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Ethanol from Nordic wood raw material by simplified alkaline soda cooking pre-treatment

Author

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  • von Schenck, A.
  • Berglin, N.
  • Uusitalo, J.

Abstract

Ethanol production from lignocellulosic raw materials will generate multiple streams, since only a certain fraction of the material can be converted into sugars and then fermented to ethanol. This requires a ‘poly-generation’ approach, where by-products also must have high value (e.g. lignin, sugars from hemicellulose). To reach the large scale required for profitability, it is proposed that the best way is to integrate the new processes with existing industries, preferably those that already operate biomass-to-materials or biomass-to-fuels plants. One of the largest industry branches in this respect is the pulp and paper industry. Production of second generation ethanol (or other products) via sugars from lignocellulosic materials includes a relatively costly pre-treatment of the raw material in order to separate the lignin from the cellulose. This separation of the wood components already takes place in the chemical pulp mill, and the long proven technology in pulp production known as soda cooking (pre-treatment under alkaline conditions) is further evaluated in this study. It can be directly integrated into the recovery of chemicals and energy in the pulp mill. The pre-treatment of the lignocellulosic material studied in this work is alkaline and sulphur-free, and results in a technically pure cellulose to be fed to the hydrolysis stage, which makes it different compared to most of the other processes that aim to produce ethanol from lignocelluloses. The process chain from enzymatic hydrolysis to ethanol is very similar to that being used today for grain ethanol.

Suggested Citation

  • von Schenck, A. & Berglin, N. & Uusitalo, J., 2013. "Ethanol from Nordic wood raw material by simplified alkaline soda cooking pre-treatment," Applied Energy, Elsevier, vol. 102(C), pages 229-240.
    • Handle: RePEc:eee:appene:v:102:y:2013:i:c:p:229-240
    DOI: 10.1016/j.apenergy.2012.10.003
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    Cited by:

    1. Li, Bin & Ding, Li & Xu, Huanfei & Mu, Xindong & Wang, Haisong, 2017. "Multivariate data analysis applied in alkali-based pretreatment of corn stover," Resources, Conservation & Recycling, Elsevier, vol. 122(C), pages 307-318.
    2. Sun, Shao-Long & Wen, Jia-Long & Ma, Ming-Guo & Sun, Run-Cang, 2014. "Enhanced enzymatic digestibility of bamboo by a combined system of multiple steam explosion and alkaline treatments," Applied Energy, Elsevier, vol. 136(C), pages 519-526.
    3. Pettersson, Karin & Wetterlund, Elisabeth & Athanassiadis, Dimitris & Lundmark, Robert & Ehn, Christian & Lundgren, Joakim & Berglin, Niklas, 2015. "Integration of next-generation biofuel production in the Swedish forest industry – A geographically explicit approach," Applied Energy, Elsevier, vol. 154(C), pages 317-332.
    4. Zhu, Ming-Qiang & Wen, Jia-Long & Wang, Zhi-Wen & Su, Yin-Quan & Wei, Qin & Sun, Run-Cang, 2015. "Structural changes in lignin during integrated process of steam explosion followed by alkaline hydrogen peroxide of Eucommia ulmoides Oliver and its effect on enzymatic hydrolysis," Applied Energy, Elsevier, vol. 158(C), pages 233-242.
    5. Barakat, Abdellatif & Monlau, Florian & Solhy, Abderrahim & Carrere, Hélène, 2015. "Mechanical dissociation and fragmentation of lignocellulosic biomass: Effect of initial moisture, biochemical and structural proprieties on energy requirement," Applied Energy, Elsevier, vol. 142(C), pages 240-246.
    6. Camila María Imlauer Vedoya & María Cristina Area & Natalia Raffaeli & Fernando Esteban Felissia, 2022. "Study on Soda–Ethanol Delignification of Pine Sawdust for a Biorefinery," Sustainability, MDPI, vol. 14(11), pages 1-14, May.

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