Qualitative and Quantitative Analysis of Lignins from Different Sources and Isolation Methods for an Application as a Biobased Chemical Resource and Polymeric Material

Khaldi-Hansen, Basma El; Schulze, Margit; Kamm, Birgit

doi:10.1007/978-3-319-41414-0_2

Cited by 11 publications

(7 citation statements)

References 55 publications

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“…Hemicellulose degradation also resulted intensification of other biomass components, which is observable from CO stretching vibrations at 1,694 cm −1 , aromatic skeletal vibration derived from lignin at 1,602 cm −1, guaiacyl unit of lignin at 1,266 cm −1. The presence of CO structure was also mentioned in the study of Fuertes and Sevilla . Moreover, the peak of cyclic COC, which indicates the presence of cellulose, is also detectable in hydrochar structure …”

Section: Resultsmentioning

confidence: 73%

“…Upon hydrothermal treatment, the moisture content and ash content of sawdust decreased. Decreased ash content is mainly explained by the dissolution of mineral matter at hydrothermal conditions . Not all the mineral matter dissolves in hydrothermal liquid.…”

Section: Resultsmentioning

confidence: 99%

“…Decreased ash content is mainly explained by the dissolution of mineral matter at hydrothermal conditions. 38,39 Not all the mineral matter dissolves in hydrothermal liquid. Kumar et al 22 showed that, ash content of switchgrass did not change dramatically while some of the ash forming elements such as K, Mg, P, and Na were found in the hydrothermal liquid due to their solubility at hydrothermal conditions.…”

Section: T Eamentioning

confidence: 99%

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Pyrolysis and combustion characteristics and kinetics of wood sawdust and wood sawdust hydrochar

Kabakcı

2019

Env Prog and Sustain Energy

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This study compares the pyrolysis and combustion characteristics with the kinetics of wood sawdust and its hydrochar. Wood sawdust hydrochar was obtained by the hydrothermal treatment of wood sawdust (biomass/water: 1 g/4 mL) at 220°C, where the residence time was set as 90 min. After hydrothermal carbonization, carbon content and heating value were both increased by 14%. Pyrolysis and combustion of wood sawdust and its hydrochar were performed by thermogravimetric analysis at 10, 20, 30, and 40°C/min. Kissinger–Akahira–Sunose (KAS) method, Friedman method, Flynn–Wall–Ozawa (FWO) method, and Kissinger method were used for analyzing the pyrolysis data. For combustion, only KAS and FWO methods were used to determine the kinetic parameters. As compared to wood sawdust pyrolysis, average activation energy of hydrochar pyrolysis was lower (150.36 kJ/mol by using KAS method, 153.05 kJ/mol by using FWO method). Based on mean activation energies, pyrolysis reaction of hydrochar was more favorable than its combustion. In combustion, average activation energy of hydrochar combustion reaction was higher; indicating that combustion of wood sawdust was more favorable.

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Section: Resultsmentioning

confidence: 73%

Section: Resultsmentioning

confidence: 99%

Section: T Eamentioning

confidence: 99%

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Pyrolysis and combustion characteristics and kinetics of wood sawdust and wood sawdust hydrochar

Kabakcı

2019

Env Prog and Sustain Energy

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“…The syringyl units are developed primarily by ether bonds within the lignin macromolecule. At temperature below 310 • C, the ether bonds between syringyl units are easier to be broken due to their low thermal stability [75]. The final stage is between 580 and 1000 • C. Degraded volatile products from lignin comprising of alcohols, aldehyde, and acids besides the formation of gaseous products were separated from this level.…”

Section: Thermogravimetric Analysis (Tga)mentioning

confidence: 99%

Fabrication, Modification, and Characterization of Lignin-Based Electrospun Fibers Derived from Distinctive Biomass Sources

Attia¹,

Abas²,

Nada

et al. 2021

Polymers

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From the environmental point of view, there is high demand for the preparation of polymeric materials for various applications from renewable and/or waste sources. New lignin-based spun fibers were produced, characterized, and probed for use in methylene blue (MB) dye removal in this study. The lignin was extracted from palm fronds (PF) and banana bunch (BB) feedstock using catalytic organosolv treatment. Different polymer concentrations of either a plasticized blend of renewable polymers such as polylactic acid/polyhydroxybutyrate blend (PLA-PHB-ATBC) or polyethylene terephthalate (PET) as a potential waste material were used as matrices to generate lignin-based fibers by the electrospinning technique. The samples with the best fiber morphologies were further modified after iodine handling to ameliorate and expedite the thermostabilization process. To investigate the adsorption of MB dye from aqueous solution, two approaches of fiber modification were utilized. First, electrospun fibers were carbonized at 500 °C with aim of generating lignin-based carbon fibers with a smooth appearance. The second method used an in situ oxidative chemical polymerization of m-toluidine monomer to modify electrospun fibers, which were then nominated by hybrid composites. SEM, TGA, FT-IR, BET, elemental analysis, and tensile measurements were employed to evaluate the composition, morphology, and characteristics of manufactured fibers. The hybrid composite formed from an OBBL/PET fiber mat has been shown to be a promising adsorbent material with a capacity of 9 mg/g for MB dye removal.

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“…The slope is related to activation energy Ea [43]. TGA was measured in temperature rang 25-700˚C, constant heating rate 50˚C/min at N2 resulted from degradation of propanoid side chains of lignin [44]. We Observe from LNPs curve increased (T i =202°C) value, that gives to LNPs higher thermal stability compared with lignin.…”

Section: Thermal Gravimetric Analysis(tga)mentioning

confidence: 99%

Study of Thermal Behavior and Anti-Breast Cancer Activity of Some New Lignin-Nanoparticle Networks Sustained with Triterpenoid Compound Isolated from Calotropis procera L. leaves

2019

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T HE AIM of the present study is to provide breast cancer antibiotic from compound extracted from a cheap and available local plant (Calotropis procera L.) and preparation new two interpenetrating polymer networks(IPNs) based on biopolymer product, nature (lignin nanoparticles LNPs) and manufactured as methacrylic acid (MAA) and 2-(Dimethylamino)ethyl methacrylate (DMAEMA) were identified and evaluated by IR, thermal analysis (TGA) and scanning electron microscopy(SEM) to carry the plant extract. The efficacy of all plant extract, LNPs, and IPNs for the extract was tested using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT assay) on the MCF-7 cell line for 72 h and different concentrations. We found that all models gave different lethal effect to the cells.

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Qualitative and Quantitative Analysis of Lignins from Different Sources and Isolation Methods for an Application as a Biobased Chemical Resource and Polymeric Material

Cited by 11 publications

References 55 publications

Pyrolysis and combustion characteristics and kinetics of wood sawdust and wood sawdust hydrochar

Pyrolysis and combustion characteristics and kinetics of wood sawdust and wood sawdust hydrochar

Fabrication, Modification, and Characterization of Lignin-Based Electrospun Fibers Derived from Distinctive Biomass Sources

Study of Thermal Behavior and Anti-Breast Cancer Activity of Some New Lignin-Nanoparticle Networks Sustained with Triterpenoid Compound Isolated from Calotropis procera L. leaves

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