Optimization of fermentable sugar production from rape straw through hydrothermal acid pretreatment

Jeong, Tae Su; Oh, Kyeong Keun

doi:10.1016/j.biortech.2011.06.092

Cited by 30 publications

(10 citation statements)

References 11 publications

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“…The composition of raw material (expressed in g per 100 g whole raw material on oven‐dry basis ± standard deviation based on nine determinations) is shown in Table . This composition is in accordance with that reported by other authors . Total carbohydrate content is 58.3%, with glucose as main sugar.…”

Section: Resultssupporting

confidence: 93%

Experimental study on ethanol production from hydrothermal pretreated rapeseed straw by simultaneous saccharification and fermentation

López-Linares

Romero

Cara

et al. 2013

J of Chemical Tech & Biotech

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BACKGROUND: Rapeseed straw is an agricultural residue increasingly produced in recent years due to a growing interest in biodiesel production. In the present study, rapeseed straw pretreated by liquid hot water was tested as a substrate to optimize ethanol production by simultaneous saccharification and fermentation (SSF). Temperature, time, substrate loading and cellulase charge were selected as operation variables and modified according to a three-level four-variable experimental design. Ethanol concentration, ethanol yield and volumetric productivity were monitored and adjusted to a quadratic model using response surface methodology. RESULTS: Optimal SSF conditions, based on the mathematical model in terms of ethanol yield and concentration, were found to be 40 • C, 71 h, 10% substrate loading, and 40 FPU g −1 substrate. The resulting ethanol concentration was 23 g L −1 , which corresponds to 69% ethanol yield. CONCLUSION: Liquid hot water is an effective pretreatment that increased the cellulose concentration of rapeseed straw, making it a good substrate for SSF, with a maximum yield of 0.12 g ethanol g -1 dry straw. The novel combination of hydrothermal pretreatment and SSF configuration results in yields comparable yields with those previously reported, and has additional advantages, e.g. no chemicals use and high solid concentration operation.

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Section: Resultssupporting

confidence: 93%

Experimental study on ethanol production from hydrothermal pretreated rapeseed straw by simultaneous saccharification and fermentation

López-Linares

Romero

Cara

et al. 2013

J of Chemical Tech & Biotech

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“…Apart from the above-mentioned advantages, maleic acid is beneficial to cellulose degradation to glucose, not glucose hydrolysis ( Chen et al, 2017 ; Kumar and Sharma, 2017 ). Considering the environmental safety, although acid treatment is the most extensive technique on the industrial scale, less attention has been paid because of its drawbacks and limitations ( Mosier et al, 2005 ; Jeong and Oh, 2011 ).…”

Section: Acid Pretreatmentmentioning

confidence: 99%

Advances in Pretreatment of Straw Biomass for Sugar Production

Tan

et al. 2021

Front. Chem.

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Straw biomass is an inexpensive, sustainable, and abundant renewable feedstock for the production of valuable chemicals and biofuels, which can surmount the main drawbacks such as greenhouse gas emission and environmental pollution, aroused from the consumption of fossil fuels. It is rich in organic content but is not sufficient for extensive applications because of its natural recalcitrance. Therefore, suitable pretreatment is a prerequisite for the efficient production of fermentable sugars by enzymatic hydrolysis. Here, we provide an overview of various pretreatment methods to effectively separate the major components such as hemicellulose, cellulose, and lignin and enhance the accessibility and susceptibility of every single component. This review outlines the diverse approaches (e.g., chemical, physical, biological, and combined treatments) for the excellent conversion of straw biomass to fermentable sugars, summarizes the benefits and drawbacks of each pretreatment method, and proposes some investigation prospects for the future pretreatments.

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“…Biomass, composed of cellulose, hemicellulose and lignin, can be used to produce many derivatives, such as xylose , glucose , arabinose , glycerol , and triglycerides . Some derivatives, such as acetic acid , 5‐hydroxymethylfurfural , levulinic acid , and furfural play an important role in chemical industry, pharmaceutical and food industry.…”

Section: Introductionmentioning

confidence: 99%

Furfural production from corncobs using thiourea as additive

Zhang

et al. 2016

Env Prog and Sustain Energy

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Furfural production from the conversion of corncob was investigated using sulfuric acid as catalyst and thiourea as additive. The effects of acid concentration, temperature and thiourea on furfural yield were investigated. A furfural yield of 61.04% is achieved using thiourea as additive compared with 33.78% using H2SO4 alone without additive, under the optimum conditions of liquid–solid ratio of 2:1, temperature of 170°C and sulfuric acid of 0.5M. The effect of thiourea on furfural degradation rate was also evaluated. The reaction kinetic of furfural degradation shows that the activation energy is increased by 21.02% with thiourea as additive, which confirms that thiourea has effect on inhibiting the furfural degradation to some extent. © 2016 American Institute of Chemical Engineers Environ Prog, 36: 690–695, 2017

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Optimization of fermentable sugar production from rape straw through hydrothermal acid pretreatment

Cited by 30 publications

References 11 publications

Experimental study on ethanol production from hydrothermal pretreated rapeseed straw by simultaneous saccharification and fermentation

Experimental study on ethanol production from hydrothermal pretreated rapeseed straw by simultaneous saccharification and fermentation

Advances in Pretreatment of Straw Biomass for Sugar Production

Furfural production from corncobs using thiourea as additive

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