Comparison of dilute mineral and organic acid pretreatment for enzymatic hydrolysis of wheat straw

Kootstra, A.M.J.; Beeftink, H.H.; Scott, Elinor L.; Sanders, J.P.M.

doi:10.1016/j.bej.2009.04.020

Cited by 317 publications

(142 citation statements)

References 36 publications

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“…The high temperature increases the rates of www.intechopen.com hemicellulose sugars decomposition thus causing the formation of toxic compounds such as furfural and 5-hydroxymethyl-furfural (HMF). These compounds inhibit yeast cells and the subsequent fermentation stage, causing a lower ethanol production rate (Larsson et al, 1999;kootstra et al, 2009). In addition, these compounds lead to reduction of fermentable sugars (Kootstra et al, 2009).…”

Section: Acid Hydrolysismentioning

confidence: 99%

“…These compounds inhibit yeast cells and the subsequent fermentation stage, causing a lower ethanol production rate (Larsson et al, 1999;kootstra et al, 2009). In addition, these compounds lead to reduction of fermentable sugars (Kootstra et al, 2009). In addition, high temperatures increase the equipment corrosion (Jones & Semrau, 1984).…”

Section: Acid Hydrolysismentioning

confidence: 99%

See 1 more Smart Citation

Hydrolysis of Lignocellulosic Biomass: Current Status of Processes and Technologies and Future Perspectives

Verardi¹,

De²,

Ricca³

et al. 2012

Bioethanol

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Section: Acid Hydrolysismentioning

confidence: 99%

Section: Acid Hydrolysismentioning

confidence: 99%

Hydrolysis of Lignocellulosic Biomass: Current Status of Processes and Technologies and Future Perspectives

Verardi¹,

De²,

Ricca³

et al. 2012

Bioethanol

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“…Acetic acid has also been used as a pre-hydrolysis reagent, which is regarded as an environmentally friendly way to obtain cellulose pulps from lignocellulosic materials. Compared with dilute inorganic acid, it has some desirable advantages, including effective hydrolysis, fewer degradation products, and more oligomeric sugars (Kootstra et al 2009). …”

Section: Introductionmentioning

confidence: 99%

Improved Cellulose Yield in the Production of Dissolving Pulp from Bamboo Using Acetic Acid in Prehydrolysis

Li¹,

Fu²,

Zhou³

et al. 2014

BioResources

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Despite increasing demand for dissolving pulps from raw material, production costs remain quite high compared to regular paper pulp. Research literature to date has focused on improving performance and quality but has not simultaneously explored how to improve yield, which typically falls below 35%. Dissolving pulp from bamboo, as a widely available, high-quality raw material, was investigated with dilute acetic acid pre-hydrolysis before cooking and cold caustic extraction prior to bleaching. It was found that dilute acetic acid in the pre-hydrolysis stage could speed up the degradation of hemicellulose in bamboo and improve the diffusion of the cooking liquor in bamboo fiber compared with hot-water treatment. The dissolving pulp from bamboo was produced with 93% α-cellulose, 90% ISO brightness, 959 mL/g viscosity, 5.23% xylans, and 0.17% ash. The overall yield on the basis of raw material was 37%, which was higher than other documented processes using other agents in prehydrolysis.

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“…As shown in Fig. 1(a), the spectral intensity of characteristic function groups at 1730 cm -1 of C=O in xylan decreased (Kootstra et al 2009), while the spectral intensity at 1460 cm -1 of the CH2 in-plane bending vibration increased for the pretreated sample (Kumar et al 2009). This indicates that the LCC and C=O bonds of xylan in hybrid Pennisetum were destroyed after the [Amim]Cl pretreatment (He et al 2008).…”

Section: Changes In Microstructure Of Cellulose Of Hybrid Pennisetummentioning

confidence: 98%

Microstructure Properties and Cellulase Hydrolysis Efficiency of Hybrid Pennisetum with [Amim]Cl Pretreatment

et al. 2016

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The complex microstructure of lignocellulosic biomass restricts its conversion into bio-ethanol. In this study, the effects of an ionic liquid (IL) 1-allyl-3-methylimidazolium chloride ([Amim]Cl) pretreatment on the microstructure properties and cellulase hydrolysis efficiency of hybrid Pennisetum (P. americanum × P. purpureum, lignocellulosic biomass) were investigated. After the [Amim]Cl pretreatment, the bonds of lignincarbohydrate complex (LCC) and C=O in xylan were destroyed and the content of inter-molecular H-bonds O(6)H…O(3') decreased by 47.2%, while the content of intra-molecular H-bonds of O(2)H…O(6) and O(3)H…O(5) increased by 9.5% and 47.0%, respectively. The crystallinity and the crystallite size decreased by 20.8% and 42.22%, respectively, and the cellulose crystalline structure changed from cellulose crystalline I to cellulose crystalline II. The specific surface area increased from 0.15 to 10.11 m 2 /g after the [Amim]Cl pretreatment. The glucose recovery increased by 10.3 times after being pretreated with [Amim]Cl, compared with the unpretreated sample.

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Comparison of dilute mineral and organic acid pretreatment for enzymatic hydrolysis of wheat straw

Cited by 317 publications

References 36 publications

Hydrolysis of Lignocellulosic Biomass: Current Status of Processes and Technologies and Future Perspectives

Hydrolysis of Lignocellulosic Biomass: Current Status of Processes and Technologies and Future Perspectives

Improved Cellulose Yield in the Production of Dissolving Pulp from Bamboo Using Acetic Acid in Prehydrolysis

Microstructure Properties and Cellulase Hydrolysis Efficiency of Hybrid Pennisetum with [Amim]Cl Pretreatment

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