Organosolv biorefinery: resource-based process optimisation, pilot technology scale-up and economics

Tofani, Giorgio; Jasiukaitytė-Grojzdek, Edita; Grilc, Miha; Likozar, Blaž

doi:10.1039/d3gc03274d

Cited by 13 publications

(3 citation statements)

References 124 publications

(159 reference statements)

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“…Considering the above stated in Section , organosolv lignin would be the most appropriate lignin for vanillin production based on its structural properties, i.e., higher amount of β-O-4 bonds. However, this type of material is not widespread in the market and is not broadly considered as waste product, so in this study, it has been decided to select some type of industrial lignin as the main feedstock for its oxidative depolymerization process. Thus, Table shows the most relevant properties of Kraft lignin and sodium lignosulfonate used in this work.…”

Section: Resultsmentioning

confidence: 99%

Biobased Vanillin Production by Oxidative Depolymerization of Kraft Lignin on a Nitrogen- and Phosphorus-Functionalized Activated Carbon Catalyst

García-Rollán,

Rivas-Márquez,

Bertran-Llorens

et al. 2024

Energy Fuels

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The sustainable production of vanillin from the oxidative depolymerization of lignin was evaluated. Vanillin was produced from Kraft lignin using heterogeneous catalysts based on activated carbons prepared by chemical activation of sodium lignosulfonate with H 3 PO 4 . The novel redox catalytic system, obtained by HNO 3 treatment, allows the heterogenization of nitrobenzene structures on the activated carbon, reaching vanillin yield 30% higher than that obtained without a heterogeneous catalyst (about 3.1 wt %). A copper catalyst (5 wt %) was also prepared for comparison purposes. The highest vanillin yield was obtained at 200 °C and 10 bar for the nitrobenzene-like catalyst, reaching full extraction from the selected technical lignin. The catalyst was successfully reused without any regeneration treatment, evidencing no signs of deactivation. The possibility of transferring oxygen from oxidized P groups to reduced N groups in a redox cycle seems to be responsible for this sustained catalytic activity. To promote zero waste production, the obtained residual lignin was also used to prepare an activated carbon with outstanding properties, A BET ∼ 1000 m 2 /g.

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Section: Resultsmentioning

confidence: 99%

Biobased Vanillin Production by Oxidative Depolymerization of Kraft Lignin on a Nitrogen- and Phosphorus-Functionalized Activated Carbon Catalyst

García-Rollán,

Rivas-Márquez,

Bertran-Llorens

et al. 2024

Energy Fuels

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“…Steam explosion (SE) is a physicochemical pretreatment method that is a highly effective for lignocellulosic biomass pretreatment. 16,17 The generation of CO 2 is an integral part of the acidogenic/ acetogenic/methanogenic process. Metabolic pathways for various products include decarboxylation steps, leading to decreased product yield and quick release of CO 2 into the environment.…”

Section: Introductionmentioning

confidence: 99%

“…Steam explosion (SE) is a physicochemical pretreatment method that is a highly effective for lignocellulosic biomass pretreatment. 16,17…”

Section: Introductionmentioning

confidence: 99%

Carbonic anhydrase assisted acidogenic fermentation of forest residues for low carbon hydrogen and volatile fatty acid production: enhancedin situCO₂reduction and microbiological analysis

Sarkar,

Antonopoulou,

Xiros

et al. 2024

Green Chem.

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Model‐Assisted Optimization of Xylose, Arabinose, Glucose, Mannose, Galactose and Real Hemicellulose Streams Dehydration To (Hydroxymethyl)Furfural and Levulinic Acid

Jakob,

Likozar,

Grilc

2024

ChemSusChem

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Conversion of hemicellulose streams and the constituent monosaccharides, xylose, arabinose, glucose, mannose, and galactose, was conducted to produce value‐added chemicals, including furfural, hydroxymethylfurfural (HMF), levulinic acid and anhydrosugars. The study aimed at developing a kinetic model relevant for direct post‐Organosolv hemicellulose conversion. Monosaccharides served as a tool to in detail describe the kinetic behavior and segregate contribution of hydrothermal decomposition and acid catalyzed dehydration at the temperature range of 120‐190 °C. Catalyst free aqueous media demonstrated enhanced formation of furanics, while elevated temperatures led to significant saccharide isomerization. The introduction of sulfuric and formic acids maximized furfural yield and significantly reduced HMF concentration by facilitating its rehydration into levulinic acid (46 mol%). Formic acid additionally substantially enhanced formation of anhydrosaccharides. An excellent correlation between modeled and experimental data enabled process optimization to maximize furanic yield in two distinct hemicellulose streams. Sulfuric acid‐containing hemicellulose stream achieved the highest furfural yield after 30 minutes at 238 °C, primarily due to the high Ea for pentose dehydration (150 – 160 kJmol−1). Contrarily, formic acid‐containing hemicellulose stream enabled maximal furfural yield at more moderate temperature and extended reaction time due to its lower Ea for the same reaction step (115 – 125 kJmol−1).

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Organosolv biorefinery: resource-based process optimisation, pilot technology scale-up and economics

Abstract: Organosolv process: from biomass to sustainable products.

Cited by 13 publications

References 124 publications

Biobased Vanillin Production by Oxidative Depolymerization of Kraft Lignin on a Nitrogen- and Phosphorus-Functionalized Activated Carbon Catalyst

Biobased Vanillin Production by Oxidative Depolymerization of Kraft Lignin on a Nitrogen- and Phosphorus-Functionalized Activated Carbon Catalyst

Carbonic anhydrase assisted acidogenic fermentation of forest residues for low carbon hydrogen and volatile fatty acid production: enhancedin situCO₂reduction and microbiological analysis

Model‐Assisted Optimization of Xylose, Arabinose, Glucose, Mannose, Galactose and Real Hemicellulose Streams Dehydration To (Hydroxymethyl)Furfural and Levulinic Acid

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Organosolv biorefinery: resource-based process optimisation, pilot technology scale-up and economics

Abstract: Organosolv process: from biomass to sustainable products.

Cited by 13 publications

References 124 publications

Biobased Vanillin Production by Oxidative Depolymerization of Kraft Lignin on a Nitrogen- and Phosphorus-Functionalized Activated Carbon Catalyst

Biobased Vanillin Production by Oxidative Depolymerization of Kraft Lignin on a Nitrogen- and Phosphorus-Functionalized Activated Carbon Catalyst

Carbonic anhydrase assisted acidogenic fermentation of forest residues for low carbon hydrogen and volatile fatty acid production: enhancedin situCO2reduction and microbiological analysis

Model‐Assisted Optimization of Xylose, Arabinose, Glucose, Mannose, Galactose and Real Hemicellulose Streams Dehydration To (Hydroxymethyl)Furfural and Levulinic Acid

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Carbonic anhydrase assisted acidogenic fermentation of forest residues for low carbon hydrogen and volatile fatty acid production: enhancedin situCO₂reduction and microbiological analysis