Investigation on the thermal degradation behavior of enzymatic hydrolysis lignin with or without steam explosion treatment characterized by TG-FTIR and Py-GC/MS

Lu, Xinyu; Zhu, Xiaojun; Guo, Haoquan; Que, Han; Wang, Dandan; Liang, Dingxiang; He, Tao; Hu, Chengjuan; Xu, Chengyun; Gu, Xiaoli

doi:10.1007/s13399-020-00987-5

Cited by 16 publications

(9 citation statements)

References 67 publications

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“…This is due to the fact that lignin contains a high content of aromatic rings with different branches, so the decomposition profile occurs in a wider temperature range (200–500 °C) than for cellulose and the hemicellulose components of biomass. Additionally, the weight loss observed below 110 °C corresponds to the moisture bonded to the hydroxyl and carboxyl groups of the fibers [ 14 , 36 ].…”

Section: Resultsmentioning

confidence: 99%

“…The curve corresponding to biomass waste showed a broad and multi loss-weigh profiles due to its lignocellulosic composition. The decomposition process depends on the content of these main components, so the degradation profile results from the degradation of cellulose, complemented by a shoulder at low temperature, associated with hemicellulose degradation, and a tail at high temperature corresponding to lignin decomposition [ 14 , 36 , 37 ]. The removal of the hemicellulose from the palm waste promoted by the chemical treatment is confirmed by the disappearance of the shoulder/peak observed at 281 °C in the DTG curve.…”

Section: Resultsmentioning

confidence: 99%

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Effect of Processing Time of Steam-Explosion for the Extraction of Cellulose Fibers from Phoenix canariensis Palm Leaves as Potential Renewable Feedstock for Materials

Pérez-Aguilar¹,

Ruzafa-Silvestre²,

Arán-Aı́s³

2022

Polymers

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This paper briefly discusses the utilization of pruning wastes as a lignocellulosic source of cellulose fibers, which could be of potential use in the development of valuable materials such as sustainable textiles and fillers for footwear components including uppers and soles. Phoenix canariensis palm leaves, one of the most common plants found in the local environment of the Alicante region (Spain), was used as a biomass raw material. Determining appropriate processing parameters and their desired range of maximum cellulose extraction states is key to improving yields. Therefore, this study aimed at determining the effect of processing conditions on cellulose extraction by optimizing the hydrothermal process, as a part of overall combined processes involving several steps. Specifically, the time of the steam-explosion stage was varied between 15 and 33 min in order to maximize the cellulose extraction yield. The composition of both the extracted fibers and the resulting by-product solutions generated during the different steps were determined by FTIR and TGA in order to analyze the effectiveness of removing hemicellulose, lignin and extractives as well as the removed substances at each stage for their further valorization. Additionally, the morphology of cellulosic fibers was evaluated by SEM and their crystallinity by XRD. Crystalline cellulose fibers were successfully extracted from pruning biomass wastes, achieving more efficient removal of hemicellulose and lignin when the hydrothermal process was assessed over 25–33 min. This resulted in finer and smoother fibers, but the crystallinity of α-cellulose decreased as the time of steam-explosion increased to 33 min. The characterization of waste solutions generated after the different extraction steps confirmed that the most effective treatments to remove lignin and hemicellulose from the cell wall are alkaline pretreatment and a hydrothermal process.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Effect of Processing Time of Steam-Explosion for the Extraction of Cellulose Fibers from Phoenix canariensis Palm Leaves as Potential Renewable Feedstock for Materials

Pérez-Aguilar¹,

Ruzafa-Silvestre²,

Arán-Aı́s³

2022

Polymers

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“…This is because the hydroxyl groups on the surface of lignin were replaced by hydrophobic groups, the adsorption force to water molecules was reduced, and the surface water content was correspondingly reduced. 38 Due to the fact that silane chains have stronger thermal stability than hydroxyl groups, 39,40 pyrolysis of the modified lignin started at around 260 °C. The carbonization stage started after 540 °C due to the decomposition of silane chains grafted on the surface of the lignin.…”

Section: Ft-ir Spectroscopy Analysismentioning

confidence: 99%

Preparation and Properties of Modified Lignin/Triphenol Epoxy Composite Coatings for Superhydrophobicity and Corrosion Protection

Wei,

Liang,

et al. 2024

ACS Appl. Polym. Mater.

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Coatings are widely used in all aspects of life due to their easy and efficient functional properties. In today's pursuit of green living, people are increasingly looking for green, biosafe materials, so there is a trend to develop simple and economical methods of coating materials using natural polymers. Lignin, as a natural renewable aromatic polymer, has a unique chemical structure that is ideal for the preparation of UV-resistant and superhydrophobic coatings. In this study, a triphenol epoxy resin (PTEP) was synthesized and prepared using vanillin and guaiacol and then using octadecyltrichlorosilane to chemically modify the lignin to prepare modified lignin (OSL) with superhydrophobic properties. Finally, lignin-based superhydrophobic functional coatings (PTEP-OSL and PTEP-OSL/ZnO) were prepared using superhydrophobic modified lignin, PTEP, and nano-ZnO particles. Both the PTEP-OSL coating and PTEP-OSL/ZnO coating have good superhydrophobic properties, and the maximum contact angles can reach 160°and 159°. The superhydrophobic properties of lignin-based coatings are mainly attributed to the high surface roughness they construct and the low surface energy provided by the modified lignin. And compared with the PTEP-OSL coating, the PTEP-OSL/ZnO coating doped with nano-ZnO particles has a smoother surface and good anticorrosion performance. Electrochemical results show that the PTEP-OSL/ZnO coating has a higher impedance (Z = 5.56 × 10 7 Ω cm 2 ) and higher phase angle value (θ = 80.24°). In addition, both PTEP-OSL and PTEP-OSL/ZnO coatings exhibit good UV shielding properties, which will further expand their practical applications. The lignin-based polymer coating has the advantages of being low-cost, green, and renewable, providing a simple route to value-added utilization of lignin.

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“…Lignin is one of the three main components in lignocellulosic biomass, combined with cellulose and hemicellulose via hydrogen and ester bonds [ 117 – 119 ]. So far, large quantities of lignin have been produced from industrial and agricultural activities, and pyrolysis technology has been considered as an effective method for its high-efficiency conversion [ 120 – 122 ]. Unfortunately, the presence of cellulose and hemicellulose would affect the pyrolytic behavior of lignin owing to a series of coupling interactions occurring [ 123 – 125 ], hence leading to a more intangible pyrolysis process.…”

Section: Introductionmentioning

confidence: 99%

A review on lignin pyrolysis: pyrolytic behavior, mechanism, and relevant upgrading for improving process efficiency

2022

Biotechnol Biofuels

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Lignin is a promising alternative to traditional fossil resources for producing biofuels due to its aromaticity and renewability. Pyrolysis is an efficient technology to convert lignin to valuable chemicals, which is beneficial for improving lignin valorization. In this review, pyrolytic behaviors of various lignin were included, as well as the pyrolytic mechanism consisting of initial, primary, and charring stages were also introduced. Several parallel reactions, such as demethoxylation, demethylation, decarboxylation, and decarbonylation of lignin side chains to form light gases, major lignin structure decomposition to generate phenolic compounds, and polymerization of active lignin intermediates to yield char, can be observed through the whole pyrolysis process. Several parameters, such as pyrolytic temperature, time, lignin type, and functional groups (hydroxyl, methoxy), were also investigated to figure out their effects on lignin pyrolysis. On the other hand, zeolite-driven lignin catalytic pyrolysis and lignin co-pyrolysis with other hydrogen-rich co-feedings were also introduced for improving process efficiency to produce more aromatic hydrocarbons (AHs). During the pyrolysis process, phenolic compounds and/or AHs can be produced, showing promising applications in biochemical intermediates and biofuel additives. Finally, some challenges and future perspectives for lignin pyrolysis have been discussed.

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Investigation on the thermal degradation behavior of enzymatic hydrolysis lignin with or without steam explosion treatment characterized by TG-FTIR and Py-GC/MS

Cited by 16 publications

References 67 publications

Effect of Processing Time of Steam-Explosion for the Extraction of Cellulose Fibers from Phoenix canariensis Palm Leaves as Potential Renewable Feedstock for Materials

Effect of Processing Time of Steam-Explosion for the Extraction of Cellulose Fibers from Phoenix canariensis Palm Leaves as Potential Renewable Feedstock for Materials

Preparation and Properties of Modified Lignin/Triphenol Epoxy Composite Coatings for Superhydrophobicity and Corrosion Protection

A review on lignin pyrolysis: pyrolytic behavior, mechanism, and relevant upgrading for improving process efficiency

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