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oai:riubu.ubu.es:10259/74422023-04-11T10:32:58Zcom_10259_4244com_10259_5086com_10259_2604col_10259_4245

Valorization of brewer’s spent grain by furfural recovery/removal from subcritical water hydrolysates by pervaporation Alonso Riaño, Patricia Illera Gigante, Alba Ester Amândio, Mariana S.T. Xavier, Ana María Rebelo Barreto Beltrán Calvo, Sagrario Sanz Díez, Mª Teresa Brewer's spent grain Subcritical water hydrolysates Pervaporation PDMS/POMS membranes Furfural Ingeniería química Biología Chemical engineering Biology This work is focused on the development of a sustainable process for the valorisation of the main by-product generated in the brewing industry, the brewer’s spent grain (BSG). A two-step process combining subcritical water treatment and pervaporation (PV) was proposed to hydrolyse the hemicelluloses fraction of this lignocellulosic biomass and further removal/recovery of some of the degradation products of sugars by using two different organophilic membranes, polydimethylsiloxane (PDMS) and polyoctilmethylsiloxane (POMS) membranes. Specifically, furfural is the dehydration product of pentoses and it is one of the top biomass-based chemicals being an important platform chemical. For synthetic binary mixtures, lower total permeation flux but higher enrichment factors for furfural were determined for POMS. When dealing with subW hydrolysates, POMS membranes yielded the highest furfural recovery, 94.1 %, with permeate concentrations as high as 40 g⋅L1 . Furthermore, it was assessed that PV is a suitable detoxification method that yielded a retentate nearly free of furfural allowing its use as growth media in the opposite to the subW hydrolysate with inhibitory furfural concentrations for microbial bioprocesses. This work was supported by the Agencia Estatal de Investigacion ´ [Grants No PID2019-104950RB-I00 / AEI / 10.13039/501100011033, TED2021-129311B-I00 and PDC2022-133443-I00] and the Junta de Castilla y Leon ´ (JCyL) and the European Regional Development Fund (ERDF) [grant number BU050P20]. P. Alonso-Riano ˜ predoctoral contract was funded by JCyL and the European Social Fund (ESF) by ORDEN EDU/556/2019 de 5 de junio. This work was also developed within the scope of the project CICECO-Aveiro Institute of Materials UIDB/50011/2020, UIDP/50011/ 2020 & LA/P/0006/2020 financed by national funds through the FCT/ MEC (PIDDAC). 2023-02-13T11:41:51Z 2023-02-13T11:41:51Z 2023-03 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 1383-5866 http://hdl.handle.net/10259/7442 10.1016/j.seppur.2022.123008 eng Separation and Purification Technology. 2023, V. 309, 123008 https://doi.org/10.1016/j.seppur.2022.123008 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/AEI/Plan Estatal de Investigación Científica, Técnica y de Innovación 2021-2023/TED2021-129311B-I00/ES/Tecnologías verdes basadas en el empleo de fluidos presurizados para valorizar biomasa lignocelulósica mediante la producción de furfural/ info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica, Técnica y de Innovación 2021-2023/PDC2022-133443-I00/ES/Diseño de un prototipo para la extracción de bioproductos con agua subcrítica/ info:eu-repo/grantAgreement/Junta de Castilla y León//BU050P20//Valorización de la fracción proteica de subproductos de la industria agroalimentaria de Castilla y León mediante tecnologías de fluidos presurizados/ info:eu-repo/grantAgreement/FCT//UIDB%2F50011%2F2020/PT/ info:eu-repo/grantAgreement/FCT//UIDP%2F50011%2F2020/PT/ info:eu-repo/grantAgreement/FCT//LA%2FP%2F0006%2F2020/PT/ Attribution-NonCommercial-NoDerivatives 4.0 Internacional http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess application/pdf Elsevier