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Energies 2018, 11(1), 50; doi:10.3390/en11010050

Organosolv Fractionation of Softwood Biomass for Biofuel and Biorefinery Applications

Biochemical Process Engineering, Division of Chemical Engineering, Department of Civil, Environmental and Natural Resources Engineering, Luleå University of Technology, 971-87 Luleå, Sweden
Author to whom correspondence should be addressed.
Received: 6 November 2017 / Revised: 9 December 2017 / Accepted: 11 December 2017 / Published: 27 December 2017
(This article belongs to the Special Issue Thermo Fluid Conversion of Biomass)
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Softwoods represent a significant fraction of the available lignocellulosic biomass for conversion into a variety of bio-based products. Its inherent recalcitrance, however, makes its successful utilization an ongoing challenge. In the current work the research efforts for the fractionation and utilization of softwood biomass with the organosolv process are reviewed. A short introduction into the specific challenges of softwood utilization, the development of the biorefinery concept, as well as the initial efforts for the development of organosolv as a pulping method is also provided for better understanding of the related research framework. The effect of organosolv pretreatment at various conditions, in the fractionation efficiency of wood components, enzymatic hydrolysis and bioethanol production yields is then discussed. Specific attention is given in the effect of the pretreated biomass properties such as residual lignin on enzymatic hydrolysis. Finally, the valorization of organosolv lignin via the production of biofuels, chemicals, and materials is also described. View Full-Text
Keywords: organosolv; lignocellulose; spruce; pine; fir; fractionation; pretreatment; enzymatic hydrolysis; bioethanol organosolv; lignocellulose; spruce; pine; fir; fractionation; pretreatment; enzymatic hydrolysis; bioethanol

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Nitsos, C.; Rova, U.; Christakopoulos, P. Organosolv Fractionation of Softwood Biomass for Biofuel and Biorefinery Applications. Energies 2018, 11, 50.

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