Sustainable Production of Levulinic Acid from the Cellulosic Fraction of<i>Pinus Pinaster</i>Wood: Operation in Aqueous Media Under Microwave Irradiation

Rivas, Sandra; Raspolli-Galletti, Anna Maria; Antonetti, Claudia; Santos, Valentín; Parajó, Juan Carlos

doi:10.1080/02773813.2014.962152

Cited by 30 publications

(26 citation statements)

References 31 publications

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“…MW irradiation has been widely employed in the biomass field, especially as assisted tool for the feasible catalytic conversion of lignocellulosic materials to value added compounds [ 25 – 29 ]. When microwave irradiation is employed, thermal energy is generated through dielectric heating and it is rapidly transferred directly into the reactor without any contact between the energy source and the reaction mixture.…”

Section: Introductionmentioning

confidence: 99%

Autohydrolysis pretreatment of Arundo donax: a comparison between microwave-assisted batch and fast heating rate flow-through reaction systems

Galia

Schiavo

Antonetti

et al. 2015

Biotechnol Biofuels

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BackgroundAutohydrolysis of lignocellulosic biomass in liquid hot water has been widely studied owing to its high efficiency and relatively low cost. In the perspective of industrial applications, continuous or semi-continuous processes are more interesting than batch systems. Moreover, microwave heating of pretreatment systems has been proposed to intensify the kinetics of the process. In this study, the autohydrolysis of Arundo donax was performed in pure liquid hot water using a microwave-heated batch reactor and a semi-continuous flow-through reaction system with fast heating rate at the same operating conditions with the aim of performing a systematic comparison between the two different experimental apparatuses.ResultsThe effect of process temperature and time, biomass to water mass to volume ratio and water flow rate on the concentration and yield of hydrolysis products was investigated. The flow-through set-up allowed us to reach biomass solubilization up to 44.5 wt% on dry basis, while the batch system stopped at 34.5 wt% suggesting that the mass transfer could be the rate-determining step in the solubilization of the constituting biopolymers. For example, in the flow-through layout, using a flow rate of 3.5 mL/min at 200 °C with 20 min of processing time, quantitative recovery of hemicellulose was obtained with limited formation of degradation products. Interestingly, higher cellulose/hemicellulose extraction ratios were found using the microwave-assisted batch reactor. FTIR analyses of the solid residues recovered after the pretreatment offered independent information on the fractions of liquefied biopolymers complementary to those derived from HPLC and UV–Vis spectroscopy.ConclusionsCollected experimental results indicated that the flow-through system can be adopted to obtain complete solubilization of the hemicellulose fraction of Arundo donax addressing the product distribution in soluble compounds towards fermentable sugars with limited formation of sugar degradation products and with limited penalty in terms of dilution of the hydrolysate solution. It was also found that microwaves can promote cellulose depolymerization and solubilization, thus allowing a more comprehensive utilization of the biomass and that infrared spectroscopy can be a useful technique to estimate the effect of the pretreatment.

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Section: Introductionmentioning

confidence: 99%

Autohydrolysis pretreatment of Arundo donax: a comparison between microwave-assisted batch and fast heating rate flow-through reaction systems

Galia

Schiavo

Antonetti

et al. 2015

Biotechnol Biofuels

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“…When raw lignocellulosic feedstocks are used, mineral acids are the most widely employed catalysts [2,3,113,114]. Licursi et al used HCl in the conversion of giant reed to LA at 190 • C. After 1 h of reaction, LA yield of 24 wt % was reached (Experiment 47, Table 4) [97].…”

Section: Homogeneous Mineral Acids and Salts In Watermentioning

confidence: 99%

New Frontiers in the Catalytic Synthesis of Levulinic Acid: From Sugars to Raw and Waste Biomass as Starting Feedstock

et al. 2016

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Levulinic acid (LA) is one of the top bio-based platform molecules that can be converted into many valuable chemicals. It can be produced by acid catalysis from renewable resources, such as sugars, lignocellulosic biomass and waste materials, attractive candidates due to their abundance and environmentally benign nature. The LA transition from niche product to mass-produced chemical, however, requires its production from sustainable biomass feedstocks at low costs, adopting environment-friendly techniques. This review is an up-to-date discussion of the literature on the several catalytic systems that have been developed to produce LA from the different substrates. Special attention has been paid to the recent advancements on starting materials, moving from simple sugars to raw and waste biomasses. This aspect is of paramount importance from a sustainability point of view, transforming wastes needing to be disposed into starting materials for value-added products. This review also discusses the strategies to exploit the solid residues always obtained in the LA production processes, in order to attain a circular economy approach.

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“…Pine trees are evergreen conifers widely distributed in extensive geographic areas. Pinus pinaster , a major forest resource in France and the Iberian Peninsula, has been considered as a raw material for the production of bio-based chemicals in the scope of biorefineries [ 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 ]. As with other types of LB, the composition of Pinus pinaster wood is usually reported in terms of non-structural and structural components.…”

Section: Introductionmentioning

confidence: 99%

Manufacture of Platform Chemicals from Pine Wood Polysaccharides in Media Containing Acidic Ionic Liquids

et al. 2020

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Pinus pinaster wood samples were subjected to chemical processing for manufacturing furans and organic acids from the polysaccharide fractions (cellulose and hemicellulose). The operation was performed in a single reaction stage at 180 or 190 °C, using a microwave reactor. The reaction media contained wood, water, methyl isobutyl ketone, and an acidic ionic liquid, which acted as a catalyst. In media catalyzed with 1-butyl-3-methylimidazolium hydrogen sulfate, up to 60.5% pentosan conversion into furfural was achieved, but the conversions of cellulose and (galacto) glucomannan in levulinic acid were low. Improved results were achieved when AILs bearing a sulfonated alkyl chain were employed as catalysts. In media containing 1-(3-sulfopropyl)-3-methylimidazolium hydrogen sulfate as a catalyst, near quantitative conversion of pentosans into furfural was achieved at a short reaction time (7.5 min), together with 32.8% conversion of hexosans into levulinic acid. Longer reaction times improved the production of organic acids, but resulted in some furfural consumption. A similar reaction pattern was observed in experiments using 1-(3-sulfobutyl)-3-methylimidazolium hydrogen sulfate as a catalyst.

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Sustainable Production of Levulinic Acid from the Cellulosic Fraction ofPinus PinasterWood: Operation in Aqueous Media Under Microwave Irradiation

Cited by 30 publications

References 31 publications

Autohydrolysis pretreatment of Arundo donax: a comparison between microwave-assisted batch and fast heating rate flow-through reaction systems

Autohydrolysis pretreatment of Arundo donax: a comparison between microwave-assisted batch and fast heating rate flow-through reaction systems

New Frontiers in the Catalytic Synthesis of Levulinic Acid: From Sugars to Raw and Waste Biomass as Starting Feedstock

Manufacture of Platform Chemicals from Pine Wood Polysaccharides in Media Containing Acidic Ionic Liquids

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