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Enhanced biomass processing towards acetone-butanol-ethanol fermentation using a ternary deep eutectic solvent

Author

Listed:
  • Poy, Helena
  • da Costa Lopes, André M.
  • Lladosa, Estela
  • Gabaldón, Carmen
  • Loras, Sonia
  • Silvestre, Armando J.D.

Abstract

This work evaluated the effectiveness of ternary deep eutectic solvents (DES) composed of cholinium chloride (ChCl), lactic acid (LA) and a diol (ethylene glycol – EG, or 1,6-hexanediol – HEX) in the pretreatment of rice straw (RS) towards the production of biobutanol. The most promising results were obtained with ChCl:LA:EG 1:5:5 at 120 °C for 4 h, which enabled the highest conversion of biomass polysaccharides into glucose and xylose up to 89.3 % and 53.6 % yields, respectively. Subsequently, the produced sugars were efficiently converted into biobutanol through the acetone-butanol-ethanol (ABE) fermentation process, resulting in the production of 95.7 g butanol/kg RS as one of the highest values reported in literature. Thus, the application of the ternary DES ChCl:LA:EG 1:5:5 represents a competitive and environmentally friendly pathway for RS valorization in comparison to conventional processes.

Suggested Citation

  • Poy, Helena & da Costa Lopes, André M. & Lladosa, Estela & Gabaldón, Carmen & Loras, Sonia & Silvestre, Armando J.D., 2023. "Enhanced biomass processing towards acetone-butanol-ethanol fermentation using a ternary deep eutectic solvent," Renewable Energy, Elsevier, vol. 219(P2).
    • Handle: RePEc:eee:renene:v:219:y:2023:i:p2:s0960148123014039
    DOI: 10.1016/j.renene.2023.119488
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    References listed on IDEAS

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    1. Ouyang, Denghao & Chen, Hongmei & Liu, Nan & Zhang, Jingzhi & Zhao, Xuebing, 2022. "Insight into the negative effects of lignin on enzymatic hydrolysis of cellulose for biofuel production via selective oxidative delignification and inhibitive actions of phenolic model compounds," Renewable Energy, Elsevier, vol. 185(C), pages 196-207.
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    4. Yang, Luan & Zheng, Tianran & Huang, Chen & Yao, Jianfeng, 2022. "Using deep eutectic solvent pretreatment for enhanced enzymatic saccharification and lignin utilization of masson pine," Renewable Energy, Elsevier, vol. 195(C), pages 681-687.
    5. Xie, Junxian & Cheng, Zheng & Zhu, Shiyun & Xu, Jun, 2022. "Lewis base enhanced neutral deep eutectic solvent pretreatment for enzymatic hydrolysis of corn straw and lignin characterization," Renewable Energy, Elsevier, vol. 188(C), pages 320-328.
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