Chemical composition analysis and structural features of banana rachis lignin extracted by two organosolv methods

Deumaga, Mathias Florian Tiappi; Villani, Nicolas; Aguedo, Mário; Jacquet, Nicolas; Thomas, Happi Guy; Gerin, Patrick A.; Deleu, Magali; Richel, Aurore

doi:10.1016/j.indcrop.2019.02.022

Cited by 60 publications

(23 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The results were averaged of five measurements. The remaining lignin is measured using the Klason method [31]: the dissolution of the fiber was carried out in a sulfuric acid solution (72%) for 1 h. Then, this solution was diluted to 3% and heated to reflux for 4 h [32]. Afterwards, the solution was filtered and the resulting lignin residue was dried in an oven at 100℃.…”

Section: Methodsmentioning

confidence: 99%

Extraction and characterization of palm fibers and their use to produce wool- and polyester-blended nonwovens

Sajid

Azmami

Ahmadi

et al. 2019

Journal of Industrial Textiles

View full text Add to dashboard Cite

The aim of this work is the production of new nonwovens materials based on wool, polyester and palm fibers ( Washingtonia). The extraction of palm fibers was achieved by the combination of alkaline and bleaching treatments. Chemical composition, mechanical and physical properties of the extracted fibers were first determined. Then, two types of blended nonwovens based on Palm/Wool (P/W) and Palm/Polyester (P/PES) mixtures were produced using the needling technique. The physical and structural properties of produced nonwovens were studied such as surface density, tensile strength, porosity and thermal properties. The results showed that the porosity lies between 83.81% and 86.93% for (P/W) mixtures and between 78.01% and 86.93% for (P/PES) mixtures. The air permeability was found to be between 61.56 m3.m−2.min−1 and 129.01 m3.m−2.min−1 for P/W blend nonwovens and between 22.75 m3.m−2.min−1 and 129.01 m3.m−2.min−1 for P/PES blend ones. The thermal conductivity varies between 36.45 mW/m.K and 43.88 mW/m.K for P/W nonwovens and between 36.45 mW/m.K and 47.70 mW/m.K for P/PES nonwovens. Moreover, the tensile strength of blended nonwovens is found to be higher than that of non-blended ones.

show abstract

Section: Methodsmentioning

confidence: 99%

Extraction and characterization of palm fibers and their use to produce wool- and polyester-blended nonwovens

Sajid

Azmami

Ahmadi

et al. 2019

Journal of Industrial Textiles

View full text Add to dashboard Cite

show abstract

“…Similarly, bands occurring from 1031 to 1034 cm −1 were observed for aromatic C-H groups of syringyl and G units. In addition, signals for C-H and CH 3 groups of G units were at 816 and 830 cm −1 , respectively [13][14][15].…”

Section: Characterization Of Lignin Fraction By Fourier Transform Inf...mentioning

confidence: 97%

Characterization of Eucalyptus Lignin Fractionation from a MIBK-Based Solvothermal Process

et al. 2022

View full text Add to dashboard Cite

In this study, the effects of sulfuric acid on cellulose yield, lignin removal, and lignin recovery in solvothermal fractionation of eucalyptus (EC) were studied. An acid concentration of 0.04 M sulfuric acid (H2SO4), temperature of 180 °C and residence time of 30 min resulted in maximum lignin removal from the solid phase, at 87.7 %. Lignin recovery in the organic phase under optimum conditions was 84.6 %. It should be noted that H2SO4 was the best catalyst in the optimal solvothermal process, and it increased the cellulose yield to 95.2 % in the solid phase. Additionally, the physicochemical and structural properties of the extracted lignin were analyzed using FTIR, TGA, elemental analysis, GPC, and Py-GCMS methods. Thermal degradation analysis showed that recovered lignin is primarily composed of syringyl, guaiacyl and p-hydroxyphenyl units cross-linked by C–C, inter-unit α-O-4, β-O-4 linkages. The weight average molecular weight (Mw) analysis of recovered lignin demonstrated a low molecular weight for recovered lignin (2.19 g/mol). However, the main phenolic derivatives in the extracted lignin obtained from EC were S-units (i.e., syringol, 4-methylsyringol, 4-vinylsyringol). In addition, G-units (4-vinylguaiacol, 4-methylguaiacol, phenol, 2-methylphenol, and 4-methylphenol) were obtained after release from H-units. Py-GCMS analysis showed the predominance of G-units (32.8 %) over S-units (57.4 %). This work demonstrated the potential of fractionated lignin in the production of valuable chemicals in biorefineries. HIGHLIGHTS Eucalyptus was fractionated with solvothermal process with different conditions The maximum lignin removal of 87.7 % was achieved in the presence of catalyst of 0.04 M Organosolv fractionation enabled an extensive and selective delignification The structural changes of lignin were characterized comprehensively GRAPHICAL ABSTRACT

show abstract

“…In delignification process, both raw materials and the solution were heated at a temperature of 121 o C for 30 minutes, after it was filtered and washed with water to a neutral pH. The resulting residue was weighed and then dried at 105 o C for 1 hour [18][19]. Fruit bunches are washed and dried for two days to remove bound water content.…”

Section: Pre-treatmentmentioning

confidence: 99%

Characterization Biofuel from Empty Fruit Bunch through Thermal Cracking

2022

View full text Add to dashboard Cite

Empty Fruit Bunches (EFB) are oil palm waste that has the potential as a source of bioenergy because it contains lignocellulose (cellulose, hemicellulose, and lignin) so that it can be converted into biofuel through thermal cracking, adsorption, and distillation processes. Thermal cracking is the decomposition of the chemical content of biomass by utilizing heat without a mixture of oxygen at a temperature of 200oC–600oC. This study aims to obtain the characteristics of the raw material of EFB in the form of proximate, ultimate, lignin, and biofuel produced. The research was conducted using a thermal cracking reactor designed to control the temperature at 300oC, 350oC, 400oC, and 450oC. The results showed that the raw material characteristics of EFB from proximate were 13.66% water content, 8.74% ash content, 58.66% volatile matter and 18.90% fixed carbon. This water content is relatively high. This is because the drying process on the material has not run perfectly. The ultimate result showed that the EFB had a C content of 54.45%, H content of 5.00%, and O content of 16.27%. The atomic ratio obtained from the ultimate analysis can indicate the amount of calorific value that can be used for certain fuels. The smaller the atomic ratio value contained, the more significant the calorific value contained in a particular fuel. Klason method was carried out to decrease the level of lignin through 4 stages; the lignin content without delignification was resulting into 24.87%, the addition of aquadest was resulting into18.71%, the addition of 5% HCl resulting into 15.34%, and 10% HCl resulting into 14.49%. Delignification of 10% HCl is the pretreatment process before the thermal cracking. The thermal cracking process forms steam; the steam is then condensed to obtain bio-oil. The formed bio-oil was kept to separate the oil from tar. In order to obtain good biofuel quality, adsorption is carried out with zeolite adsorbent, which has been activated with HCL. A comparison of the physical properties of bio-oil before and after adsorption shows a color difference from brownish black to the adsorbed bio-oil, which is distilled to separate the heavy and light fractions. The temperature of 450oC at thermal cracking is close to optimum; when the temperature is increased, the cracking process will be more straightforward and occur optimally. The biofuel produced in this study was tested for its characteristics such as, density (927-1086.68 Kg/m3), kinematic viscosity (1.17-1.43 mm2/s), and flash point (66.00-70, 23oC). The biofuel product produced is dominated by C5-C15 compounds (45.07%) according to the results of GC-MS analysis.

show abstract

Chemical composition analysis and structural features of banana rachis lignin extracted by two organosolv methods

Cited by 60 publications

References 19 publications

Extraction and characterization of palm fibers and their use to produce wool- and polyester-blended nonwovens

Extraction and characterization of palm fibers and their use to produce wool- and polyester-blended nonwovens

Characterization of Eucalyptus Lignin Fractionation from a MIBK-Based Solvothermal Process

Characterization Biofuel from Empty Fruit Bunch through Thermal Cracking

Contact Info

Product

Resources

About