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Multi-scale study of the integrated use of the carbohydrate fractions of sugarcane bagasse for ethanol and xylitol production

Author

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  • Antunes, Felipe A.F.
  • Thomé, Lucas C.
  • Santos, Júlio C.
  • Ingle, Avinash P.
  • Costa, Cassiano B.
  • Anjos, Virgilio Dos
  • Bell, Maria J.V.
  • Rosa, Carlos A.
  • Silva, Silvio S.Da

Abstract

A multi-scale study of sugarcane bagasse (SB) pretreatments and integrated developments for use of its carbohydrates portions for ethanol and xylitol production, are presented. In a first approach, after SB acid hydrolysis, hemicellulosic ethanol production was investigated, verifying ethanol yield of 0.31 g/g and volumetric productivity (QP) of 0.1 g/L.h. Xylitol production was also studied, showing xylitol yield and QP of 0.61 g/g and 0.38 g/L.h, respectively. Thus, remaining cellulignin from acid pretreatment was submitted to alkaline hydrolysis followed by Semi-Simultaneous Saccharification and Co-fermentation in sequential processes to ethanol production, by using mixture of SB hemicellulosic and enzymatic hydrolysate as carbon source, verifying QP of 0.6 g/L.h. Moreover, a biomass multi-scale study was conducted by analysis of MEV, X-Ray, FTIR and Ramman Spectroscopy, verifying clear changes in SB structure along each pretreatment. These novel approaches indicated the potential of these integrated use of SB carbohydrates portion for bioproducts obtaining from SB in sustainable processes.

Suggested Citation

  • Antunes, Felipe A.F. & Thomé, Lucas C. & Santos, Júlio C. & Ingle, Avinash P. & Costa, Cassiano B. & Anjos, Virgilio Dos & Bell, Maria J.V. & Rosa, Carlos A. & Silva, Silvio S.Da, 2021. "Multi-scale study of the integrated use of the carbohydrate fractions of sugarcane bagasse for ethanol and xylitol production," Renewable Energy, Elsevier, vol. 163(C), pages 1343-1355.
    • Handle: RePEc:eee:renene:v:163:y:2021:i:c:p:1343-1355
    DOI: 10.1016/j.renene.2020.08.020
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    References listed on IDEAS

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    1. Raj, Kanak & Krishnan, Chandraraj, 2020. "Improved co-production of ethanol and xylitol from low-temperature aqueous ammonia pretreated sugarcane bagasse using two-stage high solids enzymatic hydrolysis and Candida tropicalis," Renewable Energy, Elsevier, vol. 153(C), pages 392-403.
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    Cited by:

    1. Li, Fenghai & Zhao, Chaoyue & Fan, Hongli & Xu, Meiling & Guo, Qianqian & Li, Yang & Wu, Lishun & Wang, Tao & Fang, Yitian, 2022. "Ash fusion behaviors of sugarcane bagasse and its modification with sewage sludge addition," Energy, Elsevier, vol. 251(C).
    2. Liu, Yao & Zheng, Xiaojie & Tao, Shunhui & Hu, Lei & Zhang, Xiaodong & Lin, Xiaoqing, 2021. "Process optimization for deep eutectic solvent pretreatment and enzymatic hydrolysis of sugar cane bagasse for cellulosic ethanol fermentation," Renewable Energy, Elsevier, vol. 177(C), pages 259-267.
    3. Vandenberghe, L.P.S. & Valladares-Diestra, K.K. & Bittencourt, G.A. & Zevallos Torres, L.A. & Vieira, S. & Karp, S.G. & Sydney, E.B. & de Carvalho, J.C. & Thomaz Soccol, V. & Soccol, C.R., 2022. "Beyond sugar and ethanol: The future of sugarcane biorefineries in Brazil," Renewable and Sustainable Energy Reviews, Elsevier, vol. 167(C).

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