The effect of hemicelluloses and lignin on acid hydrolysis of cellulose

Yoon, Su-Young; Han, Sim-Hee; Shin, Soo‐Jeong

doi:10.1016/j.energy.2014.01.104

Cited by 112 publications

(61 citation statements)

References 30 publications

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“…Lignin content is one of the most influential factors that limits the hydrolysis. But cellulose is made of glucose subunits which linked each other via b-1,4-glycosidic bonds and they can hydrolyse much easier into fermentable sugars [45,46]. However, the interaction between lignin, cellulose and hemicellulose in SCWG is not clearly specified.…”

Section: Cge (%þ ¼ Carbon In Gas Phasementioning

confidence: 99%

Hydrothermal gasification of different agricultural wastes in supercritical water media for hydrogen production: a comparative study

et al. 2016

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Conversion of different agricultural residues including almond shell, walnut shell, barley straw, canola stalk, rice straw and wheat straw to hydrogen-rich gas was performed via gasification in supercritical water media in a determined condition. Elemental characterization was performed using CHNSO analyzer. Besides, cellulose and lignin contents in biomass structure were determined according to TAPPI test methods T264cm-97 and T222om-02, respectively. The correlations between the yields of the product gas components with C/H/O ratio in the initial forms of used feedstocks were investigated. In addition, the relation between the components of biomass structure with the yields of main gaseous products was also studied for each feedstock. The maximum hydrogen yield of 8.38 mmol/g was observed for barley straw which has the highest H percentage of 6.5 wt%. Canola stalk with the highest C/H ratio showed the highest total gas yield of 25.3 mmol/g. Canola stalk with highest amount of cellulose and hemicellulose of 67.42 % had the highest CGE of 45 % and barley straw had the highest HGE of 20 %. Higher C/H value and lower oxygen percentage in the initial form of feedstocks resulted in higher total gas and CO 2 yields and lower hydrogen yields. Lignin content in the initial form of the feedstocks was inversely proportional with total gas yields whereas cellulose content showed a straight relation with the total gas yield.

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Section: Cge (%þ ¼ Carbon In Gas Phasementioning

confidence: 99%

Hydrothermal gasification of different agricultural wastes in supercritical water media for hydrogen production: a comparative study

et al. 2016

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“…However, most methods for recovering the disaccharides from the resources have used chemical hydrolysis methods such as organic solvents, alkaline and acid chemicals, and some halide additives as the chemical modification processes. [4][5][6] These chemical processes produce a great deal of chemical waste and entail high clean-up costs after their use. In addition, monosaccharides generated at low pH and high temperature are not stable and can undergo further reactions that convert them to organic acids.…”

Section: Introductionmentioning

confidence: 99%

Degradation of disaccharides containing two glucose units in subcritical water

Wiboonsirikul

Nakata

Kobayashi

et al. 2015

Asia-Pacific J Chem Eng

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Disaccharides containing two glucose units, including trehalose, cellobiose, maltose, gentiobiose, and isomaltose, were hydrolyzed in a single-component system using subcritical water at 200-240°C and 10 MPa. A mixture of maltose and trehalose was also hydrolyzed in a binary-component system using subcritical water at 210 and 230°C. The fraction of the remaining disaccharides decreased as a function of the residence time and could be expressed by the Weilbull equation at any temperature. While trehalose showed the highest resistance to hydrolysis, the other disaccharides were much less resistant to hydrolysis and their reaction rates were not much different from each other. The mixture of trehalose and maltose exhibited a reduced resistance to the hydrolysis of trehalose at high hydrolysis temperatures. In addition, glucose, which was the product of the hydrolysis, can be easily subjected to further degradation to organic acids and consequently reduces the pH of the effluent.

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“…Thermal hydrolysis of several lignocellulosic materials has been reported at various temperature (T) ranges (180 to 250 °C) and pressure (P) of approximately 10,000 kPa (Prado et al 2014;Sukhbaatar et al 2014;Zhang and Wu 2014). Nevertheless, it is evident that the glucose yield achieved not only depends on the reaction conditions but also on the biomass source because of the variable chemical compositions (Yoon et al 2014).…”

Section: Introductionmentioning

confidence: 99%

Thermal Hydrolysis of Orange Peel and its Fermentation with Alginate Beads to Produce Ethanol

Vázquez¹,

Roa-Morales²,

Natividad³

et al. 2017

BioResources

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Orange peel (OP) was subjected to thermal hydrolysis at temperature (T) and pressure (P) values lower than 180 °C and 1000 kPa, respectively, to minimize the energy consumption and obtain a good ethanol yield. The process was conducted in an autoclave, a pressurized reactor for studying the effect of T (120 to 180 °C), P (500 to 1000 kPa), gas type (N2 or CO2), and OP loading (2.5 x10 -2 and 5 x10 -2 gmL -1 ) on the reducing sugars yield. The results were compared with those from acid hydrolysis. Hydrolysates were fermented using immobilized yeast on alginate beads, and the highest ethanol yield of 33.14 g/L was obtained from OP treated at 120 °C. Under these conditions, a minimum of 1,407 kWh energy consumption was achieved.

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The effect of hemicelluloses and lignin on acid hydrolysis of cellulose

Cited by 112 publications

References 30 publications

Hydrothermal gasification of different agricultural wastes in supercritical water media for hydrogen production: a comparative study

Hydrothermal gasification of different agricultural wastes in supercritical water media for hydrogen production: a comparative study

Degradation of disaccharides containing two glucose units in subcritical water

Thermal Hydrolysis of Orange Peel and its Fermentation with Alginate Beads to Produce Ethanol

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