharmaceutical contamination. The developed materials were characterized using different techniques including SEM with EDX, FTIR, and BET analysis before and after adsorption process. The results showed the adsorption of IBP and PC onto CNFs is characteristic of fast rate, 5 and 15 min, respectively. The maximum adsorption capacities of CNFs toward IBP and PC are 38.714 and 28.2 mg/g, respectively, while cinnamon@CNFs recorded maximum adsorption capacities of 12.1 and 24.69 mg/g toward IBP and PC, respectively. The kinetic modeling investigations for adsorption of IBP onto CNFs showed that the obtained experimental data are better fitted with the pseudo-first-order model, pseudo-second-order model, and mixed first and second model, while intraparticle diffusion is the best fit to describe adsorption of PC. Isotherm models were evaluated for modeling. Out of different models, Langmuir–Freundlich isotherm model is the best to describe IBP onto CNFs adsorption system; Baudu and Sips models are the best to describe PC onto CNFs adsorption system. For the adsorption of PC onto Cin@CNFs, Langmuir–Freundlich and Baudu models are the best. For IBP adsorption onto Cin@CNFs, Freundlich model can be used to describe this adsorption system. Both of CNFs and Cin@CNFs can be concluded to be a prominent and efficient adsorbent for IBP and PC contributing to sustainable water management.