Furfural production from birch hemicelluloses by two-step processing: a potential technology for biorefineries

Rivas, Sandra; Vila, Carlos; Santos, Valentín; Parajó, Juan Carlos

doi:10.1515/hf-2015-0255

Cited by 31 publications

(34 citation statements)

References 40 publications

(58 reference statements)

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“…These hemicellulosic hydrolysates have been used for the biotechnological production of biofuels as ethanol [25] and value-added building blocks (such as xylitol and lactic acid) [23,24]. In addition, these processes are also applied for the production of furan compounds and furan derivatives (such as levulinic acid and formic acid), which are receiving more attention for their interesting features as components of fuels [26,27].…”

Section: Introductionmentioning

confidence: 99%

Hemicellulosic Bioethanol Production from Fast-Growing Paulownia Biomass

Domínguez¹,

Río

Romaní

et al. 2021

Processes

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In order to exploit a fast-growing Paulownia hardwood as an energy crop, a xylose-enriched hydrolysate was obtained in this work to increase the ethanol concentration using the hemicellulosic fraction, besides the already widely studied cellulosic fraction. For that, Paulownia elongata x fortunei was submitted to autohydrolysis treatment (210 °C or S0 of 4.08) for the xylan solubilization, mainly as xylooligosaccharides. Afterwards, sequential stages of acid hydrolysis, concentration, and detoxification were evaluated to obtain fermentable sugars. Thus, detoxified and non-detoxified hydrolysates (diluted or not) were fermented for ethanol production using a natural xylose-consuming yeast, Scheffersomyces stipitis CECT 1922, and an industrial Saccharomyces cerevisiae MEC1133 strain, metabolic engineered strain with the xylose reductase/xylitol dehydrogenase pathway. Results from fermentation assays showed that the engineered S. cerevisiae strain produced up to 14.2 g/L of ethanol (corresponding to 0.33 g/g of ethanol yield) using the non-detoxified hydrolysate. Nevertheless, the yeast S. stipitis reached similar values of ethanol, but only in the detoxified hydrolysate. Hence, the fermentation data prove the suitability and robustness of the engineered strain to ferment non-detoxified liquor, and the appropriateness of detoxification of liquor for the use of less robust yeast. In addition, the success of hemicellulose-to-ethanol production obtained in this work shows the Paulownia biomass as a suitable renewable source for ethanol production following a suitable fractionation process within a biorefinery approach.

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Section: Introductionmentioning

confidence: 99%

Hemicellulosic Bioethanol Production from Fast-Growing Paulownia Biomass

Domínguez¹,

Río

Romaní

et al. 2021

Processes

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“…Preliminary modeling attempts of the reactions governing the consumption of X n , arabinosyl groups in solid phase (Ar n ), acetyl groups in solid phase (Ac n ), and the products derived from them were performed using models reported for single-stage autohydrolysis of diverse lignocellulosic materials, [4][5][6][9][10][11][12][13][14][15][16][17].…”

Section: Kinetic Modeling Of Multistage Operationmentioning

confidence: 99%

“…The industrial utilization of LCM can be accomplished using the biorefinery approach, which entails the selective separation of the polymeric components of LCM (cellulose, hemicelluloses and lignin) through "fractionation" treatments, and the further transformation of the resulting fractions into commercial products, taking into account the principles of green chemistry and circular economy [4].…”

Section: Introductionmentioning

confidence: 99%

Autocatalytic Fractionation of Wood Hemicelluloses: Modeling of Multistage Operation

2020

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Eucalyptus globulus wood samples were treated with hot, compressed water (autohydrolysis) in consecutive stages under non-isothermal conditions in order to convert the hemicellulose fraction into soluble compounds through reactions catalyzed by in situ generated acids. The first stage was a conventional autohydrolysis, and liquid phase obtained under conditions leading to an optimal recovery of soluble saccharides was employed in a new reaction (second crossflow stage) using a fresh wood lot, in order to increase the concentrations of soluble saccharides. In the third crossflow stage, the best liquid phase from the second stage was employed to solubilize the hemicelluloses from a fresh wood lot. The concentration profiles determined for the soluble saccharides, acids, and furans present in the liquid phases from the diverse crossflow stages were employed for kinetic modeling, based on pseudohomogeneous reactions and Arrhenius-type dependence of the kinetic coefficients on temperature. Additional characterization of the reaction products by High Pressure Size Exclusion Chromatography, High Performance Anion Exchange Chromatography with Pulsed Amperometric Detection, and Matrix Assisted Laser Desorption/Ionization Time of Flight Mass Spectrometry provided further insight on the properties of the soluble saccharides present in the various reaction media.

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“…It may also be produced from lignocellulosic biomass directly via acid catalyst treatment. Although this is a simple and mature process, it is characterized by several disadvantages including low furfural yield, generation of undesirable by-products, and difficulties in utilizing the remaining biomass, such as cellulose or lignin [11]. For this reason, many studies have proposed a two-step process in which hemicellulose is hydrolyzed into pentose or pentose-derived oligomers, and then the pentose or the oligomer is dehydrated into furfural in different reaction systems.…”

Section: Introductionmentioning

confidence: 99%

A Simultaneous Conversion and Extraction of Furfural from Pentose in Dilute Acid Hydrolysate of Quercus mongolica Using an Aqueous Biphasic System

et al. 2020

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This study optimizes furfural production from pentose released in the liquid hydrolysate of hardwood using an aqueous biphasic system. Dilute acid pretreatment with 4% sulfuric acid was conducted to extract pentose from liquid Quercus mongolica hydrolysate. To produce furfural from xylose, a xylose standard solution with the same acid concentration of the liquid hydrolysate and extracting solvent (tetrahydrofuran) were applied to the aqueous biphasic system. A response surface methodology was adopted to optimize furfural production in the aqueous biphasic system. A maximum furfural yield of 72.39% was achieved at optimal conditions as per the RSM; a reaction temperature of 170 °C, reaction time of 120 min, and a xylose concentration of 10 g/L. Tetrahydrofuran, toluene, and dimethyl sulfoxide were evaluated to understand the effects of the solvent on furfural production. Tetrahydrofuran generated the highest furfural yield, while DMSO gave the lowest yield. A furfural yield of 68.20% from pentose was achieved in the liquid hydrolysate of Quercus mongolica under optimal conditions using tetrahydrofuran as the extracting solvent. The aqueous and tetrahydrofuran fractions were separated from the aqueous biphasic solvent by salting out using sodium chloride, and 94.63% of the furfural produced was drawn out through two extractions using tetrahydrofuran.

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Furfural production from birch hemicelluloses by two-step processing: a potential technology for biorefineries

Cited by 31 publications

References 40 publications

Hemicellulosic Bioethanol Production from Fast-Growing Paulownia Biomass

Hemicellulosic Bioethanol Production from Fast-Growing Paulownia Biomass

Autocatalytic Fractionation of Wood Hemicelluloses: Modeling of Multistage Operation

A Simultaneous Conversion and Extraction of Furfural from Pentose in Dilute Acid Hydrolysate of Quercus mongolica Using an Aqueous Biphasic System

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