2026-04-18T23:30:59Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/64412022-12-02T01:05:47Zcom_10259_4244com_10259_5086com_10259_2604col_10259_4245

Benito Román, Oscar 59 600 0000-0002-4418-0045 Alonso Riaño, Patricia 596 500 0000-0003-4765-5859 Díaz de Cerio Alonso de Mezquía, Elixabet 598 500 0000-0001-8404-6564 Sanz Díez, Mª Teresa 530 600 0000-0003-1799-3099 Beltrán Calvo, Sagrario 57 600 0000-0003-2559-3925 2022-03-09T14:06:56Z 2022-03-09T14:06:56Z 2022-06 2213-3437 http://hdl.handle.net/10259/6441 10.1016/j.jece.2022.107439 The semi-continuous hydrolysis of onion skin wastes (OSW) using subcritical water (SubW; working conditions: 105-180 ºC; 5 MPa; 2.5 mL/min) has been studied in this work. Liquids after hydrolysis showed a sharp increase in total organic carbon (>30 mg/g OSW) at temperatures above 145 ºC, when SubW began to promote the partial hydrolysis of the structural components of OSW. Among them, pectin was one of main components recovered (extraction yield up to 9% at 145 ºC), whereas cellulose was barely hydrolyzed in the range of temperatures studied. The composition of pectin demonstrated that SubW promoted the recovery of the valuable RG-I (21.1±1.1 mol %) regions compared to acid water extraction processes (10.8±0.9 mol %). The control of the hydrolysis conditions was found to be critical, since high temperatures and long hydrolysis times led to the formation of organic acids (acetic, formic and levulinic) and degradation products such as furfural (up to 0.8 mg/g OSW) from the C5 sugars. Finally, the High Heating Value (HHV) calculated for the solid residue obtained at 180 ºC (16.4±0.2 MJ/kg) indicated the potential use of this residue as a fuel, once the valuable compounds (phenolics and pectins) have been recovered. Agencia Estatal de Investigación (AEI) though projects PID2020-116716RJ-I00/ AEI / 10.13039/501100011033 and PID2019-104950RB-I00 / AEI / 10.13039/501100011033 and by the Junta de Castilla y León (JCyL) and the European Regional Development Fund (ERDF) through projects BU301P18 and BU050P20. Benito-Román post-doctoral contract was funded by JCyL and EDRF through project BU050P20 and by AEI through project PID2020-116716RJ-I00. E. Díaz de Cerio post-doctoral contract was funded by JCyL through project BU050P20. P. Alonso-Riaño predoctoral contract was funded by JCyL through ORDEN EDU/556/2019, de 5 de junio. application/pdf eng Elsevier Journal of Environmental Chemical Engineering. 2022, V. 10, n. 3, 107439 https://doi.org/10.1016/j.jece.2022.107439 info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-116716RJ-I00/ES/TECNOLOGIAS DE FLUIDOS PRESURIZADOS PARA LA VALORIZACION DE SUBPRODUCTOS DE LA INDUSTRIA AGROALIMENTARIA: RECUPERACION DE PECTINA Y OTROS COMPUESTOS BIOACTIVOS DE ALTO VALOR info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2019-104950RB-I00/ES/VALORIZACION DE SUBPRODUCTOS MARINOS MEDIANTE TECNOLOGIAS DE FLUIDOS SUB- Y SUPERCRITICOS PARA LA OBTENCION DE BIOCOMPUESTOS VALIOSOS info:eu-repo/grantAgreement/Junta de Castilla y León//BU301P18 info:eu-repo/grantAgreement/Junta de Castilla y León//BU050P20 Attribution-NonCommercial-NoDerivatives 4.0 Internacional http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess Onion Subcritical water Pectin Hydrolysis Biomass RG-I Ingeniería química Chemical engineering Semi-continuous hydrolysis of onion skin wastes with subcritical water: pectin recovery and oligomers identification info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Journal of Environmental Chemical Engineering 107439 THUMBNAIL Benito-jece_2022.pdf.jpg Benito-jece_2022.pdf.jpg IM Thumbnail image/jpeg 4248 https://riubu.ubu.es/bitstream/10259/6441/4/Benito-jece_2022.pdf.jpg de842c39d7122ea7cac49c641a3f644e MD5 4 Benito-Jece_2022.pdf.jpg Benito-Jece_2022.pdf.jpg IM Thumbnail image/jpeg 4820 https://riubu.ubu.es/bitstream/10259/6441/7/Benito-Jece_2022.pdf.jpg b623367632f51eb38a0114bf1b2583ee MD5 7 LICENSE license.txt license.txt text/plain; charset=utf-8 998 https://riubu.ubu.es/bitstream/10259/6441/3/license.txt aa90105e1c90a1b4fe810649aa967b7d MD5 3 CC-LICENSE license_rdf license_rdf application/rdf+xml; charset=utf-8 805 https://riubu.ubu.es/bitstream/10259/6441/2/license_rdf 4460e5956bc1d1639be9ae6146a50347 MD5 2 ORIGINAL Benito-Jece_2022.pdf Benito-Jece_2022.pdf application/pdf 3069996 https://riubu.ubu.es/bitstream/10259/6441/6/Benito-Jece_2022.pdf 7dc953351553892879e9c2f4e4135cf8 MD5 6 10259/6441 oai:riubu.ubu.es:10259/6441 2022-12-02 02:05:47.246 Repositorio Institucional de la Universidad de Burgos bubrep@ubu.es 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