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Fractionation of sugarcane bagasse with a p-toluene sulfonic acid pretreatment to co-produce glucose, furfural, and lignin-based cream

Author

Listed:
  • Wang, Baoxian
  • Li, Saiying
  • Wang, Zhiwei
  • Zhou, Zhenyu
  • Li, Lizi
  • Wu, Shufang
  • Wei, Weiqi

Abstract

Developing an efficient and feasible pretreatment is vital for biomass refining. Herein, a kind of p-toluene sulfonic acid (p-TsOH) pretreatment under mild conditions was proposed to convert the sugarcane bagasse (SCB) into glucose, furfural, and activated lignin. After the pretreatment, the cellulose-rich solid was digested by cellulase, and the glucose yield was up to 94.8 %. The pretreated liquid was diluted with deionized water to precipitate the lignin. Notably, the hemicelluloses degradation products in the supernatant, primarily xylose, can be directly converted into furfural without needing a catalyst, achieving a yield of 73.1 %. The recovered lignin exhibits excellent antioxidant properties, with a radical scavenging index (RSI) of 40.0 and significant UV absorbance, which displayed great potential in lignin-based sunscreen preparation. This study, therefore, presents a comprehensive strategy for the valorization of SCB, enhancing its potential for sustainable applications.

Suggested Citation

  • Wang, Baoxian & Li, Saiying & Wang, Zhiwei & Zhou, Zhenyu & Li, Lizi & Wu, Shufang & Wei, Weiqi, 2026. "Fractionation of sugarcane bagasse with a p-toluene sulfonic acid pretreatment to co-produce glucose, furfural, and lignin-based cream," Renewable Energy, Elsevier, vol. 259(C).
    • Handle: RePEc:eee:renene:v:259:y:2026:i:c:s0960148125027648
    DOI: 10.1016/j.renene.2025.125100
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