Extrusion process to enhance the pretreatment effect of ionic liquid for improving enzymatic hydrolysis of lignocellulosic biomass

Han, Sang‐Ik; Park, Chanwoo; Endo, Takashi; Febrianto, Fauzi; Kim, Nam Hun; Lee, Seung Hwan

doi:10.1007/s00226-020-01170-9

Cited by 19 publications

(14 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Still, due to cellulose swelling, most of the cellulose molecular chains are easily available for further processing, as already investigated during extrusion of lignocellulosic biomass with EmimAc/ DMSO. 40 As expected, crystallinity decreased with an increasing processing temperature and residence time, the latter caused by lower screw speeds. 40 In our samples, increasing processing temperature also led to a slightly better homogeneity regarding inclusions and general surface smoothness, mainly visible for the C40 samples (Figure S4).…”

Section: Optical Propertiessupporting

confidence: 64%

Cellulose blends from gel extrusion and compounding with polylactic acid

Müller

Fürtauer

Schmid

et al. 2022

J of Applied Polymer Sci

View full text Add to dashboard Cite

Cellulose, dissolved in ionic liquids (IL), can be used successfully in the processing of thermoplastics. To recover the ionic liquid while maintaining the thermoplastic properties, other spacers than IL might be introduced into the cellulose network. Such blend materials have been prepared before by solution blending as reported in the literature. In this study, the preparation and investigation of cellulose and polylactic acid (PLA) blends using an extrusion process with an ionic liquid and co‐solvent for intermediate compatibilization is reported. The obtained transparent films show a homogeneous morphology without phase separation. Thermal analysis showed no separated glass transition for PLA, and FTIR showed hydrogen bonding between cellulose and PLA chains. Thermal stability of the blends with a degradation onset around 270°C lies between regenerated cellulose and pure PLA. The blend tensile strength and elongation of ~40 MPa and 1.3%, respectively, were comparable to a multiphase composite containing twice the molecular weight of PLA. Generally, mechanical performance of the blends was strongly influenced by degradation reactions mainly caused by the ionic liquid used, as well as blend morphology. The study shows that transfer from solution to extrusion processing is generally possible to obtain novel cellulose blends.

show abstract

Section: Optical Propertiessupporting

confidence: 64%

Cellulose blends from gel extrusion and compounding with polylactic acid

Müller

Fürtauer

Schmid

et al. 2022

J of Applied Polymer Sci

View full text Add to dashboard Cite

show abstract

“…This finding was in accordance with the results of this study. To increase the efficiency of the extrusion, chemicals can be added which enhance the degradation of lignocellulose and thus improve the soluble sugar content 38–40 . Extrusion can also be followed by ultrasonic treatment for further solubilization of biomass fibers 35 …”

Section: Resultsmentioning

confidence: 99%

Enhanced enzymatic hydrolysis of corn stover using twin‐screw extrusion under mild conditions

Elalami

Aouine

Monlau³

et al. 2022

Biofuels Bioprod Bioref

View full text Add to dashboard Cite

This paper aims to investigate the effect of extrusion at high solid loading on corn stover (CS) properties and its enzymatic hydrolysis. This biomass was extruded under different screw speeds and different solid loadings and the impact of these parameters on the physicochemical properties was evaluated. It was found that lignocellulosic components were not significantly affected by the pretreatment, while the surface area increased with solid loading and rotation speed. Different enzyme cocktails were used for the enzymatic hydrolysis of extruded and untreated CS. Overall, mild twin‐extrusion enhanced the enzymatic hydrolysis of CS through an increase in glucose and xylose yields by 134–212% and 214–294%, respectively, when using Trichoderma longibrachiatum cellulase. The highest sugar content was obtained from CS extruded under 400 g total solids per liter and 200 rpm. The energy efficiency of the pretreatment was also assessed and was found to be maximal at 400 g total solids per liter and 200 rpm. © 2022 Society of Chemical Industry and John Wiley & Sons, Ltd.

show abstract

“…The increased removal of lignin from the cell wall of biomass by IL pretreatment endows the solid residue with good enzymatic sugar release properties, such as 95% enzymatic hydrolysis yield for wheat straw pretreated with cholinium argininate ([Ch][Arg]), 96 93.1% yield for wheat straw and 82.9% yield for Eucalyptus pretreated with [emim][HSO4], 97 81.7% yield for cornstalk pretreated with [Bmim]BF4/water, 98 and 99.0% for pussy willow pretreated with [EMIM]Ac/DMSO. 99 In addition, various co-solvents, such as glycol, imidazolium, and FeCl 2 , have also been proposed to be added to the IL system to improve the pretreatment efficiency to achieve satisfying enzymatic digestibility of biomass (over 90%). [100][101][102] Generally, lignin solubility in IL aqueous solution has been investigated in different pretreatment systems, and the results showed that HSP theory could be used to assess the IL content in the ILwater mixture, and maximum lignin solubility could be achieved at 70 wt% IL content in a dialkylimidazolium based IL system.…”

Section: Ionic Liquid Biphasic Pretreatment Systemmentioning

confidence: 99%