Enzymatic hydrolysis enhancement of corn lignocellulose by supercritical CO2 combined with ultrasound pretreatment

Yin, Jinling; Hao, Liudan; Yu, Wei; Wang, Enjun; Zhao, Meng-Jiao; Xu, Qin; Liu, Yifan

doi:10.1016/s1872-2067(14)60040-1

Cited by 54 publications

(23 citation statements)

References 19 publications

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“…On the other hand, the impurities in the raw biomass, in particular calcium cations, poisoned the active tungsten species possibly by forming insoluble calcium tungstate [24]. Therefore, both lignin and poisoning impurities have to be removed prior to the catalytic reaction, for which various pretreatment technologies have been explored [10,[27][28][29][30]. Interestingly, a recent work by Miao et al showed that microalgae (Chlorococcum sp.)…”

Section: Introductionmentioning

confidence: 99%

Remarkable effect of extremely dilute H2SO4 on the cellulose conversion to ethylene glycol

Xu¹,

Wang²,

Pang³

et al. 2015

Applied Catalysis A: General

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Section: Introductionmentioning

confidence: 99%

Remarkable effect of extremely dilute H2SO4 on the cellulose conversion to ethylene glycol

Xu¹,

Wang²,

Pang³

et al. 2015

Applied Catalysis A: General

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“…Different from steam explosion pretreatment which destroys the cell wall of biomass , LHW pretreatment uses hydronium ions generated in situ to dissolve most of hemicellulose and a part of lignin, to make the cellulose more accessible to the enzymatic hydrolysis. The enzyme hydrolysis sugar yield (cellulose‐derived reducing sugar yield) and total sugar yield (hemicellulose and cellulose‐derived reducing sugar yield) are shown in Figure .…”

Section: Resultsmentioning

confidence: 99%

Enhancing enzyme hydrolysis of Sorghum stalk by CO₂‐pressurized liquid hot water pretreatment

Zhao

Zhen

et al. 2016

Env Prog and Sustain Energy

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CO2‐pressurized liquid hot water was applied to pretreat Sorghum stalk to increase its accessibility for enzyme hydrolysis. Pretreatment temperatures tested ranged from 180 to 220°C, and reaction times varied between 10 and 30 min. The highest total reducing sugar yield of 81.54% was obtained for the sample pretreated at 200°C and 20 min. Different from the N2‐pressurized liquid hot water process, the generated carbonic acid in the CO2‐pressurized method acted as catalyst in the pretreatment process. It was found that the reducing sugar yield increased significantly at lower temperature and shorter reaction time with the addition of CO2. Finally, X‐ray diffraction and scanning electron microscope analysis were used to investigate the microstructure of the Sorghum stalk before and after the pretreatment. © 2016 American Institute of Chemical Engineers Environ Prog, 36: 208–213, 2017

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“…The use of ultrasound followed by scCO 2 was investigated by Yin et al (2014) for the pretreatment of corn stalks and corn cobs. When scCO 2 was carried out alone at 120-170 • C and 150-250 bar for 30 min, followed by rapid depressurization, the use of high temperatures and intermediate pressures (200 bar) had a positive effect on pretreatment efficiency.…”

Section: Supercritical Co 2 Pretreatmentmentioning

confidence: 99%

Supercritical Fluids: A Promising Technique for Biomass Pretreatment and Fractionation

Escobar

Silva

Pirich

et al. 2020

Front. Bioeng. Biotechnol.

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Lignocellulosic biomasses are primarily composed of cellulose, hemicelluloses and lignin and these biopolymers are bonded together in a heterogeneous matrix that is highly recalcitrant to chemical or biological conversion processes. Thus, an efficient pretreatment technique must be selected and applied to this type of biomass in order to facilitate its utilization in biorefineries. Classical pretreatment methods tend to operate under severe conditions, leading to sugar losses by dehydration and to the release of inhibitory compounds such as furfural (2-furaldehyde), 5-hydroxy-2-methylfurfural (5-HMF), and organic acids. By contrast, supercritical fluids can pretreat lignocellulosic materials under relatively mild pretreatment conditions, resulting in high sugar yields, low production of fermentation inhibitors and high susceptibilities to enzymatic hydrolysis while reducing the consumption of chemicals, including solvents, reagents, and catalysts. This work presents a review of biomass pretreatment technologies, aiming to deliver a state-of-art compilation of methods and results with emphasis on supercritical processes.

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Enzymatic hydrolysis enhancement of corn lignocellulose by supercritical CO2 combined with ultrasound pretreatment

Cited by 54 publications

References 19 publications

Remarkable effect of extremely dilute H2SO4 on the cellulose conversion to ethylene glycol

Remarkable effect of extremely dilute H2SO4 on the cellulose conversion to ethylene glycol

Enhancing enzyme hydrolysis of Sorghum stalk by CO₂‐pressurized liquid hot water pretreatment

Supercritical Fluids: A Promising Technique for Biomass Pretreatment and Fractionation

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Enzymatic hydrolysis enhancement of corn lignocellulose by supercritical CO2 combined with ultrasound pretreatment

Cited by 54 publications

References 19 publications

Remarkable effect of extremely dilute H2SO4 on the cellulose conversion to ethylene glycol

Remarkable effect of extremely dilute H2SO4 on the cellulose conversion to ethylene glycol

Enhancing enzyme hydrolysis of Sorghum stalk by CO2‐pressurized liquid hot water pretreatment

Supercritical Fluids: A Promising Technique for Biomass Pretreatment and Fractionation

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Product

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Enhancing enzyme hydrolysis of Sorghum stalk by CO₂‐pressurized liquid hot water pretreatment