Typical conversion of lignocellulosic biomass into reducing sugars using dilute acid hydrolysis and alkaline pretreatment

Loow, Yu Loong; Wu, Ta Yeong; Jahim, Jamaliah Md; Mohammad, Abdul Wahab; Teoh, Wen Hui

doi:10.1007/s10570-016-0936-8

Cited by 284 publications

(137 citation statements)

References 123 publications

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“…Acid-catalyzed hydrolysis, one of the chemical methods for depolymerization, has been viewed as the most efficient approach for lignocellulosic degradation. Acid hydrolysis can be carried out with mineral and organic acids in the form of free or solid state (Hara et al 2015;Loow et al 2016). The application of a carbonbased solid acid (CSA) catalyst to hydrolyze the substrate has received wide attention because of its low cost, limited equipment corrosion, high reactivity, and stability .…”

Section: Introductionmentioning

confidence: 99%

Hydrolysis of Corncob Using a Modified Carbon-based Solid Acid Catalyst

Xu¹,

Li²,

Zhang³

et al. 2016

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Lignocellulosic biomass is a very important renewable resource that can be used to produce biofuels and various platform chemicals. The conversion of biomass to reducing sugars is an important intermediate step that can impact the economic benefits of the process. Modified carbon-based solid acid is a novel catalyst used in the hydrolysis process of lignocellulosic materials. The catalyst material was prepared through the incomplete carbonization and subsequent sulfonation of a mixture of glucose and p-toluenesulfonic acid, followed by oxidation using 30% H2O2 to promote the acidity. The hydrolysis efficiency of the solid acid catalyst thus prepared was considerably increased. The effects of the carbonization temperature, time, and the glucose/p-toluene-sulfonic acid ratio on catalytic efficiency were investigated in this study. Under the appropriate preparation conditions, the catalyst could hydrolyze corncob to produce 78% xylose. The activity of the catalyst slightly declined after five cycles of application.

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Section: Introductionmentioning

confidence: 99%

Hydrolysis of Corncob Using a Modified Carbon-based Solid Acid Catalyst

Xu¹,

Li²,

Zhang³

et al. 2016

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“…In this work, alkaline treatment was selected for the fractionation of the lignocellulosic materials, as NaOH is commonly used to remove lignin from lignocellulosic materials (Stoklosa and Hodge 2015;Loow et al 2016b). The extraction conditions (acid pretreatment, temperature, time, and NaOH concentration) were optimized by a chemiometric approach in terms of the lignin yield.…”

Section: Introductionmentioning

confidence: 99%

Valorization of Side-Streams from a SSF Biorefinery Plant: Wheat Straw Lignin Purification Study

Zoia¹,

Salanti²,

Tolppa³

et al. 2017

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The lignocellulosic materials produced after each step of a biorefinery plant using simultaneous saccharification and fermentation (SSF) technology on wheat straw (Triticum spp.) for bioethanol production were characterized by spectroscopic and chromatographic techniques in order to investigate the macromolecular interactions between the lignin and polysaccharides. In order to valorize the lignin cakes, a purification step was set up and the extraction conditions (acid pretreatment, temperature, time, and NaOH concentration) were optimized by a chemiometric approach in terms of yield and purity. Residual carbohydrate impurities, free and/or chemically bonded to lignin (lignin carbohydrates complexes), were individuate as the most critical factor for a satisfactory lignin extraction. Finally, the lignin samples collected according to the optimized extraction conditions were chemically characterized and low molecular weight, high phenols concentration, and low carboxylic acids content were recognized as interesting features for industrial applications.

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“…12 In order to overcome the recalcitrance and alter the structural hindrance of LCB for effective digestibility and component utilisation, a pretreatment stage is often required. 13,14 The feasibility of LCB as feedstock for xylitol production has been explored worldwide depending on the availability of this biomass and the hydrolysis treatment applied. In Malaysia, the generation of oil palm plantation is estimated to be around 73.74 million tonnes of biomass annually and OPF is the most abundant biomass in the oil palm plantation.…”

Section: Introductionmentioning

confidence: 99%

“…24 During acid hydrolysis, sugars can be degraded to furfural which is formed from pentoses as a result from severe condition of high temperature. 13,25 Acetic acid is liberated upon solubilisation and hydrolysis of hemicellulose of the acetyl groups in the hemicellulose. 26 Those compounds are being categorised as having pronounced toxicity towards microorganisms.…”

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confidence: 99%