Dilute-acid conversion of cotton straw to sugars and levulinic acid via 2-stage hydrolysis

Yang, Zhiguang; Kang, Haiyan; Guo, Yihang; Zhuang, Guoqiang; Bai, Zhihui; Zhang, Hongxun; Feng, Chunxiao; Dong, Yanhong

doi:10.1016/j.indcrop.2013.01.031

Cited by 70 publications

(33 citation statements)

References 19 publications

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“…[27] Closely related results were obtained by Rivas et al, [32] starting from pine hydrolyzates mainly composed of mannose. In related works, Szabolcs et al [33] reported LA yields in the range 44.0-48.6% from glucose, cellobiose, or cellulose in HCl media operating at 170 • C under microwave irradiation, whereas Yang et al [34] obtained LA from cotton straw at 31.1% yield operating in 0.2 M sulfuric acid at 180 • C for 30 min.…”

Section: Acidic Processing Of Wood Pulpmentioning

confidence: 99%

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

Rivas

Raspolli-Galletti

Antonetti

et al. 2015

Journal of Wood Chemistry and Technology

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The fractionation of the structural components of lignocellulosic biomass (cellulose, hemicelluloses, and lignin) and the separate utilization of the resulting fractions for specific purposes, according to the philosophy of biorefineries, enables the development of sustainable processes for biomass utilization. In this work, Pinus pinaster wood was subjected to aqueous processing to remove water-soluble extractives and hemicelluloses, and the resulting solid was subjected to pulping with HCl-catalyzed acetic acid solutions (Acetosolv method). The pulp was employed as a substrate for levulinic acid manufacture by reaction in acidic media under microwave irradiation. The effects of the major operational variables (temperature, reaction time, and acid concentration) on the levulinic acid yield were established by statistical modeling of experimental data. Operating under the best reaction conditions (at 191.2°C for 18.9 min in aqueous media containing 1.10% HCl), the levulinic acid yield accounted for 56.4% of the stoichiometric value

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Section: Acidic Processing Of Wood Pulpmentioning

confidence: 99%

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

Rivas

Raspolli-Galletti

Antonetti

et al. 2015

Journal of Wood Chemistry and Technology

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“…Because it is a branched short chain polymer, hemicellulose can easily be attacked by hydrogen ions to form oligo/mono sugars, acetic acid, and furfural during the pretreatment process (Yang et al 2013b;Zeng et al 2014). Lignin can also form soluble fragments or altered chemical structures through sulfonation and degradation reactions through sulfite or bisulfite ion attack.…”

Section: Effect Of Nahso3 and H2so4 Chargementioning

confidence: 99%

Sodium Hydrogen Sulfite Pretreatment of Wood Pulp Waste for Enhancement of Enzymatic Efficiency

Liu¹,

Wang²,

Yang³

et al. 2014

BioResources

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aWood pulp waste is a type of industrial waste that has an enormous potential for fermentable sugar production. Efficient pretreatment is the key for enhancing the enzymatic efficiency. In this paper, sodium hydrogen sulfite pretreatment was performed on wood pulp waste to improve enzyme performance through sulfonation and hydrolysis reactions. Results showed that the enzymatic efficiency was greatly enhanced from 5.12 to 41.6% in terms of reducing sugar yield (RSY) under the optimum conditions: 6% NaHSO3, 2500 P-factor, 3/1 liquid to solid ratio, and cellulase charge of 35 FPU/g substrate. Mass balance showed that approximately 73% of glucose was recovered. The mechanism of sulfonation and hydrolysis of sodium hydrogen sulfite pretreatment were confirmed by Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (X-RD), and scanning electron microscopy (SEM).

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“…Two-stage acidcatalyzed conversion of lignocelluloses into LA was developed to address this problem. 1,19 Pentose was extracted in the rst stage prior to LA production, which may improve LA yield. However, the additional stage increases the cost of LA production.…”

Section: Introductionmentioning

confidence: 99%

Integrated production of furfural and levulinic acid from corncob in a one-pot batch reaction incorporating distillation using step temperature profiling

Zhu

Gleisner

2017

RSC Adv.

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Furfural and levulinic acid (LA) are potential major renewable platform chemicals for producing biochemicals and biofuels. In this study, integrated conversion of corncob to furfural and LA was carried out in a one-pot system using p-toluenesulfonic acid (p-TsOH) and step temperature profiling. A batch reaction incorporating distillation (BRD) resulted in a good furfural production yield of 61.6% based on the corncob xylan content for the hydrolysis conditions tested. Distillation not only reduced furfural loss due to side reactions to humins, but also resulted in a fairly pure and concentrated furfural solution. At the end of the first distillation step, the reaction temperature was increased to convert hexoses into LA with a maximal production yield of 61.3 AE 7.8% based on corncob glucan content. LA was extracted with good yield as LA-ester using low-cost alcohols and then phase separated to recycle alcohols and pTsOH. Good recyclability and reusability of p-TsOH and alcohols were demonstrated.

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Dilute-acid conversion of cotton straw to sugars and levulinic acid via 2-stage hydrolysis

Cited by 70 publications

References 19 publications

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

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

Sodium Hydrogen Sulfite Pretreatment of Wood Pulp Waste for Enhancement of Enzymatic Efficiency

Integrated production of furfural and levulinic acid from corncob in a one-pot batch reaction incorporating distillation using step temperature profiling

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