Deep eutectic solvents for fractionation and valorization of lignocellulose

Bao, Yansai; Wang, Yang; Yan, Chuanyu; Xue, Zhimin

doi:10.1016/j.gce.2024.04.001

Cited by 7 publications

(1 citation statement)

References 125 publications

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“…The global population growth has increased the demand for chemicals and fuels, exacerbating challenges like the energy crisis and environmental. − Sustainable development is crucial, focusing on efficient biorefineries that convert nonedible biomass, particularly lignocellulose, into eco-friendly products. , Lignocellulose comprises cellulose (40–45%), hemicellulose (30–35%), and lignin (15–30%), making it a promising feedstock for biofuels and biochemicals (Figure A and C). − Lignin, a complex biopolymer in plant cell walls, influences structural support and defense mechanism, formed from three monolignols, namely coniferyl alcohol (G unit), sinapyl alcohol (S unit), and p-coumaryl alcohol (H unit) (Figure B). Its structure includes diverse linkages such as β-O-4 , β–β , and β-5 structures (Figure C), , impacting its properties and applications.…”

Section: Introductionmentioning

confidence: 99%

Unlocking the Potential of Catechyl Lignin: Molecular Regulation of Biosynthesis, Structural Organization, And Valorization

Uddin,

Li,

Ullah

et al. 2024

ACS Sustainable Chem. Eng.

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Catechyl lignin (C-lignin), a type of lignin found in vanilla seed coats and some members of the Cactaceae and Euphorbiaceae families, has gained significant attention. C-lignin possesses a homogeneous linear structure that is characterized by the presence of a catechol group comprising a benzene ring with two hydroxyl groups. C-lignin also has substructures according to specific linkage patterns between its constituent monolignols, i.e., coniferyl (C), hydroxyphenyl (H), guaiacyl (G), and sinapyl (S) monomers. The linear structure of C-lignin makes it an ideal source for the development of carbon fiber-based composites, whereas its nonetherified structure and low molecular weight favor its microbial conversion to various useful products. However, to fully realize the potential of C-lignin, it is important to obtain its significant quantities through gene regulation. Technology must be developed to address these challenges and achieve the goals successfully. Genetic engineering techniques have been developed to increase C-lignin accumulation in specific plants for valorization. The extraction of C-lignin from biomass materials involves various effective methods to depolymerize it, producing aromatic compounds like propyl and propenyl catechol. This makes C-lignin a promising material for depolymerization and unlocking its valuable use, thanks to its homogeneous catechyl units. This review explores the biochemical and molecular regulation of C-lignin biosynthesis. It discusses the role of various enzymes, genes, and regulators in the accumulation of C-lignin in different plant species. The review also delves into the techniques, catalysts, and solvents employed in the extraction of C-lignin. Additionally, it discusses the depolymerization of C-lignin to produce various aromatic compounds, as well as its application in developing carbon fibers and polymeric composites. Finally, the review highlights the challenges and potential opportunities associated with utilizing the homogeneous and linear structure of C-lignin for future applications.

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Section: Introductionmentioning

confidence: 99%

Unlocking the Potential of Catechyl Lignin: Molecular Regulation of Biosynthesis, Structural Organization, And Valorization

Uddin,

Li,

Ullah

et al. 2024

ACS Sustainable Chem. Eng.

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Natural Low‐Melting Mixture Solvents for Green Recovery of Spent All‐Solid‐State Sodium‐Ion Batteries with Superior Efficiency over Lithium‐Ion Batteries

Chen,

Shen,

Liu

et al. 2024

ChemSusChem

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Spent all‐solid‐state sodium‐ion batteries (ASIBs) containing toxic and precious metal would be produced significantly and lead to resource waste and environmental pollution as the wide application of ASIBs in the near future. Therefore, it is necessary to develop green strategy for recovery of ASIBs. Here, we propose a safe, mild and green strategy to recover toxic and precious metals from cathode/solid electrolyte of ASIBs by using natural low‐melting mixture solvents (LoMMSs) with high selectivity and high leaching efficiency. Natural LoMMSs are abundant, natural available, cheap, non‐flammable, biodegradable and biocompatible. Results show that natural LoMMSs could leach nearly 100% Na and achieve superhigh Na/Zr selectivity of up to 58 from ASIBs at mild temperature, outperforming the recycling efficiency and selectivity of lithium‐ion batteries cathode. More importantly, we find that water could be used as a green and low‐cost anti‐solvent to precipitate the extracted metal from the leachate with low‐energy consumption at room temperature. This work provides a cost‐effective, energy‐saving, mild, green strategy for the recovery of cathode/solid electrolyte from spent ASIBs with high safety and high selectivity.

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Green low-melting mixture solvents/ionic liquids-based carbon materials and lithium-ion batteries recycling leachate unexpectedly cause water pollution from dissolved organic matter

Liu,

Han,

Zhang

et al. 2024

Journal of the Indian Chemical Society

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Deep eutectic solvents for fractionation and valorization of lignocellulose

Cited by 7 publications

References 125 publications

Unlocking the Potential of Catechyl Lignin: Molecular Regulation of Biosynthesis, Structural Organization, And Valorization

Unlocking the Potential of Catechyl Lignin: Molecular Regulation of Biosynthesis, Structural Organization, And Valorization

Natural Low‐Melting Mixture Solvents for Green Recovery of Spent All‐Solid‐State Sodium‐Ion Batteries with Superior Efficiency over Lithium‐Ion Batteries

Green low-melting mixture solvents/ionic liquids-based carbon materials and lithium-ion batteries recycling leachate unexpectedly cause water pollution from dissolved organic matter

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