RT info:eu-repo/semantics/conferenceObject
T1 Production of cellulose nanofibers from onion peels using Nades and microfluidization: a sustainable valorization strategy
A1 Benito Román, Oscar
A1 Beltrán Calvo, Sagrario
A1 Sanz Díez, Mª Teresa
K1 Cellulose nanofibers
K1 NADES
K1 Onion peels
K1 Lignocellulosic biomass
K1 Circular bioeconomy
K1 Green pretreatment
AB Agro-industrial residues are an abundant and underutilized source of lignocellulosic biomass withstrong potential for the development of bio-based materials. In this study, onion peels—a majorby-product of the agri-food sector—were valorised for the production of cellulose nanofibers(CNF) through a green pretreatment based on Natural Deep Eutectic Solvents (NADES), followedby mechanical fibrillation (microfluidization). The NADES system, composed of betaine(hydrogen bond acceptor, HBA) and tartaric acid (hydrogen bond donor, HBD) in a 1:2 molar ratio(HBA:HBD), was applied at 120 °C for 6 hours. This treatment yielded a solid residue enriched incellulose (72%) and lignin (15%), suitable for further processing. Subsequently, the pretreatedbiomass was the treated using a Microfluidics LM-20 unit equipped with a Z-type interactionchamber (H210Z, 200 μm). The influence of homogenization pressure (up to 150 MPa) and thenumber of passes was evaluated. The resulting CNFs exhibited a high aspect ratio as confirmed bymorphological analyses. Additionally, they demonstrated promising techno-functional properties,including excellent water retention capacity and potential as emulsifying agents. This processprovides a sustainable and efficient alternative to conventional chemical pretreatments and alignswith circular bioeconomy principles by converting low-value agricultural waste into high-valuenanomaterials. These findings support the implementation of NADES-based technologies inintegrated biorefinery strategies aimed at producing advanced materials from renewable sources.
YR 2025
FD 2025
LK https://hdl.handle.net/10259/12215
UL https://hdl.handle.net/10259/12215
LA eng
NO Póster presentado en: XVI International Scientific Agriculture Symposium "Agrosym 2025", Jahorina, Bosnia and Herzegovina, October 2-5, 2025
NO This work is supported by the Spanish Research Agency (AEI) [grant number PID2022-136385OB-I00], Junta de Castilla y León (JCyL), and European Regional Development Fund (ERDF) [grant number BU027P23]. Ó. Benito-Román contract is funded by Ministerio de Ciencia, Innovación y Universidades through grant RYC2023-043578-I.
DS Repositorio Institucional de la Universidad de Burgos
RD 03-oct-2026