2026-05-15T19:50:38Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/109142025-10-02T11:13:15Zcom_10259_4244com_10259_5086com_10259_2604col_10259_4245

Illera Gigante, Alba Ester 296 600 0000-0001-8321-5282 Sanz Díez, Mª Teresa 530 600 0000-0003-1799-3099 Mauricio-Iglesias, Miguel 1f72e3c6-d456-4ab6-ad27-3f6cbb9caa44 500 Cubero-Cardoso, Juan 197a826c-a9eb-4fbb-913a-5cf99b3e6bb1 500 2025-10-01T12:04:09Z 2025-10-01T12:04:09Z 2025-06 2027-04-27 0301-4797 https://hdl.handle.net/10259/10914 10.1016/j.jenvman.2025.125516 1095-8630 A cascade biorefinery concept was proposed for the first time to produce furfural and subsequent volatile fatty acids production using corn stover as biomass. In the first step, Subcritical water pre-treatment was used to extract furfural from hemicellulose into the liquid phase, while the solid phase, rich in cellulose and lignin, was fermented anaerobically in the second step to produce volatile fatty acids (VFA). A subcritical water treatment combined with CO2 as pressurizing agent was used both as a pre-treatment of the biomass, and for the production of furfural from the hemicellulose fraction of the lignocellulosic biomass. After 1h at 180 °C and 50 bar, a furfural yield of 29 % was obtained in the liquid phase. Acetic and formic acid were generated as side products of the treatment. Following this treatment, 49.4 % of the initial solids were recovered, with a marked reduction in hemicellulose content (from 33 % to 5 %) and an increase in both cellulose (from 39 % to 62 %) and lignin (from 21 % to 33 %). This solid was then subjected to anaerobic fermentation. Inoculum type was a key parameter, with 12 % higher volatile fatty acids production when cow rumen was used compared to anaerobic digestion (AD) sludge from a wastewater treatment plant. Pre-treatment of corn stover did not improve organic matter biodegradation, probably due to its high lignin content. However, the proposed cascade biorefinery showed to be successful for the consecutive production of two value-added products using low value corn stover as the raw material. This work was supported by the Agencia Estatal de Investigación (AEI), Ministerio de Ciencia e Innovación (MICINN) and Next Generation UE (Plan de Recuperaciónn, Transformación y Resiliencia) [grant numbers, TED2021-129311B-I00 and PID2022-136385OB-I00] and the Junta de Castilla y León (JCyL) and the European Regional Development Fund (ERDF) [grant number BU027P23]. The ODDITY project (TED2021-130289B-I00) was funded by MICIU/AEI/10.13039/501,100,011,033 and the European Union NextGenerationEU/PRTR. Funding for open access charge: University of Huelva/CBUA. application/pdf eng Elsevier Journal of Environmental Management. 2025, V. 384, 125516 https://doi.org/10.1016/j.jenvman.2025.125516 Attribution-NonCommercial-NoDerivatives 4.0 Internacional http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/embargoedAccess Agro-waste Anaerobic digestion Inoculum Subcritical water pre-treatment Furfural Residuos agrícolas (Combustible) Agricultural wastes as fuel Assessment cascade biorefinery process from corn stover: furfural and volatile fatty acid production via anaerobic fermentation info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Journal of Environmental Management 384 125516 THUMBNAIL Illera-jem_2025.pdf.jpg Illera-jem_2025.pdf.jpg IM Thumbnail image/jpeg 4537 https://riubu.ubu.es/bitstream/10259/10914/4/Illera-jem_2025.pdf.jpg a8dfad587a4549d91766df1b972495a1 MD5 4 LICENSE license.txt license.txt text/plain; charset=utf-8 998 https://riubu.ubu.es/bitstream/10259/10914/3/license.txt aa90105e1c90a1b4fe810649aa967b7d MD5 3 CC-LICENSE license_rdf license_rdf application/rdf+xml; charset=utf-8 805 https://riubu.ubu.es/bitstream/10259/10914/2/license_rdf 4460e5956bc1d1639be9ae6146a50347 MD5 2 ORIGINAL Illera-jem_2025.pdf Illera-jem_2025.pdf application/pdf 1080048 https://riubu.ubu.es/bitstream/10259/10914/1/Illera-jem_2025.pdf 50c750faf9266e2ea9d945d2d8c957ad MD5 1 10259/10914 oai:riubu.ubu.es:10259/10914 2025-10-02 13:13:15.913 Repositorio Institucional de la Universidad de Burgos bubrep@ubu.es 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