Green Deep Eutectic Solvents for Microwave-Assisted Biomass Delignification and Valorisation
Articolo
Data di Pubblicazione:
2021
Abstract:
Aiming to fulfil the sustainability criteria of future biorefineries, a novel biomass pretreatment
combining natural deep eutectic solvents (NaDESs) and microwave (MW) technology
was developed. Results showed that NaDESs have a high potential as green solvents for lignin
fractionation/recovery and sugar release in the following enzymatic hydrolysis. A new class of lignin
derived NaDESs (LigDESs) was also investigated, showing promising effects in wheat straw delignification.
MW irradiation enabled a fast pretreatment under mild condition (120 C, 30 min). To better
understand the interaction of MW with these green solvents, the dielectric properties of NaDESs
were investigated. Furthermore, a NaDES using the lignin recovered from biomass pretreatment as
hydrogen bond donor was prepared, thus paving the way for a “closed-loop” biorefinery process.
Tipologia CRIS:
03A-Articolo su Rivista
Keywords:
NaDES; microwave-assisted delignification; dielectric properties; lignin-derived phenolics;
enzymatic hydrolysis
Elenco autori:
Grillo, Giorgio; Calcio Gaudino, Emanuela; Rosa, Roberto; Leonelli, Cristina; Timonina, Ana; Grygiškis, Saulius; Tabasso, Silvia; Cravotto, Giancarlo
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