Lignin fate and characterization during ionic liquid biomass pretreatment for renewable chemicals and fuels production

2014 ◽  
Vol 16 (3) ◽  
pp. 1236-1247 ◽  
Author(s):  
Noppadon Sathitsuksanoh ◽  
Kevin M. Holtman ◽  
Daniel J. Yelle ◽  
Trevor Morgan ◽  
Vitalie Stavila ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Enzymatic Hydrolysis ◽  
Wheat Straw ◽  
Loblolly Pine ◽  
Biomass Pretreatment ◽  
Renewable Chemicals

The fate of lignin from wheat straw, Miscanthus, and Loblolly pine after pretreatment by a non-toxic and recyclable ionic liquid (IL), [C2mim][OAc], followed by enzymatic hydrolysis was investigated.

scholarly journals The Effect of Chemical Character of Ionic Liquids on Biomass Pre-Treatment and Posterior Enzymatic Hydrolysis

2019 ◽  
Author(s):  
Joana R. Bernardo ◽  
Francisco M. Girio ◽  
Rafal Lukasik
Keyword(s):  
Hydrogen Bond ◽  
Ionic Liquid ◽  
Ionic Liquids ◽  
Enzymatic Hydrolysis ◽  
Wheat Straw ◽  
Crystalline Cellulose ◽  
Hydrogen Sulfate ◽  
Fractionation Process ◽  
Chemical Character ◽  
Pre Treatment

Ionic liquids have been recognised as interesting solvents applicable in the efficient lignocellulosic biomass valorisation, especially in the biomass fractionation into individual polymeric components or direct hydrolysis some of biomass fractions. Considering the chemical character of ionic liquids, two different approaches, paved the way for a fractionation of biomass. The first strategy integrated a pre-treatment, hydrolysis and conversion of biomass through the employment of hydrogen-bond acidic 1-ethyl-3-methyimidazolim hydrogen sulfate ionic liquid. The second one relied on the use of a three-step fractionation process with hydrogen-bond basic 1-ethyl-3-methylimidazolium acetate to produce high purity cellulose, hemicellulose and lignin fractions. The proposed approaches were scrutinised for wheat straw and eucalyptus residues. Those different biomasses allowed understanding that enzymatic hydrolysis yields are dependent on the crystallinity of pre-treated biomass. The use of acetate based ionic liquid allowed to change crystalline cellulose I to cellulose II and consequently enhanced glucan to glucose yield to 93.14.1 mol% and 82.91.2 mol% for wheat straw and eucalyptus, respectively. Whereas for hydrogen sulfate ionic liquid, the same enzymatic hydrolysis yields were 61.6  0.2 mol% for wheat straw and only 7.90.3 mol% for eucalyptus residues. These results demonstrate the importance of either ionic liquid character or biomass type on the efficient biomass processing.

scholarly journals The Effect of the Chemical Character of Ionic Liquids on Biomass Pre-Treatment and Posterior Enzymatic Hydrolysis

Molecules ◽  
2019 ◽  
Vol 24 (4) ◽  
pp. 808 ◽  
Author(s):  
Joana Bernardo ◽  
Francisco Gírio ◽  
Rafał Łukasik
Keyword(s):  
Hydrogen Bond ◽  
Ionic Liquid ◽  
Ionic Liquids ◽  
Enzymatic Hydrolysis ◽  
Wheat Straw ◽  
Crystalline Cellulose ◽  
Fractionation Process ◽  
Hydrogen Sulphate ◽  
Chemical Character ◽  
Pre Treatment

Ionic liquids have been recognised as interesting solvents applicable in efficient lignocellulosic biomass valorisation, especially in biomass fractionation into individual polymeric components or direct hydrolysis of some biomass fractions. Considering the chemical character of ionic liquids, two different approaches paved the way for the fractionation of biomass. The first strategy integrated a pre-treatment, hydrolysis and conversion of biomass through the employment of hydrogen-bond acidic 1-ethyl-3-methyimidazolim hydrogen sulphate ionic liquid. The second strategy relied on the use of a three-step fractionation process with hydrogen-bond basic 1-ethyl-3-methylimidazolium acetate to produce high purity cellulose, hemicellulose and lignin fractions. The proposed approaches were scrutinised for wheat straw and eucalyptus residues. These different biomasses enabled an understanding that enzymatic hydrolysis yields are dependent on the crystallinity of the pre-treated biomass. The use of acetate based ionic liquid allowed crystalline cellulose I to change to cellulose II and consequently enhanced the glucan to glucose yield to 93.1 ± 4.1 mol% and 82.9 ± 1.2 mol% for wheat straw and eucalyptus, respectively. However, for hydrogen sulphate ionic liquid, the same enzymatic hydrolysis yields were 61.6 ± 0.2 mol% for wheat straw and only 7.9 ± 0.3 mol% for eucalyptus residues. These results demonstrate the importance of both ionic liquid character and biomass type for efficient biomass processing.

scholarly journals Enzymatic hydrolysis of lignocellulosic polysaccharides in the presence of ionic liquids

2015 ◽  
Vol 17 (2) ◽  
pp. 694-714 ◽  
Author(s):  
R. M. Wahlström ◽  
A. Suurnäkki
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Enzymatic Hydrolysis ◽  
Recent Progress ◽  
Biomass Pretreatment ◽  
Enzymatic Systems ◽  
Hydrolysis Of

This article reviews the recent progress in designing compatible ionic liquid–enzymatic systems for biomass pretreatment and hydrolysis as a step in the production of biofuels and -chemicals from lignocellulosic polysaccharides.

Ionic Liquid 1-Ethyl-3-Methylpyridinium Diethyl Phosphate Pretreatment of Mulberry Residue

2012 ◽  
Vol 253-255 ◽  
pp. 777-780 ◽  
Author(s):  
Qiang Li ◽  
Xu Ding Gu ◽  
Geng Sheng Ji ◽  
Juan Juan Fei ◽  
Yuan Yuan Feng ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Enzymatic Hydrolysis ◽  
Cellulosic Biomass ◽  
Biomass Pretreatment ◽  
Diethyl Phosphate ◽  
In Situ Processing ◽  
Mild Temperature ◽  
Short Time ◽  
Hydrolysis Of

The IL 1-ethyl-3-methylpyridinium diethyl phosphate ([EPyM][EMP]) and 1-ethyl-3-methylimidazolium acetate ([EMIM]OAc) were compared in view of thier superority in pretreatment toward accelerating enzymatic hydrolysis of cellulosic biomass, and they could be recyclable. Efficient ionic liquid pretreatments of cellulose can be obtained with short duration times (20 min) at 50-120 °C with [EPyM][EMP] and [EMIM]OAc. And [EPyM][EMP] showed preferable cellulosic biomass pretreatment capability. The short time and mild temperature of cellulose solubilization allowed a in situ processing of [EPyM][EMP] IL-pretreatment and saccharification.

Improving enzymatic hydrolysis of wheat straw using ionic liquid 1-ethyl-3-methyl imidazolium diethyl phosphate pretreatment

2009 ◽  
Vol 100 (14) ◽  
pp. 3570-3575 ◽  
Author(s):  
Qiang Li ◽  
Yu-Cai He ◽  
Mo Xian ◽  
Gao Jun ◽  
Xin Xu ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Enzymatic Hydrolysis ◽  
Wheat Straw ◽  
Diethyl Phosphate ◽  
Hydrolysis Of

Pretreatment of wheat straw by supercritical CO2 and its enzymatic hydrolysis for sugar production

2010 ◽  
Vol 107 (1) ◽  
pp. 61-66 ◽  
Author(s):  
Roozbeh Alinia ◽  
Samyar Zabihi ◽  
Feridun Esmaeilzadeh ◽  
Jamshid Fathi Kalajahi
Keyword(s):  
Enzymatic Hydrolysis ◽  
Wheat Straw ◽  
Supercritical Co2 ◽  
Sugar Production

Combination of dilute acid and ionic liquid pretreatments of sugarcane bagasse for glucose by enzymatic hydrolysis

2013 ◽  
Vol 48 (12) ◽  
pp. 1942-1946 ◽  
Author(s):  
Li-Qun Jiang ◽  
Zhen Fang ◽  
Xing-Kang Li ◽  
Jia Luo ◽  
Suet-Pin Fan
Keyword(s):  
Ionic Liquid ◽  
Enzymatic Hydrolysis ◽  
Sugarcane Bagasse ◽  
Dilute Acid
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