Separation and recovery of cellulose and lignin using ionic liquids: a process for recovery from paper‐based waste

Lateef, Huma; Grimes, Sue; Kewcharoenwong, Pajaree; Feinberg, Benjamin J.

doi:10.1002/jctb.2251

Cited by 103 publications

(74 citation statements)

References 36 publications

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“…5. The lignin molecule contains various functional groups such as O-H, C-H, C-O, etc., for which bond vibrations are shown in Table 3 [25]. Bamboo lignin contains high proportion of syringyl residues which can be observed by an intense single peak at 832 cm −1 and more intense peaks at 1,128 and 1,320 cm −1 in the FTIR spectrum B [26].…”

Section: Resultsmentioning

confidence: 98%

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Dissolution and Delignification of Bamboo Biomass Using Amino Acid-Based Ionic Liquid

Muhammad¹,

Man²,

Bustam³

et al. 2011

Appl Biochem Biotechnol

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In the present work, the dissolution of bamboo biomass was tested using a number of ionic liquids synthesized in laboratory. It was observed that one of the synthesized amino acid-based ionic liquids, namely 1-ethyl-3-methylimidazolium glycinate, was capable of dissolving the biomass completely. The dissolved biomass was then regenerated using a reconstitute solvent (acetone/water) and was characterized using Fourier transform infrared spectroscopy, X-ray diffraction, and scanning electron microscopy. The results were compared to preconditioned bamboo biomass. The regenerated biomass was found to have a more homogenous macrostructure, which indicates that the crystalline form and structure of its cellulose has changed from type Ι to type ΙΙ during the dissolution and regeneration process.

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Section: Resultsmentioning

confidence: 98%

“…This absence of lignin characteristic peaks confirmed the delignification of the regenerated biomass. The peaks which appear at around 1,328, 1,159, 1,037, 1,056, and 896 cm −1 are mainly attributed to the carbohydrates which are present in both spectra [24,25].…”

Section: Resultsmentioning

confidence: 99%

Dissolution and Delignification of Bamboo Biomass Using Amino Acid-Based Ionic Liquid

Muhammad¹,

Man²,

Bustam³

et al. 2011

Appl Biochem Biotechnol

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“…The very high solvating properties of RTILs have been exploited in the dissolution of cellulose (Kosan et al, 2008;Swatloski et al, 2002), lignin (Lateef et al, 2009), and even whole wood (Fort et al, 2007;Honglu and Tiejun, 2006;Kilpelainen et al, 2007), and such solvating power has led to a number of studies where RTILs have been considered for biomass pretreatment. Herein, we provide an overview of recent scientific and technological advances on the use of RTILs in lignocellulosic biomass pretreatment, including their critical unique solvating power.…”

Section: Introductionmentioning

confidence: 99%

Room temperature ionic liquids as emerging solvents for the pretreatment of lignocellulosic biomass

Mora-Pale

Meli

Doherty

et al. 2011

Biotech & Bioengineering

362

225

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Room temperature ionic liquids (RTILs) are emerging as attractive and green solvents for lignocellulosic biomass pretreatment. The unique solvating properties of RTILs foster the disruption of the 3D network structure of lignin, cellulose, and hemicellulose, which allows high yields of fermentable sugars to be produced in subsequent enzymatic hydrolysis. In the current review, we summarize the physicochemical properties of RTILs that make them effective solvents for lignocellulose pretreatment including mechanisms of interaction between lignocellulosic biomass subcomponents and RTILs. We also highlight several recent strategies that exploit RTILs and generate high yields of fermentable sugars suitable for downstream biofuel production, and address new opportunities for use of lignocellulosic components, including lignin. Finally, we address some of the challenges that remain before large-scale use of RTILs may be achieved.

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“…The interaction of ILs with terminal hydroxyl groups of lignin, resulting disruption of lignin-cellulose network of biomass, thus increase the release of the regenerated lignin. Lateef et al (2009) also reported the disruption of the internal network within lignin molecule would affect the dissolution of lignin. Although, chloride anion showed good lignin extraction, but it has high liquid viscosity and high melting temperature compared to acetate anion.…”

Section: Effect Of the Cations And Anions In The Ionic Liquids On Thementioning

confidence: 99%

Lignin Extraction from Coconut Shell Using Aprotic Ionic Liquids

2017

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Coconut shell, a natural biopolymer, is available in high amounts as waste in many countries. It could potentially be a crucial renewable source of raw materials for the carbon fiber industry. In this study, a series of aprotic ionic liquids, [Bmim] Cl. The recyclability of the ionic liquids during the dissolution process (up to four times) was also scrutinized. The structure and properties of the untreated coconut shell and regenerated lignin were characterized by Fourier transform infra-red (FTIR) spectroscopy, thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), X-ray diffraction (XRD) analysis, and proton nuclear magnetic resonance ( 1 H NMR).

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Separation and recovery of cellulose and lignin using ionic liquids: a process for recovery from paper‐based waste

Cited by 103 publications

References 36 publications

Dissolution and Delignification of Bamboo Biomass Using Amino Acid-Based Ionic Liquid

Dissolution and Delignification of Bamboo Biomass Using Amino Acid-Based Ionic Liquid

Room temperature ionic liquids as emerging solvents for the pretreatment of lignocellulosic biomass

Lignin Extraction from Coconut Shell Using Aprotic Ionic Liquids

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