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Tailored deep eutectic solvent-mediated conversion of sugarcane bagasse to furfural and 5-hydroxymethylfurfural

Author

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  • Sunar, Shiva Lall
  • Bhattacharyya, Debraj
  • Panda, Tarun K.

Abstract

The valorization of lignocellulosic biomass (LCB) into high-value platform chemicals such as 5-hydroxymethylfurfural (5-HMF) and furfural presents a sustainable alternative to petroleum-based chemical production. This study focuses on the efficient conversion of sugarcane bagasse (SCB), an abundant agro-industrial byproduct, into 5-HMF and furfural using a novel, acidic deep eutectic solvent (DES) system composed of trifluoroacetic acid (TFA) and N,N,N′,N′-tetramethyl-N,N′-dipropylethane-1,2-diammonium bromide (TMDPEDABr). This DES serves dually as a Brønsted acid and solvent, facilitating the hydrolysis and dehydration of SCB under mild conditions. Process optimization using response surface methodology (RSM) revealed optimal yields of 17.6% for 5-HMF and 51.2% for furfural at 116.9 °C, 94.6 min, and 25.5%v/v TMDPEDABr/TFA-DES. Mass balance analysis demonstrated a high conversion efficiency, with over 94% hemicellulose removal and significant yields of targeted products. This study underscores the potential of unique DES-based systems as environmentally benign alternatives to traditional acid catalysts in biomass valorization, contributing to sustainable biorefinery.

Suggested Citation

  • Sunar, Shiva Lall & Bhattacharyya, Debraj & Panda, Tarun K., 2026. "Tailored deep eutectic solvent-mediated conversion of sugarcane bagasse to furfural and 5-hydroxymethylfurfural," Renewable Energy, Elsevier, vol. 256(PE).
    • Handle: RePEc:eee:renene:v:256:y:2026:i:pe:s0960148125019731
    DOI: 10.1016/j.renene.2025.124309
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