Assessing the effect of protic ionic liquid pretreatment of
            <i>Pinus radiata</i>
            from different perspectives including solvent-water ratio

Haykır, Nazife Işık; Soysal, Kaan; Yağlikçi, Savaş; Gökçe, Yavuz

doi:10.1080/02773813.2021.1976797

Cited by 11 publications

(3 citation statements)

References 48 publications

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“…Further, the effective infiltration of [N11H(2OH)][LAC] also reduces cellulose crystallinity and significantly disrupts the cell wall network of PWB [ 24 ]. Thus, the current study agrees with the earlier reported morphologies of PIL-mediated biomass pretreatment [ 25 , 26 ].…”

Section: Resultssupporting

confidence: 93%

Efficient Lignin Fractionation from Scots Pine (Pinus sylvestris) Using Ammonium-Based Protic Ionic Liquid: Process Optimization and Characterization of Recovered Lignin

et al. 2022

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Lignin-based chemicals and biomaterials will be feasible alternatives to their fossil-fuel-based counterparts once their breakdown into constituents is economically viable. The existing commercial market for lignin remains limited due to its complex heterogenous structure and lack of extraction/depolymerization techniques. Hence, in the present study, a novel low-cost ammonium-based protic ionic liquid (PIL), 2-hydroxyethyl ammonium lactate [N11H(2OH)][LAC], is used for the selective fractionation and improved extraction of lignin from Scots pine (Pinus sylvestris) softwood biomass (PWB). The optimization of three process parameters, viz., the incubation time, temperature, and biomass:PIL (BM:PIL) ratio, was performed to determine the best pretreatment conditions for lignin extraction. Under the optimal pretreatment conditions (180 °C, 3 h, and 1:3 BM:PIL ratio), [N11H(2OH)][LAC] yielded 61% delignification with a lignin recovery of 56%; the cellulose content of the recovered pulp was approximately 45%. Further, the biochemical composition of the recovered lignin and pulp was determined and the recovered lignin was characterized using 1H–13C heteronuclear single quantum coherence (HSQC) nuclear magnetic resonance (NMR) spectroscopy, quantitative 31P NMR, gel permeation chromatography (GPC), attenuated total reflectance (ATF)–Fourier transform infrared spectroscopy (ATR-FTIR), and thermal gravimetric analysis (TGA) analysis. Our results reveal that [N11H(2OH)][LAC] is significantly involved in the cleavage of predominant β–O–4’ linkages for the generation of aromatic monomers followed by the in situ depolymerization of PWB lignin. The simultaneous extraction and depolymerization of PWB lignin favors the utilization of recalcitrant pine biomass as feedstock for biorefinery schemes.

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Section: Resultssupporting

confidence: 93%

Efficient Lignin Fractionation from Scots Pine (Pinus sylvestris) Using Ammonium-Based Protic Ionic Liquid: Process Optimization and Characterization of Recovered Lignin

et al. 2022

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“…Haykir et al studied the pine pretreatment with PIL-water (4 : 1) at 170 °C for 3 h, and only achieved 52% lignin removal. 28 Therefore, APW pretreatment showed excellent fractionation effect on different biomass.…”

Section: Mass Balance and Performance Comparison Of Apwmentioning

confidence: 97%

Mild organosolv pretreatment of sugarcane bagasse with acetone/phenoxyethanol/water for enhanced sugar production

Tan

Miao

et al. 2023

Green Chem.

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“…The use of PILs (proton ionic liquids) which can be recovered by distillation after the process seems to be a cost-effective method for extracting lignin from biomass [13]. Studies show that dissolving biomass in PIL loosens the bonds between xylan, cellulose, and lignin, allowing its extraction with this solvent [14,15]. This process could be widely used in the production of bioethanol from lignocellulosic feedstocks and provide an alternative to more expensive imidazolium ionic liquids [16].…”

Section: Introductionmentioning

confidence: 99%

Application of Proton Ionic Liquid in the Process of Obtaining Bioethanol from Hemp Stalks

Smuga-Kogut,

Walendzik,

Lewicka-Rataj

et al. 2024

Energies

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In this work, hemp (Cannabis sativa L.) stalks were pretreated with pyrrolidinium acetate [Pyrr][AC] to increase the availability of cellulose for cellulolytic enzymes and thus improve the production of 2G ethanol from reducing sugars. The process was carried out under different temperature and time conditions: The control sample was raw material and deionized water, and the second sample was kept at 21 °C for 24 h. The third sample was kept at 90 °C for 30 min, and the fourth sample was kept at the same temperature for 24 h. For each pretreatment, the extraction of lignin and hemicellulose was determined, as well as the change in biomass composition before and after pretreatment. The stalks of hemp seed contained 41.54% cellulose, 18.08% lignin and 28. 87% hemicellulose. [Pyrr][AC] used to dissolve seed hemp at 90 °C for 24 h was most effective in the extraction of this biopolymer, extracting 3.1% content. After enzymatic hydrolysis, the highest content of reducing sugars was found for samples of hemp stalks that were first pretreated with proton ionic liquid (PIL) and stirred at 90 °C for 24 h. On the other hand, the highest ethanol content (5.6 g/L) after fermentation and yeast viability (56.7%) after 72 h were obtained in samples pretreated at 90 °C and for 24 h.

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Assessing the effect of protic ionic liquid pretreatment of Pinus radiata from different perspectives including solvent-water ratio

Cited by 11 publications

References 48 publications

Efficient Lignin Fractionation from Scots Pine (Pinus sylvestris) Using Ammonium-Based Protic Ionic Liquid: Process Optimization and Characterization of Recovered Lignin

Efficient Lignin Fractionation from Scots Pine (Pinus sylvestris) Using Ammonium-Based Protic Ionic Liquid: Process Optimization and Characterization of Recovered Lignin

Mild organosolv pretreatment of sugarcane bagasse with acetone/phenoxyethanol/water for enhanced sugar production

Application of Proton Ionic Liquid in the Process of Obtaining Bioethanol from Hemp Stalks

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