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Investigating the Technical and Economic Potential of Solid-State Fungal Pretreatment at Nonsterile Conditions for Sugar Production from Poplar Wood

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Download Hi-Res ImageDownload to MS-PowerPointCite This:Ind. Eng. Chem. Res. 2023, 62, 44, 18292-18302
    Bioengineering

    Investigating the Technical and Economic Potential of Solid-State Fungal Pretreatment at Nonsterile Conditions for Sugar Production from Poplar Wood
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    • Nikolett Wittner
      Nikolett Wittner
      Biochemical Wastewater Valorization and Engineering (BioWAVE), Faculty of Applied Engineering, University of Antwerp, 2020 Antwerpen, Belgium
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    • Konstantina Vasilakou
      Konstantina Vasilakou
      Environmental Economics (EnvEcon), Department of Engineering Management, University of Antwerp, 2000 Antwerpen, Belgium
      Intelligence in Processes, Advanced Catalysts and Solvents (iPRACS), Faculty of Applied Engineering, University of Antwerp, 2020 Antwerpen, Belgium
      Flanders Make @UAntwerp, 2000 Antwerpen, Belgium
      More by Konstantina Vasilakou
      Orcidhttps://orcid.org/0000-0001-8609-9512
    • Waut Broos
      Waut Broos
      Biochemical Wastewater Valorization and Engineering (BioWAVE), Faculty of Applied Engineering, University of Antwerp, 2020 Antwerpen, Belgium
      More by Waut Broos
    • Siegfried E. Vlaeminck
      Siegfried E. Vlaeminck
      Sustainable Energy, Air and Water Technology (DuEL), Department of Bioscience Engineering, University of Antwerp, 2020 Antwerpen, Belgium
      More by Siegfried E. Vlaeminck
      Orcidhttps://orcid.org/0000-0002-2596-8857
    • Philippe Nimmegeers
      Philippe Nimmegeers
      Environmental Economics (EnvEcon), Department of Engineering Management, University of Antwerp, 2000 Antwerpen, Belgium
      Intelligence in Processes, Advanced Catalysts and Solvents (iPRACS), Faculty of Applied Engineering, University of Antwerp, 2020 Antwerpen, Belgium
      Flanders Make @UAntwerp, 2000 Antwerpen, Belgium
      More by Philippe Nimmegeers
      Orcidhttps://orcid.org/0000-0002-2086-7694
    • Iris Cornet*
      Iris Cornet
      Biochemical Wastewater Valorization and Engineering (BioWAVE), Faculty of Applied Engineering, University of Antwerp, 2020 Antwerpen, Belgium
      *Email address: [email protected]. Phone: +32-3-2651704.
      More by Iris Cornet
      Orcidhttps://orcid.org/0000-0002-7057-0944
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    Industrial & Engineering Chemistry Research

    Cite this: Ind. Eng. Chem. Res. 2023, 62, 44, 18292–18302
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    https://doi.org/10.1021/acs.iecr.3c02316
    Published October 24, 2023
    Copyright © 2023 American Chemical Society
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    Abstract

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    Pretreatment is crucial for the conversion of lignocellulose to biofuels. Unlike conventional chemical/physicochemical methods, fungal pretreatment uses white-rot fungi and mild reaction conditions. However, challenges, including substrate sterilization, long duration, and low sugar yields associated with this method, contribute to lower techno-economic performance, an aspect that has rarely been investigated. This study aimed to evaluate the feasibility of fungal pretreatment of nonsterilized poplar wood. Various factors, including inoculum types, fermentation supplements, and cultivation methods, were investigated to optimize the process. A techno-economic assessment of the optimized processes was performed at a full biorefinery scale. The scenario using nonsterilized wood as a substrate, precolonized wood as an inoculum, and a 4 week pretreatment showed a 14.5% reduction in sugar production costs (€2.15/kg) compared to using sterilized wood. Although the evaluation of nonsterilized wood pretreatment showed promising cost reductions, fungal pretreatment remained more expensive than conventional methods due to the significant capital investment required.

    Copyright © 2023 American Chemical Society

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    Supporting Information

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    The Supporting Information is available free of charge at https://pubs.acs.org/doi/10.1021/acs.iecr.3c02316.

    • Lignocellulose degradation after spore-inoculated pretreatment of sterilized and nonsterilized wood, glucose and xylose yield after the enzymatic saccharification of the pretreated and sterilized wood, glucose yield after the enzymatic saccharification of pretreated, nonsterilized wood inoculated with precolonized wood in bottles, glucose and xylose yield after the enzymatic saccharification of sterilized wood pretreated in bottles and nonsterilized wood pretreated in bottles or in trays, glucose and xylose yield after the enzymatic saccharification of wood pretreated in bottles applying different mixing ratios, feedstock properties, , and fungal pretreatment conditions, lignocellulose degradation, and enzymatic digestibility in scenarios I and II (PDF)

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    Industrial & Engineering Chemistry Research

    Cite this: Ind. Eng. Chem. Res. 2023, 62, 44, 18292–18302
    Click to copy citationCitation copied!
    https://doi.org/10.1021/acs.iecr.3c02316
    Published October 24, 2023
    Copyright © 2023 American Chemical Society
    Request reuse permissions

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