Hydrothermal Pretreatment Conditions to Enhance Ethanol Production from Poplar Biomass

Negro, M.J.; Manzanares, Paloma; Ballesteros, Ignacio; Oliva, J.; Cabañas, Araceli; Ballesteros, Mercedes

doi:10.1385/abab:105:1-3:87

Cited by 164 publications

(70 citation statements)

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“…LHW pretreatment, whose most important parameters are the biomass moisture content, the operation temperature, and the residence time [29], is usually done in a pressure tank reactor where two streams can be obtained after filtration of the biomass slurry: a solid, cellulose-enriched fraction and a liquid fraction rich in hemicellulose-derived sugars. The solid phase is therefore constituted by cellulose and lignin along with residual hemicellulose.…”

Section: Liquid Hot Water (Lhw) Pretreatmentsmentioning

confidence: 99%

Sugarcane and Woody Biomass Pretreatments for Ethanol Production

Silva¹,

Teixeira²,

Moutta³

et al. 2013

Sustainable Degradation of Lignocellulosic Biomass - Techniques, Applications and Commercialization

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Section: Liquid Hot Water (Lhw) Pretreatmentsmentioning

confidence: 99%

Sugarcane and Woody Biomass Pretreatments for Ethanol Production

Silva¹,

Teixeira²,

Moutta³

et al. 2013

Sustainable Degradation of Lignocellulosic Biomass - Techniques, Applications and Commercialization

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“…A number of lignocellulosic biomass were already examined as a potential feedstock for ethanol production [30][31][32][33][34]. In this study, prairie cord grass (PCG) was examined as a representative of the herbaceous energy crops.…”

mentioning

confidence: 99%

Hydrothermal Pretreatment of Lignocellulosic Biomass and Kinetics

Lei

Cybulska²,

Julson³

2013

JSBS

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The study focus was an examination of the hydrothermal pretreatment method applied to the lignocellulosic substrate, represented by the prairie cord grass, and comparison between different conditions based on the yield of glucose after enzymatic hydrolysis. The treatment did not involve any chemicals usage. Enzymatic hydrolysis was performed in order to examine the amount of glucose which was released from pretreated materials. The most efficient pretreatment conditions were at high temperature and relatively short reaction time (210˚C and 10 min), after which the lignocellulose structure was the most available for enzymes actions which resulted in a pretreatment conversion rate of 97%. Temperature had a significant influence on glucose release during the hydrolysis, which was confirmed by the Michaelis-Menten and kinetic models. Kinetic models were used to fit the inhibitors and their conversion rates were related to temperature.

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“…Pressure is utilized to maintain water in the liquid state at elevated temperatures (160-240 °C) and provoke alterations in the structure of the lignocelluloses [131][132][133]. LCF in LHW undergoes high temperature cooking in water with high pressure.…”

Section: Liquid Hot Water (Lhw) Fractionationmentioning

confidence: 99%

Lignocelluloses Feedstock Biorefinery as Petrorefinery Substitutes

Cheng¹,

Wang²

2013

Biomass Now - Sustainable Growth and Use

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Lignocelluloses Feedstock Biorefinery as Petrorefinery Substitutes 349The LCF Biorefinery is a promising alternative due to the abundance and variety of available raw materials and the good position of the conversion products on the market [14]. Its profitability is also dependent on the technology employed to alter the structure of lignocellulosic biomass in order to produce high value co-products from its three main fractions i.e. cellulose, hemicellulose, and lignin [15].Currently the main feedstock for biorefineries is still based on starch. The practiced technologies in fuel ethanol industry are primarily based on the fermentation of sugars derived from starch and sugar crops, which are quite mature with little possibility of process improvements. However, using starch and sugar crops to produce ethanol also has been questioned since it draws its feedstock from a food stream. Lignocellulosic biomass is a more promising renewable resource as it is available in large quantities and does not compete with food or feed. Lignocellulosic biomass is a renewable resource that stores energy from sunlight in its chemical bonds, with great potentials for the production of affordable fuel ethanol [16,17]. Its main obstacle for a major breakthrough is the high production costs for bioenergy products.On the other hand, lignocellulosic biomass-derived products can significantly reduce green house gas emissions, compared to fossil-based products. Also, many common petrochemicals could be obtained with lower green house gas emissions from bio-based feedstocks. The maturity and economics of the conversion processes and logistics is a major challenge for lignocellulosic biomass [18].

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Hydrothermal Pretreatment Conditions to Enhance Ethanol Production from Poplar Biomass

Cited by 164 publications

References 0 publications

Sugarcane and Woody Biomass Pretreatments for Ethanol Production

Sugarcane and Woody Biomass Pretreatments for Ethanol Production

Hydrothermal Pretreatment of Lignocellulosic Biomass and Kinetics

Lignocelluloses Feedstock Biorefinery as Petrorefinery Substitutes

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