Author, as appears in the article.: Ahorsu R; Constanti M; de María PD; Medina F
Department: Enginyeria Química
URV's Author/s: Constantí Garriga, Magdalena / Medina Cabello, Francisco
Keywords: Walnut shell Microwave processes Lignocellulosic biomass Lignin Deep eutectic solvents Ball milling wood separation microwave processes lignin infrared-spectroscopy fractionation extraction des depolymerization deep eutectic solvents cellulose ball milling acid
Abstract: The combination of ball milling (BM), microwave irradiation (MI), and deep eutectic solvents (DES) results synergistic for an efficient, selective, and very rapid (10 min) delignification of materials with high lignin content (ca. 50 wt%) such as walnut shells (WS). Lignin is dissolved in the DES, whereas the polysaccharide fractions remain suspended with limited degradation, due to the rapid pretreatment. After ball milling procedure (3 h), biomass loadings in the range of 100–200 g L−1 are selectively delignified in 10 min at 150 °C by using choline chloride:formic acid DES (1:2 molar ratio), rendering lignin yields of 60–80% (ca. ~ 40–60 g lignin L−1). Ball milling, microwave irradiation, and DES systems are much more efficient than ball milling, conventional heating, and DES system. The obtained lignins exhibited similar Fourier-transform infrared spectroscopy (FTIR) profile to that of milled wood lignin (MWL), indicating minimal functional group changes. Graphical abstract: [Figure not available: see fulltext.].
Thematic Areas: Renewable energy, sustainability and the environment Química Interdisciplinar Ensino Engineering, chemical Engenharias ii Energy & fuels Ciências biológicas ii Ciências agrárias i Ciência de alimentos Biotecnología
licence for use: https://creativecommons.org/licenses/by/3.0/es/
Author's mail: magdalena.constanti@urv.cat francesc.medina@urv.cat
Author identifier: 0000-0002-3547-4199 0000-0002-3111-1542
Record's date: 2024-09-07
Papper version: info:eu-repo/semantics/publishedVersion
Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
Papper original source: Biomass Conversion And Biorefinery.
APA: Ahorsu R; Constanti M; de María PD; Medina F (2022). Synergy of ball milling, microwave irradiation, and deep eutectic solvents for a rapid and selective delignification: walnut shells as model for lignin-enriched recalcitrant biomass. Biomass Conversion And Biorefinery, (), -. DOI: 10.1007/s13399-022-03566-y
Entity: Universitat Rovira i Virgili
Journal publication year: 2022
Publication Type: Journal Publications
Repositori URV