RT journal article
T1 Lignin extraction from acacia wood: Crafting deep eutectic solvents with a systematic D-optimal mixture-process experimental design
A1 Fernandes, Catarina
A1 Aliaño González, María José
A1 Cid Gomes, Leandro
A1 Bernin, Diana
A1 Gaspar, Rita
A1 Fardim, Pedro
A1 Reis, Marco S.
A1 Alves, Luís
A2 Química Analítica
K1 Biomass fractionation
K1 DES recovery and reuse
K1 Design of experiments
K1 Lignin extraction
K1 Lignin purity
K1 Ternary deep eutectic solvents
AB Lignin is a complex biopolymer whose efficient extraction from biomass is crucial for various applications. Deep eutectic solvents (DES), particularly natural-origin DES (NADES), have emerged as promising systems for lignin fractionation and separation from other biomass components. While ternary DES offer enhanced fractionation performance, the role of each component in these mixtures remains unclear. In this study, the effects of adding tartaric acid (Tart) or citric acid (Cit) to a common binary DES mixture composed of lactic acid (Lact) and choline chloride (ChCl) were investigated for lignin extraction from acacia wood. Ternary Cit-based DES showed superior performance compared to Tart-based DES. Using a combined mixture-process D-Optimal experimental design, the Lact:Cit:ChCl DES composition and extraction temperature were optimized targeting maximum lignin yield and purity. The optimal conditions (i.e., Lact:Cit:ChCl, 0.6:0.3:0.1 molar ratio, 140 °C) resulted in a lignin extraction yield of 99.63 ± 1.24 % and a lignin purity of 91.45 ± 1.03 %. Furthermore, this DES exhibited feasible recyclability and reusability without sacrificing efficiency.
PB Elsevier B.V.
SN 1879-0003
YR 2024
FD 2024
LK http://hdl.handle.net/10498/35883
UL http://hdl.handle.net/10498/35883
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 09-nov-2026