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<p>This paper investigates the utilisation of cellulose nanocrystals (CNCs) derived from <i>Acacia Erioloba</i> (<i>A. erioloba</i>) seedpods for dye removal. These CNCs demonstrate higher dye adsorption efficiency compared to conventional adsorbents, while also offering cost-effective solutions for large-scale wastewater treatment applications. The study explores the effectiveness of CNCs in adsorbing methylene blue (MB) and methyl orange (MO), both commonly used in pharmaceutical industries with significant ecological impacts. The physical characterisation of the CNCs revealed a yield of 11.4%, a moisture content of 8.75%, a pH of 5.34, and a density of 1.03&#xa0;g/cm<sup>3</sup>. Scanning electron microscopy (SEM) analysis showed CNCs with a porous structure favourable for dye uptake, while Fourier-transform infrared (FTIR) spectroscopy indicated functional groups such as sulphate, CH<sub>2</sub>, and OH. Adsorption data for both dyes aligned well with the Freundlich isotherm, with higher regression correlation values (<i>R</i><sup>2</sup>) of 0.97 for MO and 0.84 for MB, indicating a moderate-to-good fit, particularly for MO. The adsorption capacity values (<i>K</i><sub>f</sub>) were 656.75&#xa0;mg/g for MO and 493.74&#xa0;mg/g for MB, highlighting the significant ability of the adsorbent materials to capture and retain substantial amounts of the respective dyes per unit mass. This research contributes to the expanding field of eco-friendly adsorbents for dye removal, demonstrating the potential of CNCs derived from <i>A. erioloba</i> seedpods as valuable resources for addressing contemporary environmental challenges.</p>

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Efficacy of cellulose-based nanocrystals derived from Acacia Erioloba seedpods for dye removal: potential and scalability challenges

  • 期刊论文

  • 发表日期：

    2025年10月11日

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  • Ateeq Rahman,
  • Viola-De-Amor C. P. Willemse,
  • Shiva Prashanth Kumar Kodicherla

摘要

This paper investigates the utilisation of cellulose nanocrystals (CNCs) derived from Acacia Erioloba (A. erioloba) seedpods for dye removal. These CNCs demonstrate higher dye adsorption efficiency compared to conventional adsorbents, while also offering cost-effective solutions for large-scale wastewater treatment applications. The study explores the effectiveness of CNCs in adsorbing methylene blue (MB) and methyl orange (MO), both commonly used in pharmaceutical industries with significant ecological impacts. The physical characterisation of the CNCs revealed a yield of 11.4%, a moisture content of 8.75%, a pH of 5.34, and a density of 1.03 g/cm3. Scanning electron microscopy (SEM) analysis showed CNCs with a porous structure favourable for dye uptake, while Fourier-transform infrared (FTIR) spectroscopy indicated functional groups such as sulphate, CH2, and OH. Adsorption data for both dyes aligned well with the Freundlich isotherm, with higher regression correlation values (R2) of 0.97 for MO and 0.84 for MB, indicating a moderate-to-good fit, particularly for MO. The adsorption capacity values (Kf) were 656.75 mg/g for MO and 493.74 mg/g for MB, highlighting the significant ability of the adsorbent materials to capture and retain substantial amounts of the respective dyes per unit mass. This research contributes to the expanding field of eco-friendly adsorbents for dye removal, demonstrating the potential of CNCs derived from A. erioloba seedpods as valuable resources for addressing contemporary environmental challenges.