Electrochemical quantification of d-glucose during the production of bioethanol from thermo-mechanically pre-treated wheat straw.

Autor: Ward RA; Department of Chemical Engineering, The University of Hull, Cottingham Road, Kingston-upon-Hull HU6 7RX, United Kingdom.; Aura Innovation Centre, Bridgehead Business Park, Meadow Road, Hessle HU13 0GD, United Kingdom., Charlton A; BioComposites Centre, Bangor University, Alun Roberts Building, Bangor, Gwynedd LL57 2UW, Wales, United Kingdom., Welham KJ; Department of Chemistry and Biochemistry, The University of Hull, Cottingham Road, Kingston-upon-Hull HU6 7RX, United Kingdom., Baker P; BioComposites Centre, Bangor University, Alun Roberts Building, Bangor, Gwynedd LL57 2UW, Wales, United Kingdom., Zein SH; Department of Chemical Engineering, The University of Hull, Cottingham Road, Kingston-upon-Hull HU6 7RX, United Kingdom.; Aura Innovation Centre, Bridgehead Business Park, Meadow Road, Hessle HU13 0GD, United Kingdom., Tomkinson J; National Non-Foods Crops Centre (NNFCC), Ltd., Biocentre, York Science Park, Innovation Way, York YO10 5DG, United Kingdom., Richards DI; Aura Innovation Centre, Bridgehead Business Park, Meadow Road, Hessle HU13 0GD, United Kingdom., Kelly SM; Aura Innovation Centre, Bridgehead Business Park, Meadow Road, Hessle HU13 0GD, United Kingdom.; Department of Chemistry and Biochemistry, The University of Hull, Cottingham Road, Kingston-upon-Hull HU6 7RX, United Kingdom., Lawrence NS; Department of Chemical Engineering, The University of Hull, Cottingham Road, Kingston-upon-Hull HU6 7RX, United Kingdom.; Aura Innovation Centre, Bridgehead Business Park, Meadow Road, Hessle HU13 0GD, United Kingdom., Wadhawan JD; Department of Chemical Engineering, The University of Hull, Cottingham Road, Kingston-upon-Hull HU6 7RX, United Kingdom.; Aura Innovation Centre, Bridgehead Business Park, Meadow Road, Hessle HU13 0GD, United Kingdom.
Jazyk: angličtina
Zdroj: Electrochemistry communications [Electrochem commun] 2021 Mar; Vol. 124, pp. 106942.
DOI: 10.1016/j.elecom.2021.106942
Abstrakt: Mechanical pre-treatment (disc refining) of wheat straw, at both atmospheric and elevated pressure, is shown to be an efficient process to access fermentable monosaccharides, with the potential to integrate within the infrastructure of existing first-generation bioethanol plants. The mild, enzymatic degradation of this sustainable lignocellulosic biomass affords ca. 0.10-0.13 g/g (dry weight) of d-glucose quantifiable voltammetrically in real time, over a two hundred-fold range in experimental laboratory scales (25 mL to 5.0 L), with pressure disc refining of the wheat straw enabling almost twice the amount of d-glucose to be generated during the hydrolysis stage than experiments using atmospheric refining (0.06-0.09 g/g dry weight). Fermentation of the resulting hydrolysate affords 0.08-0.10 g/g (dry weight) of ethanol over similar scales, with ethanol productivity at ca. 37 mg/(L h). These results demonstrate that minimal cellulose decomposition occurs during pressure refining of wheat straw, in contrast to hemicellulose, and suggest that the development of green, mechanochemical processes for the scalable and cost-effective manufacture of second-generation bioethanol requires improved cellulose decomposition.
Competing Interests: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(© 2021 The Author(s).)
Databáze: MEDLINE
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