Technologies for Eucalyptus wood processing in the scope of biorefineries: A comprehensive review

Penín, Lucía; López, Mar; Santos, Valentín; Alonso, José Luís; Parajó, Juan Carlos

doi:10.1016/j.biortech.2020.123528

Cited by 37 publications

(13 citation statements)

References 132 publications

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“…The wood lot employed in this study contained, in oven-dry mass basis, 22.1% ± 0.2% Klason lignin, 1.38 ± 0.07 acid soluble lignin, 44.4% ± 0.2% cellulose, 15.6% ± 0.2% xylan, 0.43% ± 0.06% arabinosyl units, 0.90% ± 0.06% mannosyl units, 1.02% ± 0.03% galactosyl units, and 2.95% ± 0.09% acetyl groups. This composition is typical for Eucalyptus globulus, as it can be seen in a recent review [4]. Among the above fractions, cellulose, galactosyl units, and mannosyl units are potential substrates for manufacturing HMF and/or LevA/FA; xylan and arabinosyl groups are potential substrates for FF manufacture; and acetyl groups yield acetic acid (AcH) upon hydrolysis.…”

Section: Composition Of Eucalyptus Globulus Woodmentioning

confidence: 66%

Performance of 1-(3-Sulfopropyl)-3-Methylimidazolium Hydrogen Sulfate as a Catalyst for Hardwood Upgrading into Bio-Based Platform Chemicals

et al. 2020

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The acidic ionic liquid 1-(3-sulfopropyl)-3-methylimidazolium hydrogen sulfate ([C3SO3Hmim]HSO4) was employed as a catalyst for manufacturing polysaccharide-derived products (soluble hemicellulose-derived saccharides, furans, and/or organic acids) from Eucalyptus globulus wood. Operation was performed in aqueous media supplemented with [C3SO3Hmim]HSO4 and methyl isobutyl ketone, following two different processing schemes: one-pot reaction or the solubilization of hemicelluloses by hydrothermal processing followed by the separate manufacture of the target compounds from both hemicellulose-derived saccharides and cellulose. Depending on the operational conditions, the one-pot reaction could be directed to the formation of furfural (at molar conversions up to 92.6%), levulinic acid (at molar conversions up to 45.8%), or mixtures of furfural and levulinic acid (at molar conversions up to 81.3% and 44.8%, respectively). In comparison, after hydrothermal processing, the liquid phase (containing hemicellulose-derived saccharides) yielded furfural at molar conversions near 78%, whereas levulinic acid was produced from the cellulose-enriched, solid phase at molar conversions up to 49.5%.

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Section: Composition Of Eucalyptus Globulus Woodmentioning

confidence: 66%

Performance of 1-(3-Sulfopropyl)-3-Methylimidazolium Hydrogen Sulfate as a Catalyst for Hardwood Upgrading into Bio-Based Platform Chemicals

et al. 2020

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“…Despite having a lot of potential for the separation of lignocellulosic components, the high viscosity of DESs is an obvious disadvantage ( Kumar and Sharma, 2017 ), and hemicellulose is underutilized ( Penín et al, 2020 ).…”

Section: Traditional Pretreatment Methodsmentioning

confidence: 99%

The Pretreatment of Lignocelluloses With Green Solvent as Biorefinery Preprocess: A Minor Review

et al. 2021

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Converting agriculture and forestry lignocellulosic residues into high value-added liquid fuels (ethanol, butanol, etc.), chemicals (levulinic acid, furfural, etc.), and materials (aerogel, bioresin, etc.) via a bio-refinery process is an important way to utilize biomass energy resources. However, because of the dense and complex supermolecular structure of lignocelluloses, it is difficult for enzymes and chemical reagents to efficiently depolymerize lignocelluloses. Strikingly, the compact structure of lignocelluloses could be effectively decomposed with a proper pretreatment technology, followed by efficient separation of cellulose, hemicellulose and lignin, which improves the conversion and utilization efficiency of lignocelluloses. Based on a review of traditional pretreatment methods, this study focuses on the discussion of pretreatment process with recyclable and non-toxic/low-toxic green solvents, such as polar aprotic solvents, ionic liquids, and deep eutectic solvents, and provides an outlook of the industrial application prospects of solvent pretreatment.

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“…In the plant cell wall, hemicellulose and lignin are connected by covalent bonds and hydrogen bonds to form heterogenous structure, which is coated on cellulose to form is a strong “natural anti degradation barrier”. This barrier greatly limits the efficiency of biomass refinery ( Penín et al, 2020 ). Pretreatment is an essential process to overcome the recalcitrance of biomass and achieve efficient fractionation of biomass components.…”

Section: Introductionmentioning

confidence: 99%

Effective fractionation of lignocellulose components and lignin valorization by combination of deep eutectic solvent with ethanol

Cui

Chai

et al. 2023

Front. Bioeng. Biotechnol.

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Introduction: A combination of deep eutectic solvent with ethanol was developed for pretreatment of Broussonetia papyrifera to effectively extract lignin and promote the subsequent enzymatic hydrolysis.Methods: In order to further explore the optimal conditions for enzymatic hydrolysis, a central composite design method was applied.Results and Discussion: The correlation between each factor and glucose yield was obtained, and the optimal conditions was 160°C, 60 min, the ratio of DES to E was 1/1 (mol/mol). The results showed that compared with control, the glucose yield increased by 130.67% under the optimal pretreatment conditions. Furthermore, the specific surface area of biomass was increased by 66.95%, and the content of xylan and lignin was decreased by 86.71% and 85.83%. The correlation between xylan/lignin removal and enzymatic hydrolysis showed that the removal of lignin facilitated the glucose yield more significantly than that of xylan. To further explore the lignin valorization, the structural and antioxidant analysis of recovered lignin revealed that high temperature was favorable for lignin with good antioxidant performance. This pretreatment is a promising method for separating lignin with high antioxidant activity and improving cellulose digestibility.

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Technologies for Eucalyptus wood processing in the scope of biorefineries: A comprehensive review

Cited by 37 publications

References 132 publications

Performance of 1-(3-Sulfopropyl)-3-Methylimidazolium Hydrogen Sulfate as a Catalyst for Hardwood Upgrading into Bio-Based Platform Chemicals

Performance of 1-(3-Sulfopropyl)-3-Methylimidazolium Hydrogen Sulfate as a Catalyst for Hardwood Upgrading into Bio-Based Platform Chemicals

The Pretreatment of Lignocelluloses With Green Solvent as Biorefinery Preprocess: A Minor Review

Effective fractionation of lignocellulose components and lignin valorization by combination of deep eutectic solvent with ethanol

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