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<p>Sugarcane leaves, a major field residue in sugar production, often contribute to air pollution when burned. This study presents a clean thermochemical pathway for converting these residues, blended with waste polypropylene, into value-added biochars. This study investigated the thermochemical co-conversion of sugarcane leaves with polypropylene (PP) and biaxially oriented polypropylene (BOPP) at 350&#xa0;℃ using top-lit updraft gasification. Material characterization showed that PP incorporation enhanced BET specific area by 79% (from 144.5 to 258.8&#xa0;m<sup>2</sup>/g) while creating hierarchical pore architectures with average diameters of 1.793&#xa0;nm. XRD analysis demonstrated progressive graphitization with interlayer spacing expansion from 3.700 to 3.800&#xa0;Å, indicating successful structural modification. The co-carbonization process increased carbon content to 63.70% while introducing elements (aluminium, iron) through metallized film degradation. FTIR spectroscopy confirmed enhanced aromatic character with reduced oxygen-containing functional groups, resulting in improved hydrophobic properties. The engineered materials exhibited superior pore development and elemental diversity compared to single-component biochars. These findings establish co-carbonization as an effective waste-to-resource strategy for producing designer carbon materials with optimized functionality.</p>

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Valorization of Sugarcane Leaf Residues through Co-carbonization with Polypropylene Waste for Engineered Carbon Materials

  • 期刊论文

  • 发表日期：

    2026年3月24日

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  • Ghadah M. Al-Senani,
  • Kingsley O. Iwuozor,
  • Salhah D. Al-Qahtani,
  • Ebuka Chizitere Emenike,
  • Abel U. Egbemhenghe,
  • Adewale George Adeniyi

摘要

Sugarcane leaves, a major field residue in sugar production, often contribute to air pollution when burned. This study presents a clean thermochemical pathway for converting these residues, blended with waste polypropylene, into value-added biochars. This study investigated the thermochemical co-conversion of sugarcane leaves with polypropylene (PP) and biaxially oriented polypropylene (BOPP) at 350 ℃ using top-lit updraft gasification. Material characterization showed that PP incorporation enhanced BET specific area by 79% (from 144.5 to 258.8 m2/g) while creating hierarchical pore architectures with average diameters of 1.793 nm. XRD analysis demonstrated progressive graphitization with interlayer spacing expansion from 3.700 to 3.800 Å, indicating successful structural modification. The co-carbonization process increased carbon content to 63.70% while introducing elements (aluminium, iron) through metallized film degradation. FTIR spectroscopy confirmed enhanced aromatic character with reduced oxygen-containing functional groups, resulting in improved hydrophobic properties. The engineered materials exhibited superior pore development and elemental diversity compared to single-component biochars. These findings establish co-carbonization as an effective waste-to-resource strategy for producing designer carbon materials with optimized functionality.