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<p>Lignocellulosic residues derived from forest and agricultural systems represent an abundant and underutilised biomass stream with potential applications in water treatment. In this study, a comparative screening of selected lignocellulosic materials (oak sawdust, glans peduncles, barley straw, camelina straw, and flax/hemp dust) was performed for the removal of bisphenol A (BPA) from aqueous solutions, with activated carbon used as a reference. All investigated materials exhibited rapid adsorption, with equilibrium uptake of 90–95% achieved within 3 min and equilibrium approached within ~ 30 min under the studied conditions. Adsorption kinetics were well described by the pseudo-second-order model (R² = 0.996–0.999), although this is interpreted as a descriptive fit rather than direct evidence of chemisorption. Oak sawdust and glans peduncles showed the most stable performance across the tested pH range (3–11). The study has a screening character and was conducted at elevated BPA concentrations (20–500&#xa0;mg/L) to enable kinetic analysis. Therefore, the results provide a comparative and mechanistic basis for further investigation rather than direct evidence of environmental or industrial applicability. The pHpzc analysis suggests that sorption is not controlled solely by electrostatic interactions; instead, specific interactions related to lignin-rich domains—such as π–π interactions, hydrogen bonding, and hydrophobic effects—play a substantial role. The results highlight the importance of structural and chemical characteristics of woody biomass in determining functional performance under aqueous exposure and emphasise the potential of oak-derived residues as stable, sustainable materials contributing to the valorisation of forest resources.</p>

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Functional valorisation of forest derived lignocellulosic waste with high sorption rate and pH stability

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年5月5日

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  • Anna Przybylska-Balcerek,
  • Przemysław Bartczak,
  • Joanna Zembrzuska,
  • Adam Piasecki,
  • Jakub Frankowski,
  • Kinga Stuper-Szablewska

摘要

Lignocellulosic residues derived from forest and agricultural systems represent an abundant and underutilised biomass stream with potential applications in water treatment. In this study, a comparative screening of selected lignocellulosic materials (oak sawdust, glans peduncles, barley straw, camelina straw, and flax/hemp dust) was performed for the removal of bisphenol A (BPA) from aqueous solutions, with activated carbon used as a reference. All investigated materials exhibited rapid adsorption, with equilibrium uptake of 90–95% achieved within 3 min and equilibrium approached within ~ 30 min under the studied conditions. Adsorption kinetics were well described by the pseudo-second-order model (R² = 0.996–0.999), although this is interpreted as a descriptive fit rather than direct evidence of chemisorption. Oak sawdust and glans peduncles showed the most stable performance across the tested pH range (3–11). The study has a screening character and was conducted at elevated BPA concentrations (20–500 mg/L) to enable kinetic analysis. Therefore, the results provide a comparative and mechanistic basis for further investigation rather than direct evidence of environmental or industrial applicability. The pHpzc analysis suggests that sorption is not controlled solely by electrostatic interactions; instead, specific interactions related to lignin-rich domains—such as π–π interactions, hydrogen bonding, and hydrophobic effects—play a substantial role. The results highlight the importance of structural and chemical characteristics of woody biomass in determining functional performance under aqueous exposure and emphasise the potential of oak-derived residues as stable, sustainable materials contributing to the valorisation of forest resources.